Calm winds after a Delta Breeze combined with mostly clear skies to allow overnight temperatures to drop to unseasonably cool levels in the northern San Joaquin and southern Sacramento Valleys.
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.
Calm winds after a Delta Breeze combined with mostly clear skies to allow overnight temperatures to drop to unseasonably cool levels in the northern San Joaquin and southern Sacramento Valleys.
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 Jul 21, 5:30 AM PST, 50 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE SACRAMENTO CA 630 AM PDT MON JUL 21 2008 AVIATION DISCUSSION UPDATED .DISCUSSION... INTERESTING WEATHER PATTERN CONTINUES ACROSS THE REGION EARLY THIS MORNING. UPPER LOW REMAINS OFF THE NORTHWEST COAST OF CALIFORNIA AND IS BEGINNING TO SHOW SOME ENHANCEMENT ON WATER VAPOR IMAGERY ACROSS THE FAR NORTHWEST PORTION OF THE STATE. THE MOISTURE PLUME EXTENDING NORTHEASTWARD FROM THE REMNANTS OF A TROPICAL SYSTEM TO THE SOUTHWEST OF CALIFORNIA REMAINS IN PLACE ACROSS CENTRAL CALIFORNIA UP INTO CENTRAL NEVADA. A FEW SHOWERS AND THUNDERSTORMS DEVELOPED ALONG THIS PLUME ON SUNDAY WITH A FEW LOCATIONS IN THE NORTHERN SIERRA RECEIVING LESS THAN A TENTH OF AN INCH OF RAIN. THE UPPER LOW IS EXPECTED TO BEGIN TO MOVE TO THE NORTH COAST LATER TODAY AND THEN INLAND ACROSS FAR NORTHERN CALIFORNIA TONIGHT. MOISTURE WITH THE LOW IS RATHER LIMITED WITH DEEPER MOISTURE EXPECTED TO REMAIN FURTHER NORTH AND WEST OF THE FORECAST AREA... THOUGH EXPECT THAT THERE WILL BE ENOUGH FOR A FEW SHOWERS AND THUNDERSTORMS LATER THIS AFTERNOON CONTINUING INTO TONIGHT AS THE LOW MOVES INLAND. COOLER TEMPERATURES WILL ARE EXPECTED ACROSS MOST OF THE REGION TODAY AS MODERATELY STRONG ONSHORE FLOW CONTINUES. AREAS THAT SAW MUCH OF THERE COOLING YESTERDAY MAY ACTUALLY GO UP A FEW DEGREES TODAY. THE MARINE LAYER REMAINS FAIRLY DEEP (AROUND 2500-3000 FT) AND GIVEN THE GOOD ONSHORE GRADIENT WE/LL LIKELY SEE SOME MORNING LOW CLOUDS INTO ABOUT THE LOWER THIRD OF THE SACRAMENTO VALLEY. THE UPPER LOW PUSHES OFF TO OUR NORTHEAST ON TUESDAY WITH HIGH PRESSURE QUICKLY REBUILDING ACROSS THE REGION LEADING TO WARMER TEMPERATURES ACROSS THE REGION FOR THE REMAINDER OF THE WEEK. WE/LL HAVE TO KEEP AN EYE ON HURRICANE FAUSTO WHICH IS PRESENTLY WEST SOUTHWEST OF THE SOUTHERN TIP OF BAJA CALIFORNIA. THE HURRICANE IS FORECAST TO CONTINUE MOVING NORTHWESTWARD AND WEAKEN THIS WEEK... AND DEPENDING ON HOW FAR NORTH IT MAKES IT BEFORE DISSIPATING WE MAY EVENTUALLY SEE SOME MID AND UPPER LEVEL MOISTURE FROM ITS REMNANTS LATE IN THE WEEK AND THIS WEEKEND. && .AVIATION...UPDATE MARINE LAYER AROUND 2600 FT WITH SW SFC WND 25G35KTS IN THE DELTA...GRADUALLY DECREASING. ST LIMITED IN AREAL COVERAGE AND THICKNESS DUE TO ACCAS SCT-BKN120. ONLY FEW-SCT ST IMPACTING EXTREME SRN SAC VALLEY AND NRN SJ VALLEY THRU 15-16Z...EXCEPT AREAS BKN012 VCNTY KMHR. ISOLD TS EXPECTED TO DEVELOP THIS AFTN AND EVENING OVER INTERIOR NRN MTNS AND HIGHER TERRAIN OF SIERRA WITH FAIRLY LIGHT SFC WND OUTSIDE TS...G25-30KTS VCNTY TS. JCLAPP && .STO WATCHES/WARNINGS/ADVISORIES...NONE. &&
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE SACRAMENTO CA 550 AM PDT MON JUL 21 2008 CAZ013>019-063-064-066>069-221400- 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- 550 AM PDT MON JUL 21 2008 THIS HAZARDOUS WEATHER OUTLOOK IS FOR INTERIOR NORTHERN CALIFORNIA. .DAY ONE...TODAY A FEW SHOWERS AND THUNDERSTORMS WILL BE POSSIBLE ACROSS THE MOUNTAINS TODAY AND TONIGHT...OTHERWISE 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
2 cold/wind chill. Local standard time, as filed.
A daily minimum temperature record of 52 degrees was tied at the Sacramento Executive Airport. The temperature had been previously reached in 1951.
A daily minimum temperature record of 52 degrees was set at the Stockton Airport. This broke the previous record of 53 degrees set in 2001.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in California in 2008Every state in 2008This day in weather historyWarnings in California, July 2008
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: 111884, 111881.