National Weather Service United States Department of Commerce

Mississippi Valley Summer Heat Wave; Severe Thunderstorms and Flooding Possible to the North

A dangerous summer heat wave will continue much of the Plains, Mid/Lower Mississippi Valley, Southeast U.S. today and Thursday. Areas of severe thunderstorms may occur today and again on Thursday from parts of the northern/central Rockies and High Plains into the Ohio Valley and Carolinas. Excessive rainfall over similar areas may bring flash flooding today and Thursday. Read More >

High temperatures throughout the San Joaquin Valley this afternoon will be near 90 degrees, which is six to eight degrees below normal for this time of year. Here are probabilities of maximum temperatures of 92 degrees or lower for select locations in the San Joaquin Valley on Wednesday, July 6th, 20222
High temperatures throughout Central California Thursday afternoon will be a couple of degrees warmer than this afternoon. Maximum temperatures across Central California Friday afternoon will be three to five degrees warmer than Thursday afternoon. By Saturday afternoon, high temperatures throughout Central California will be near normal for this time of year.
High temperatures throughout the San Joaquin Valley Thursday afternoon will be in the lower 90s, which is around five degrees below normal for this time of year. Here are probabilities of maximum temperatures of 94 degrees or lower for select locations in the San Joaquin Valley on Thursday, July 7th, 2022.
Triple digit heat is possible in parts of the San Joaquin Valley Sunday afternoon. Triple digit heat is likely in most of the San Joaquin Valley Monday afternoon and Tuesday afternoon.
Widespread triple digit heat is expected in the San Joaquin Valley Monday afternoon. Here are probabilities of maximum temperatures of 101 degrees or higher for select locations in the San Joaquin Valley on Monday, July 11th, 2022.

 

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NWR-SAME & FIPS Codes



The Federal Information Processing Standard (FIPS) has established a numerical code for each county in California (and the rest of the Nation). These codes can be entered into new specially designed weather radios to receive NOAA Weather Radio- Specific Area Message Enconder (NWR-SAME) messages. The NWR-SAME unit at the NWS San Joaquin Valley Office places the code, in the form of a tone burst, just before and after selected messages heard on the NOAA Weather Radio (NWR) stations WXL-89, KIH-62, KAD-94 and WNG-659. 

County FIPS codesThe FIPS Decoder, available in newly designed weather radio receivers, can then be programmed to activate your receiver when they match those sent out by a weather radio station. You have the choice of either listening to the message, have it display on an LCD readout, having it print, or having it activate a warning tone alarm. Therefore, you can program your decoder to only activate when warnings are issued for your specific county and only when a specific message is sent, i.e., a severe thunderstorm warning.

So what is the advantage of a receiver with NWR-SAME capability? Let's say you live in Kings County and a tornado warning is issued for Merced County. Conventional NWR receivers with the tone-alarm feature tuned to KIH-62 would be activated, even though the tornado is far away. NWR-SAME equipped receivers eliminate this problem. 

To the right is a map of the seven-county area in California that the NWS San Joaquin Valley Office is responsible for. The numbers on the map are the FIPS codes for each county (including the portion of Yosemite National Park in Tuolumne County). If you have a NWR-SAME decoder in your NOAA Weather Radio, you can enter the FIPS code(s) for the state then the county or counties for which you would like to receive weather warnings. For example, to enter the FIPS code for Tulare County, you would enter the California state FIPS code (006) and the Tulare County code (107) (i.e., 006107). For Fresno County the FIPS code is 006019. 

Keep in mind to only enter the codes that are in the broadcast area of the Weather Radio you normally listen to. The four Weather Radio stations operated out of this office, WXL-89KIH-62KAD-94 and WNG-659 have different reception areas due to the terrain. If the sequence of FIPS numbers seem strange, it is just the number of the county in alphabetical order in California as seen in the statewide FIPS map.