Alert archive / California / Severe Thunderstorm Warnings in 2008
Severe Thunderstorm Warning 9, NWS Hanford, CA
NWS Hanford, CA issued this severe thunderstorm warning at Jul 12, 2008, 2:42 PM PDT for Tulare County, California. It was in force for 63 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Jul 12, 2008, 2:42 PM PDT (21:42 UTC)
- Expired
- Jul 12, 2008, 3:45 PM PDT
- In force
- 63 min
- Issued by
- NWS Hanford, CA
- Area
- Storm-based polygon
County Tulare County, CA
The radar
The San Joaquin Valley radar (KHNX), 75 km from the middle of the area, began a volume at 21:43 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Edwards AFB, CA (KEDW), launched 12:00Z, 9.7 hours before the alert went out and 172 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 2429 m above ground
- 0-6 km bulk shear
- 9 kt
- 0-1 km storm-relative helicity
- 11 m²/s²
- 0-3 km storm-relative helicity
- 18 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Hanford, CA wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 12, 9:28 AM PDT, 5 hours 14 minutes earlier.
Area forecast discussion, Jul 12, 9:28 AM PDT, 5 hours 14 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE SAN JOAQUIN VALLEY - HANFORD CA 928 AM PDT SAT JUL 12 2008 .DISCUSSION...SATELLITE IMAGERY ALONG WITH MODEL UPPER AIR ANALYSIS IS SHOWING AN EASTERLY WAVE PROGRESSING WESTWARD AND CURRENTLY AFFECTING INYO (POSSIBLY SAN BERNARDINO) COUNTY. MODELS PROG THE TIMING OF THIS EASTERLY WAVE TO AFFECT EASTERN TULARE AND KERN COUNTIES DURING THE MID DAY HOURS WITH ISOLATED SHOWERS. BEST LI/S AND CAPE VALUES WILL RESIDE OVER SIERRA NEVADA AND KERN MOUNTAINS/DESERTS WITH SOME INSTABILITY EXTENDING INTO THE SOUTHERN SAN JOAQUIN VALLEY AROUND KERN COUNTY. FURTHERMORE... 850-700MB LAYER THETA-E VALUES OF 340K ALONG WITH 60-65 PERCENT RH VALUES AT THE 700-500MB LAYER COULD SUPPORT CONVECTIVE DEVELOPMENT THIS AFTERNOON. WHILE UPPER LEVEL SUPPORT WILL REMAIN WEAK TODAY...OROGRAPHIC LIFT FROM THE EASTERLY WINDS AT 700MB COULD HELP SUPPORT DEVELOPMENT...MAINLY OVER THE MOUNTAINS...TODAY. THEREFORE...WILL MAKE NO UPDATES TO THE FORECAST AS ALL WEATHER ELEMENTS ON TRACK FOR SHOWERS AND POSSIBLE THUNDERSTORMS THIS AFTERNOON. && .AVIATION...VFR EXCEPT AREAS OF MVFR SFC AND ALOFT IN HZ/FU ACROSS THE CENTRAL CA INTERIOR THROUGH 18Z SUNDAY. ISOLATED THUNDERSTORMS THIS AFTERNOON AND TONIGHT INTO SUNDAY MORNING ACROSS THE MTNS AND DESERTS...POSSIBLY EXTENDING INTO THE SAN JOAQUIN VALLEY AND FOOTHILLS TONIGHT INTO SUNDAY MORNING. && .AIR QUALITY ISSUES...PLEASE SEE SFOAQAHNX. && .HNX WATCHES/WARNINGS/ADVISORIES...NONE. && PUBLIC...MOLINA AVN/FW...SANGER WEATHER.GOV/HANFORD
Hazardous weather outlook, Jul 12, 4:58 AM PDT, 9 hours 44 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE SAN JOAQUIN VALLEY - HANFORD CA 458 AM PDT SAT JUL 12 2008 CAZ089>099-131200- WEST CENTRAL SAN JOAQUIN VALLEY-EAST CENTRAL SAN JOAQUIN VALLEY- SOUTHWESTERN SAN JOAQUIN VALLEY-SOUTHEASTERN SAN JOAQUIN VALLEY- MARIPOSA MADERA AND FRESNO COUNTY FOOTHILLS- TULARE COUNTY FOOTHILLS-KERN COUNTY MOUNTAINS- SIERRA NEVADA FROM YOSEMITE TO KINGS CANYON- TULARE COUNTY MOUNTAINS-INDIAN WELLS VALLEY- SOUTHEASTERN KERN COUNTY DESERT- 458 AM PDT SAT JUL 12 2008 THIS HAZARDOUS WEATHER OUTLOOK IS FOR ALL OF INTERIOR CENTRAL CALIFORNIA. .DAY ONE...TODAY AND TONIGHT AIR QUALITY ALERT REMAINS IN EFFECT. FOR MORE INFORMATION PLEASE REFER TO SFOAQAHNX /WMO HEADER...AEUS76 KHNX/. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY AIR QUALITY ALERT WILL REMAIN IN EFFECT UNTIL AT LEAST NOON ON MONDAY. IN ADDITION...ISOLATED THUNDERSTORMS WILL BE POSSIBLE TODAY THROUGH SUNDAY EVENING IN THE SAN JOAQUIN VALLEY, ADJACENT FOOTHILLS, AND THE DESERT AREAS. THE DESERT THUNDERSTORMS MAY HAVE THE POTENTIAL FOR VERY HEAVY DOWN BURSTS RESULTING IN FLASH FLOODING OVER PRONE AREAS. .SPOTTER INFORMATION STATEMENT... SKYWARN SPOTTER ACTIVATION WILL NOT BE NEEDED. WEATHER SPOTTERS ARE ENCOURAGED TO REPORT ANY SIGNIFICANT OR UNUSUAL CONDITIONS TO THE NATIONAL WEATHER SERVICE. WEATHER.GOV/HANFORD
The office that day
Everything else NWS Hanford, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 12, 2:52 PM PDT | Flash Flood Warning | HNX | Tulare | 113 min |
| Jul 12, 3:51 PM PDT | Severe Thunderstorm Warning | HNX | Kern, Tulare | 54 min |
| Jul 12, 4:42 PM PDT | Flash Flood Warning | HNX | Kern | 2 hr |
Nearby
Severe Thunderstorm Warnings in California, 2008Every severe thunderstorm warning in 2008
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.