Heat Wave Info From The NWS

August 25, 2011
Monthly/Daily Climate Records and Normals for Oklahoma City, OK

Heat Wave and Summer Temperature Data
for Oklahoma City, OK

How does the summer of 2011 compare to other years with hot summers such as 1934, 1936, 1943, 1954, 1980, 2000, and 2006 for Oklahoma City? Please review the data tables below. Heat wave information for Wichita Falls, TX is available here.

Oklahoma City Summer Temperature and Precipitation Records

Hottest Summers
All-time Highest Temperatures
for Oklahoma City, OK
Rank Year Avg Temp Rank Temperature Date
1 (tie) 1980 85.9 1 113 August 11, 1936
1934 85.9 2 112 August 10, 1936
3 1936 85.4 3 (tie) 110 August 6, 2011
4 1998 84.7 110 August 5, 2011
5 1943 84.2 110 July 9, 2011
6 1954 83.7 110 July 6, 1996
7 1918 83.2 110 August 2, 1980
8 1937 83.0 110 August 12, 1936
9 1952 82.5 9 (tie) 109 August 3, 2011
10 1925 82.3 109 August 2, 2011
109 July 29, 1986
109 August 9, 1936
109 July 19, 1936
Number of Consecutive Days ≥ 110 Degrees (Top 10 Streaks) Number of Days ≥ 110 Degrees in a Calendar Year (Top 10 Years)
Rank Dates Number Rank Year Number
1 August 10-21, 1936 3 1 (tie) 2011
(thru 8/24/2011)
2 August 5-6, 2011 2 1936 3
3 July 9, 2011 1 3 (tie) 1996 1
4 July 6, 1996 1 1980 1
5 July 2, 1980 1
Number of Consecutive Days ≥ 105 Degrees (Top 10 Streaks) Number of Days ≥ 105 Degrees in a Calendar Year (Top 10 Years)
Rank Dates Number Rank Year Number
1 July 31-August 6, 2011 7 1 2011
(thru 8/24/2011)
2 August 8-13, 1936 6 2 1980 17
3 July 17-21, 2006 5 3 1998 14
4 July 29-August 2, 1980 5 4 1936 12
5 September 1-4, 2000 4 5 2006 9
6 July 23-26, 1998 4 6 1947 8
7 July 4-7, 1996 4 7 1964 7
8 July 27-30, 1986 4 8 1978 6
9 July 16-19, 1980 4 9 1954 6
10 August 14-17, 1956 4 10 2000* 5
Number of Consecutive Days ≥ 100 Degrees (Top 10 Streaks) Number of Days ≥ 100 Degrees in a Calendar Year (Top 10 Years)
Rank Dates Number Rank Year Number
1 August 4-25, 1936 22 1 2011
(thru 8/24/2011)
2 July 1-19, 1966 19 2 1980 50
3 August 19-September 4, 2000 17  3 1934 45
4 (tie) July 18-August 2, 1998 16 4 1936 43
August 3-18, 1956 16 5 1954 41
6 (tie) July 7-20, 1980 14 6 1998 40
August 1-14, 1937 14 7 2006 38
8 June 29-July 10, 2011 13 8 1978 35
9 (tie) July 26-August 6, 2011 12 9 2000 32
July 30-August 10, 2006 12 10 (tie) 1943 28
1918 28

Winds and Fire Danger

April 3, 2011

Through noon…south through southwest winds will increase into the 25 to 35 mph range as a surface low deepens to the east of the Rocky Mountains. Wildfire potential will rapidly increase beginning in northwest Oklahoma in association with an eastward moving dry line. Temperatures will warm from the lower 70s into the low to mid 80s area wide. By afternoon…frequent gusts above 40 mph are expected. High temperatures in the 90s along with dry air covering much of western Oklahoma and western North Texas will result in extreme wildfire potential. Even where low level moisture remains in place to the east of the dry line…warm temperatures and strong winds will keep wildfire potential very high.
Wind Advisory in effect until 1 PM CDT Monday…

produced by Nowcast

Spring Weather Again

March 31, 2011

It’s that time of year when you can’t bring your spring clothes out as you must also have winter clothes available!  We have been on a roller coaster ride of temperatures since Spring has begun.  One day you need a coat and the next you are sporting shorts.  This week weather will be much more enjoyable.  Following is what we are expecting.   The unfortunate side of this weather is our high fire danger as we have been in a drought situation, with red flag alerts or burn bans in place all year.

Thursday, 31
Partly Cloudy
70 | 40° F
Partly Cloudy
Friday, 1
77 | 47° F
Saturday, 2
Partly Cloudy
74 | 59° F
Partly Cloudy
Sunday, 3
Partly Cloudy
86 | 61° F
Partly Cloudy
Monday, 4 
Chance of a Thunderstorm
70 | 34° F
Chance of T-storms

Severe Thunderstorm Watch

March 19, 2011

Severe Thunderstorm Watch 51 remains in effect until 400 PM CDT

. Oklahoma counties included are

Alfalfa Blaine Craig
creek Custer Delaware
Dewey Garfield Grant
Kay Kingfisher Logan
major Mayes Noble
Nowata Osage Ottawa
Pawnee Payne Rogers
Tulsa Wagoner Washington

Online Weather School

December 15, 2009

The following article was found under the NWS weather link.   It states you are free to use the material.   I hope you can benefit from the information.

Welcome to JetStream, the National Weather Service Online Weather School. This site is designed to help educators, emergency managers, or anyone interested in learning about weather and weather safety.

The information contained in JetStream is arranged by subject; beginning with global and large scale weather patterns followed by lessons on air masses, wind patterns, cloud formations, thunderstorms, lightning, hail, damaging winds, tornados, tropical storms, cyclones and flooding. Interspersed in JetStream are “Learning Lessons” which can be used to enhance the educational experience.

You are free to use the materials in any manner you wish. We welcome your feedback on this project. Your input will greatly assist others in teaching the “hows” and “whys” of weather. Not sure where to begin? Click to see all topics in JetStream in the Topic Matrix. Contact Us:

Steven Cooper Steven.Cooper@noaa.gov
Deputy Regional Director, NWS Southern Region Headquarters, Fort Worth, Texas

Dennis Cain Dennis.Cain@noaa.gov
a.k.a. “Professor Weather”, NWS Fort Worth, Texas

High Fire Danger This Week ** ** Severe weather possible over the weekend **

March 3, 2009

Models have underestimated the depth and magnitude of cold air which invaded this weekend.  Only the ADONIS model seems to have a good grip on things and have followed it closely through Tuesday.  Just so happens I did not have to change the previous forecast for Tuesday either!

With light winds and cold air I am going 10s tonight from OKC north and east.  With dew points in the 10s there should be a nice recovery as south-southeast winds kick in Monday afternoon.  An upper ridge centered in the desert southwest will cause high clouds to ride up and over from the mountains, overspreading OK for several days to come.

It appears the ridge will scoot east right into TX for Wednesday, allowing us to switch from Northwest flow back to Southwest flow starting on Thursday.  I’m thinking when we get a more southwest flow we will get thicker masses of high clouds more often, and I have trended more cloudy on Thursday/Friday as a result.  In addition, gulf moisture will begin working into the state on Tuesday, with 50 degree dew points by Wednesday evening across the eastern half of the state.  This should allow for more mid and low clouds later in the week.

A dry line will push into western OK on Wednesday.  The DGEX wants to hold the dry line near the TX-OK border for a few days while the ECMWF and GFS push it clear into central OK.  GFS grided temps from IPS Meteostar have consistently called for a high of 87 on Thursday, and I’m buying into it.  The record high temperature for OKC is 91 back in 1991 which is unusually high for this period.  Parts of western OK may make the lower 90s.

This is where the forecast gets to be real fun.  ECMWF, DGEX and GFS are offering different solutions from run to run on what will happen.  ECMWF is now calling for a frontal passage
Friday morning, where as every run (12z, 18z, 0z) GFS had a typical continued south fetch with a warm front across Kansas, connecting to a lee side low.  Both the ECMWF and GFS 12z and 18z didn’t have any upper support until Saturday, and the main lobe passes north.  This is a change from yesterday where the GFS wanted to bring a vortmax right over Oklahoma on Sunday, causing severe weather.  Well guess what, the 0Z run comes in and has the vort max arriving Sunday again.  I’m starting to think we might have severe weather Saturday or Sunday.

The GFS, and to some extent the DGEX, have wanted to be more progressive with lows coming out of the western US, while the 0z/12z ECMWF wants to cut the low off and leave it hanging back in the eastern Pacific, a pattern we have seen numerous times this winter and may be more believable.  However, due to it’s change in the pattern from yesterday, I have tossed it’s solution out.  DGEX has a more open and wider trough while GFS has a much tighter, progressive trough.  0Z GFS picks the low up on Friday off the coast of California, and brings it east.

There is major disagreement between not only the ECMWF, but run-to-run of the GFS.  18Z had one surface low pulling out with another setting up right behind it with storms Saturday and Sunday.  New 0Z is similar.  Old 12Z had Sunday in the 60s behind a cold front.  GFS gridded temps don’t agree with MOS.  12z MOS had 60s Saturday and Sunday, gridded temps have near 80 on Saturday, with total disagreement on Sunday.  12Z had 55 Sunday, 18Z had 79 (in line with the second low winding up).   I had 84 for a high on Sunday and dropped it to 65!!  It may be more like 84 if the 0z GFS is correct.  Who knows!!!  I probably should have played the middle and gone with 72 which I almost did.  I find it hard to believe the front wouldn’t be through by Sunday though.  I can’t wait for the 0Z GFS MOS.

OKC 19/56 36/68 47/78 52/87 50/78 54/80 44/65 43/53 28/56 34/65
Wind near 20 mph: Tuesday, Thursday, Saturday.
Pops: 20% Saturday. (maybe 20% Sunday?)
Cloud cover: AAAEEBBBUB

Thanks to Putnam Reiter for a similar discussion.

more at www.okcfox.com


Personal Observations and Funny Story

May 27, 2008

I was up rather late. Previous to the storm, I was surfing traffic exchanges and suddenly got a bad headache.  At the time, I thought that’s strange, it wasn’t there a minute ago.  Then my legs started aching.  My headache was getting worse.   I hear thunder and begin seeing a great lightning show.  That explains the headache. 

Now here is the funny part.  I decide to stand inside the storm door, video taping the lightning with one hand and holding the door open with the other as the lightning was at a distance.  There was some good CG.  Suddenly, I caught a glimpse of movement coming towards me.  My biggest fear, the fuzzy black spider or any other spider to be exact, is swinging his web right towards my face.   I closed the door quickly, trapping him inside.  Grabbing a tennis shoe, I attempted to chase him down.  After hitting him a couple times, he dropped to the floor either on my black throw rug, escaped through a small crack at the bottom of the door or is in the house lurking around.  Needless to say, that ended my video of the storm. 

The outflow boundary also hit at that point. Previous to the rain, my husband retrieved the lawn chair from the deck and the outside welcome mat took cover beside the deck.  Shortly thereafter, the high winds and heavy rain hit.  The wind was whipping the rain in all directions.  The smoker took flight and landed in 3 different areas of my front lawn.  The storm moved rapidly out of my area and things began to settle down. I continued to post in the aboutmidwestweather blog as it moved on through the city and points beyond.  Bedtime finally arrived at approximately 4:30 AM. 

We are under a slight risk of severe storms again today.  It begins again!

OU To Purchase First Of Its Kind Radar

May 9, 2008

University of Oklahoma to Purchase Radar – First of Its Kind in United States

NORMAN, Okla. – A new weather radar – the first of its kind in the United States – is being constructed and located at the University of Oklahoma to enhance education, training, research and development and encourage future innovations. 

“The new radar will contribute tremendous potential to the meteorological community for development of weather-related information services that will benefit from co-location with the core weather radar programs on OU’s Research Campus,” said Lee Williams, OU vice president for research.  “Together they will create an environment with endless potential for the university, federal, state and private-sector entities,” he said.

An agreement between OU and Enterprise Electronics Corp. will initiate construction of the new, C-band, high-resolution, dual polarization radar, which is expected to be operational by late 2008.

This radar will further OU’s vision for its weather radar enterprise, which is to further the development of OU radar meteorology so that radar-derived information can benefit decisions about  the atmospheric and hydrologic environment worldwide, Williams said

The new radar will serve as a research and development testbed for the Atmospheric Radar Research Center, an interdisciplinary university center engaged in collaborative research to define the next generation of weather radar sensors.  The center offers an exceptional radar education for OU students based on a foundation of combining meteorology and engineering expertise and training from OU’s colleges of Atmospheric and Geographic Sciences, and Engineering.  With the acquisition of the new radar, students and researchers will be able to perform a variety of activities, such as testing new and enhanced algorithms and developing unique hardware designs.

“The addition of this radar is invaluable to the Atmospheric Radar Research Center and radar meteorology as a whole at OU,” said the center’s director, Robert Palmer. “The radar will help us collaborate even more with private weather companies and, in turn, will help continue to foster research and development between academia and the private sector.”

EEC will design and install the radar.  A wholly owned subsidiary of Weather Services International, EEC is the largest manufacturer of commercial weather radars, with systems operations across the globe from Algeria to Zaire. 

About EEC

Enterprise Electronics Corp., a wholly owned subsidiary of WSI, is recognized as the world leader in the meteorological radar field. Since its inception in 1971, the company has designed, manufactured and installed more than 900 radar systems worldwide. EEC developed the world’s first commercial Doppler weather radar system in 1981. The corporation’s range of radar systems is the product of years of experience, superior engineering and a top-ranked quality control process. EEC’s 53,000-square-foot facility is located in Enterprise, Ala.


About WSI Corp.

WSI Corp. is the world’s leading provider of weather-driven business solutions for professionals in the media, aviation and energy markets. For more than 30 years, WSI has focused on predicting, detecting and visualizing disruptive weather – from the severe weather that makes headlines a few weeks each year to the more subtle weather changes that affect the business operations and profits of its clients each day. WSI is headquartered in Andover, Mass., and is a wholly owned subsidiary of Landmark Communications.


On the Web:

University of Oklahoma                                                                                www.ou.edu

College of Atmospheric and Geographic Sciences                             www.ags.ou.edu

Atmospheric Radar Research Center                                                       arrc.ou.edu

University Research Campus                                                                      urc.ou.edu

WSI                                                                                                                        www.wsi.com

Enterprise Electronics Corporation                                                           www.eecradar.com


Tornadoes Overhead

May 8, 2008

Entry for May 07, 2008

Today’s weather caught me off guard. Although I am a storm spotter and watch the weather closely, it can change quickly. We were receiving heavy rain periodically and more was heading our way. We were not yet in a tornado watch or warning but did have a flood watch.

My husband and I had made a run to the store to pick up a new monitor. Our storm chase partner had remained at our house. Heavy rains began again around 5 PM and suddenly the tornado sirens could be heard. What a time to be shopping with no radar or news contact!

The storm subsided and we returned home to find the tornado crossed above our house. Our chase partner was able to observe the rotation above him and feel the pressure. The tornado was rain-wrapped and was “skipping”. He also observed the funnel touch down after it passed over the lake next to us.

Others were not as fortunate. Although there were no injuries reported, many houses and trees were damaged as several small tornadoes developed. One massive tree fell on a gas meter causing the area to be evacuated. In another area, a large tree was uprooted and fell onto the balcony of an apartment. Power lines were down in different areas leaving approximately 13,000 customers with no power. Reports are still coming in on the damage.

Welcome to tornado alley!

Emergency Weather Radios For Hearing Impaired

April 26, 2008

The material provided is intended as general information on how NOAA Weather Radio (NWR) can be used as an emergency warning tool for people who are deaf or hard of hearing. It is not intended to be an all inclusive listing of how the system can be used, what products are available, or an endorsement of any product or vendor listed herein.

In several cases there are complete off-the-shelf NWR receiver based systems available that will perform the required emergency warning function as they come from the box. In some cases, where a home alerting system is already in place, the NWR receiver can be connected to the existing alerting system, much the same as a door bell, smoke detector, or other sensor. In other cases, persons with some electronic skills can purchase the NWR receiver and other components and assemble them into a system designed to meet their own special needs.

In simple systems, alarm devices can be directly connected (hardwired) to the output of the NWR receiver. In more complex installations, using wireless and wired remote modules, connections are made through devices that allow more remote and versatile placement of alarms. Alarms may require external power from batteries or modular power supplies. Care should be taken that the complete alerting system works when commercial power has failed. See the block diagram (below) for system layouts.

The NOAA National Weather Service (NWS) does not guarantee the proper operation of any of the equipment and systems listed herein and is not liable for any damages as a result of non-receipt of alarms, alerts, or warnings from these systems. Inclusion of a product in this document does not imply endorsement by the NWS.

The following are general questions regarding use of NWR by people who are deaf or hard of hearing:

1. QUESTION: Why should I be interested in NOAA Weather Radio (NWR)?

2. QUESTION: What good is a radio to people who are deaf or hard of hearing?

3. QUESTION: How does it work?

4. QUESTION: What should I do when I receive a Warning from NWR?

5. QUESTION: Where can I get additional information about the event that caused the Warning to be issued?

6. QUESTION: Where can I get the necessary equipment and what does it cost?

7. QUESTION: What should I do if I’m interested in using NWR to get warnings of life threatening weather or other hazards?

8. QUESTION: Where can I buy an NWR receiver and accessories for people who are deaf and hard of hearing?

9. QUESTION: Is anything being done to improve the delivery of warnings of life threatening events to people who are deaf and hard of hearing?


1. ANSWER: Warnings provided by NWR can save your life during periods of local severe weather or other life threatening hazard conditions

2. ANSWER: The voice broadcast of NWR is of no value to people who are deaf and of limited value to many people who are hard of hearing – very little of the audio information broadcast can be understood by individuals with moderate to severe hearing loss.

However, other non-verbal information is imbedded in these broadcasts that can provide timely, critical warnings of life threatening events to people who are deaf or hard of hearing.

The NWS uses something called Specific Area Message Encoding (SAME) technology to send warnings of imminent severe weather or other hazard conditions from any of 122 Weather Forecast Offices directly into homes, offices, public buildings, churches, hospitals, nursing homes, and to many other locations using the National NWR network of transmitter stations. At least 97% of the American population is covered by NWR. The NWS is working toward a coverage level of 95% in every State.

Special NWR SAME radio receivers can be programmed to set off an alarm for specific events (tornado, flash flood, toxic spill, evacuate, etc.) and specific locations (your county) of interest to you, the listener. Some receivers are also equipped with special output connectors that activate alerting devices – bed shakers, pillow vibrators, sirens, and strobe lights or other alerting systems.

Those who use hearing aids or cochlear implants equipped with telecoils may also be able to use Aloop technology to listen to NWR broadcasts. Many receivers are equipped with external output connectors that will accept a Aneckloop. The Aneckloop creates an electromagnetic field that couples the NWR receiver to the telecoil in the hearing aid or cochlear implant, allowing the user to hear the broadcast. FM, infrared, and loop based Assistive Listening Devices can also be used. There are also some hearing aids and cochlear implants with adapter cables that can connect directly to the output of an NWR receiver.


3.ANSWER: Forecasters at your local NWS Weather Forecast Office (WFO) decide that a severe weather event is occurring or about to occur, or local authorities determine that a hazardous event (nuclear power plant problem, a chemical or biological accident, etc.) has occurred and is a threat to the local populace. The information is immediately input into a computer at the local WFO and immediately broadcast by NWR transmitters that cover the areas at risk. Digital codes are added to each broadcast identifying the event (tornado, flash flood, local civil emergency, etc.) and the location (Montgomery, Prince Georges, and Anne Arundel Counties). When the Warning is received by an NWR SAME receiver, the receiver turns itself on, sounds an alarm, activates a warning light, writes a short message (TORNADO) on the display, and activates any external devices (strobe lights, sirens, vibrators, etc.) connected to the receiver.


4. ANSWER: If the Warning is for a Tornado or Flash Flood you should immediately take steps to protect yourself. Every household should have an emergency plan in place that includes pre-established actions that need to be taken to lessen the likelihood of injury or death. These may include moving to the basement, a special safe room, or lower, interior levels of your home during a tornado or evacuating to higher ground along a pre-established, safe route during a flash flood. Household emergency plans can be developed with assistance from your local, county, or state emergency management office and or the Federal Emergency Management Agency.


5. ANSWER: The NWR SAME Warning message broadcast you receive also triggers the Emergency Alert System at your local television stations. The message is also immediately available on the internet at sites accessible from the NWS Home Page at www.weather.gov. Either or both of these sources of text information can be monitored to get additional information, if you can do so without putting yourself at risk. There are also numerous sources of emergency information supplied by Email by various commercial telecommunication service providers on cell phones, pagers, and other personal digital devices, however, these may not be as timely as the NWS services.


6. ANSWER: NWR SAME receivers with features useful to people who are deaf and hard of hearing, such as an output to activate external devices, an LCD display, and battery back-up power are manufactured and/or sold by several companies, including Radio Shack, Midland, Recom, Homesafe, and First Alert. Connecting some of them to external alarm devices requires knowledge of electronics and some electronic technician skills for proper installation. However, there are systems that have been assembled, tested, packaged, and marketed by Silent Call, Harris Communications, Compu-TTY, and Homesafe that are simple to install and use. The cost of a basic NWR SAME receiver is $50 to $90. Systems packaged with external alarm devices start at $100.

The Consumer Electronics Association (CEA) and NOAA collaborated on the development of an industry standard and a certification program for Public Alert (NWR capable) electronic devices that include displays and external alarms useful to deaf and hard of hearing people. Purchasing a Public Alert certified NOAA Weather Radio assures that you are getting a high quality receiver, however, you still need to make sure it works for you in your location and that it is able to activate any external alarms you want to use.


7. ANSWER: Satisfy yourself that your area is vulnerable to weather or hazard conditions that warrant expenditure for an emergency warning system. The National Weather Service believes that NWR receivers should be as common as smoke detectors. Visit the NWS web site at www.weather.gov/nwr to learn more about NWS and NWR and to determine if the area in which you live is covered by NWR. The web site has very specific information, including coverage maps, state and county listings, and codes needed to program receivers.



Contact any of the vendors listed below:

Vendors of NWR receivers packaged for Deaf and Hard of Hearing People

Silent Call – 800-572-5227 – www.silent-call.com
(Download catalog, page 12-14)

Harris Communications – 800-825-6758 – www.harriscomm.com
(Search on Weather)

Homesafe, Inc. – 800-607-6737 – www.homesafeinc.com


More NWR Alerting Equipment

9. ANSWER: Yes, there are currently efforts under way that will have a direct impact on warning systems to serve the deaf and hard of hearing.

The NOAA Weather Wire Service (NWWS) provides the direct delivery of text warning messages via Email by subscription. This provides Email delivery to any device (pager, cell phone, PDA, PC) capable of receiving text Email. Messages are selected by event type (tornado, flash flood, etc.) and issuing office (Washington, DC, New York City, etc.) and can be used to supplement NWR SAME warnings or to get specific information on severe weather anywhere in the country.

NOAA and the Consumer Electronics Association developed a standard (CEA-2009) and a certification program (Public Alert) based on NWR SAME technology. Most Public Alert certified devices are able to provide an alarm output that can drive devices to warn the deaf and hard of hearing. Public Alert certified devices are currently available from a number of manufacturers.

NOAA NWS has initiated a Weather Radio Improvement Program that includes greatly improved access for people who are deaf or hard of hearing.

All of these innovations have direct, significant application to deaf and hard of hearing warning improvement.

NWR Alerting Equipment

NWR Receivers with NWR SAME and an Alarm Output

Special receivers that can tune to NWR frequencies and trigger an auxiliary output on the basis of a received All Hazards warning from the NWS for a specific event in a specific state and county. Items with an asterisk (*) can be purchased as a system with external alarms (bad shaker, strobe, siren, etc.). Items in bold type are Public Alert Certified. Items in italics are out of production, but still may be available.

First Alert WX-167 Homesafe 2000HS* Midland 74-200
Homesafe 2005HS* First Alert WX-67 Radio Shack Model 250
Radio Shack Model 262 Midland WR-30 Radio Shack Model 258
Midland WR-300 Midland WR-100 Radio Shack Model 261
Reecom R-1650 First Alert WX-167 Radio Shack Model 249
Silent Call WX-67S* Midland R-300 Reecom-1630

Power Module Interface or Signaler: Converts the output of the NWR SAME receiver into a signal that is carried by electrical wiring in the home or by means of a wireless transmission that can be received anywhere in the home.

Radio Shack (X-10 Powerhouse Modules) Alertmaster AM-AX, AM-DX
Sonic Alert DS 700 Silent Call X67T*
Silent Call SC-DOT1003-2 Compu-TTY KA300TX

Remote Modules or Receiver: Receives the signal from a Power Interface or Signaler and coverts it into something that can activate an internal or external alarm.

Radio Shack (X-10 Powerhouse Modules) Alertmaster AM-RX2
Sonic Alert SA 201 & 101 Compu-TTY KA300RX
Silent Call SC-REC09214, SC- REC1001-N

Alarm Devices: Converts the alarm signal into visual, audio, or mechanical form that is more easily sensed by a person with a hearing disability. (Some of these do not meet Americans with Disabilities Act requirements, but may be useful in special circumstances.)

Strobe Light
Radio Shack 49-527 Homesafe Kit*
Harris HAL-2737 First Alert WX-TRS*
Harris DATA-1005 Reecom R1603
Silent Call X67-S* Midland 18-STR

Radio Shack 49-490 or 49-488

Bed /Pillow Shaker
Harris SA-SS120V, SS-SS12V , NFS-BV6670
Silent Call X67-V*, Homesafe Kit*

Appliance module
Radio Shack (X-10 Powerhouse Modules)

The above are available from the sources listed below:

Radio Shack – See local store

Harris Communications 1-800-825-6758*

NFSS Communications 1-888-589-6670

Potomac Technology 1-800-433-2838*

Homesafe, Inc. 1-800-607-6737*

Midland Consumer Radio 1-800-241-8500

Silent Call 1-800-572-5227*

Compu-TTY 1-817-738-2485 or 1970 (TTY)*

Sima Products 1-800-345-7462*

*Vendors of Silent Call, Homesafe, Compu-TTY, and First Alert packaged systems for the deaf and hard of hearing.

Other websites for NOAA Weather Radios:



The National Weather Service does not guarantee the proper operation of any of the equipment or systems listed herein and is not liable for any damages as a result of non-receipt of alarms, alerts, or warnings from these systems. Inclusion of a product in this document does not imply endorsement by the NWS.

Alerting for the Deaf and Hard of Hearing diagram