High pressure over the region brought unseasonably warm temperatures to the northern San Joaquin Valley.
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS STO wrote it up.
High pressure over the region brought unseasonably warm temperatures to the northern San Joaquin Valley.
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Sacramento, CA wrote its last area forecast discussion before the first event at May 7, 8:11 PM PST, 3 hours 49 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE SACRAMENTO CA 911 PM PDT MON MAY 7 2007 .DISCUSSION... HIGH PRESSURE RIDGE ACROSS THE REGION RESULTED IN VERY WARM MAXIMA THIS AFTERNOON. A SERIES OF SHORT-WAVES TROUGHS MOVING THROUGH THE NORTH OF US OVER THE NEXT FEW DAYS MAY BRING SOME CLOUDS BUT DONT APPEAR TO BRING MUCH OF A CHANCE OF RAIN...HOWEVER THE WORKSTATION ETA MODEL SUGGESTS SOME ISOLATED SHOWERS AND/OR THUNDERSTORMS OVER THE SHASTA COUNTY MOUNTAINS TOMORROW AFTERNOON AND EVENING. RIGHT NOW WE HAVE SLIGHT CHANCE POPS FOR THOSE NORTHERN MOUNTAINS DURING THAT TIME PERIOD IN OUR GRIDS SO WILL LEAVE THOSE AS IS. THE MAIN EFFECT WILL BE TO MODERATE OUR MAXIMUM TEMPERATURES AS THE HEIGHTS DECREASE AND WE START TO GET AN ON-SHORE DELTA BREEZE. LATEST RUNS OF THE GFS MODEL INDICATE THAT WONT START UNTIL ABOUT 5PM TUESDAY WHICH WOULD MEAN THAT THE DOWNWARD TREND IN THE TEMPERATURES COULD BE JUST A LITTLE TOMORROW...THEN MORE PRONOUNCED ON WEDNESDAY. THE MAXIMUM TEMPERATURE GRID HAD THAT TREND...WITH JUST A COUPLE MINOR EXCEPTIONS...SO HAVE ADJUSTED THOSE FEW...BUT LEFT THE REST AS IS. & .AVIATION... HIGH PRESSURE WILL CONTINUE VFR CONDITIONS ACROSS THE REGION INTO TUESDAY. SURFACE PRESSURE GRADIENTS HAVE WEAKENED WHICH RESULTED IN LIGHTER WINDS...WHICH OUGHT TO PERSIST OVER THE NEXT 24 HOURS. && .STO WATCHES/WARNINGS/ADVISORIES...NONE. &&
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE SACRAMENTO CA 700 AM PDT MON MAY 7 2007 CAZ013>019-063-064-066>069-081400- SHASTA LAKE AREA/NORTHERN SHASTA COUNTY- BURNEY BASIN/EASTERN SHASTA COUNTY-NORTHERN SACRAMENTO VALLEY- CENTRAL SACRAMENTO VALLEY-SOUTHERN SACRAMENTO VALLEY- CARQUINEZ STRAIT AND DELTA-NORTHERN SAN JOAQUIN VALLEY- MOUNTAINS SOUTHWESTERN SHASTA TO NORTHERN LAKE COUNTIES- CLEAR LAKE/SOUTHERN LAKE COUNTY-MOTHERLODE- EAST FOOTHILLS/NORTH SACRAMENTO VALLEY- WESTERN PLUMAS COUNTY/LASSEN PARK-WEST SLOPE NORTHERN SIERRA NEVADA- 700 AM PDT MON MAY 7 2007 THIS HAZARDOUS WEATHER OUTLOOK IS FOR INTERIOR NORTHERN CALIFORNIA. .DAY ONE...TODAY NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN... TUESDAY THROUGH SUNDAY NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. THE LATEST WEATHER INFORMATION IS AVAILABLE ON THE INTERNET AT (LOWER CASE): HTTP://WWW.WRH.NOAA.GOV/STO
1 excessive heat. Local standard time, as filed.
The daily high temperature record of 98 degrees was tied at Modesto Airport. The previous record was set in 2001.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in California in 2007Every state in 2007This day in weather historyWarnings in California, May 2007
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 36754.