Alert archive / California / Severe Thunderstorm Warnings in 2008
Severe Thunderstorm Warning 10, NWS Hanford, CA
NWS Hanford, CA issued this severe thunderstorm warning at Jul 12, 2008, 3:51 PM PDT for Kern County, Tulare County, California. It was in force for 54 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, 3:51 PM PDT (22:51 UTC)
- Expired
- Jul 12, 2008, 4:45 PM PDT
- In force
- 54 min
- Issued by
- NWS Hanford, CA
- Area
- Storm-based polygon
Counties Kern County, CA, Tulare County, CA
The radar
The San Joaquin Valley radar (KHNX), 98 km from the middle of the area, began a volume at 22:51 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, 10.9 hours before the alert went out and 131 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, 3:06 PM PDT, 45 minutes earlier.
Area forecast discussion, Jul 12, 3:06 PM PDT, 45 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE SAN JOAQUIN VALLEY - HANFORD CA 306 PM PDT SAT JUL 12 2008 .DISCUSSION...AN EASTERLY WAVE SLOWLY PROGRESSING WESTWARD CONTINUES TO AFFECT INYO AND SAN BERNARDINO COUNTIES THIS AFTERNOON. SATELLITE IMAGERY ALONG WITH REGIONAL DOPPLER RADAR OBSERVATIONS SHOW CONVECTIVE DEVELOPMENT MAINLY OVER THE TULARE AND FRESNO COUNTY MOUNTAINS...AND POSSIBLY STARTING OVER THE KERN COUNTY MOUNTAINS. LATEST MODEL PROGS CONTINUE TO SHOW THE BEST LI/S AND CAPE VALUES RESIDING OVER THE SIERRA NEVADA AND KERN COUNTY MOUNTAINS. WILL NOT RULE OUT THE POSSIBILITY OF SOME CONVECTION EXTENDING INTO THE SOUTHERN SAN JOAQUIN VALLEY AROUND KERN COUNTY AS DEVELOPMENT DRIFTS OFF THE HIGHER ELEVATIONS. YET...WILL CONFINE THE DEVELOPMENT TO AREAS OUTSIDE OF MERCED AND LOWER MARIPOSA COUNTIES AS INSTABILITY BECOMES VERY WEAK IN THOSE AREAS AND THE FLOW ALOFT BECOMES MORE WESTERLY. SHOULD EXPECT THUNDERSTORM ACTIVITY TO DIMINISH OVERNIGHT BEFORE DEVELOPMENT BEGINS AGAIN ON SUNDAY. LOOKING FURTHER OUT...MONDAY WILL SEE A CONTINUATION OF THUNDERSTORM ACTIVITY AS MODELS SHOW A NORTHWARD SURGE ON MONSOONAL MOISTURE PUSHING INTO THE DISTRICT. BY TUESDAY...MODELS BEGIN SHOWING A MORE WESTERLY (ONSHORE) FLOW PATTERN DEVELOPING TO SHIFT THE MOISTURE EASTWARD. WILL CONFINE ANY FURTHER DEVELOPMENT TO THE MOUNTAINS BEFORE DRYING THE ENTIRE DISTRICT ON WEDNESDAY. THE NEXT WEATHER CONCERN WILL ARISE TOWARD THE END OF THE PERIOD AROUND SATURDAY AS THE REMAINS OF A DISTURBANCE VEERING EAST AND INTO CENTRAL CALIFORNIA. WHILE STILL IS STILL AROUND THE END OF THE PERIOD...WILL NOT ADD ANY MENTION OF PRECIP TOWARD SATURDAY. YET...WILL MONITOR THIS SITUATION TO SEE OF THIS TROPICAL DISTURBANCE MANAGES TO MOVE CLOSER TO THE DISTRICT. && .AVIATION...VFR EXCEPT AREAS OF MVFR SFC AND ALOFT IN HZ/FU ACROSS THE CENTRAL CALIFORNIA INTERIOR THROUGH 00Z MONDAY. ISOLATED THUNDERSTORMS CONTINUING THROUGH TONIGHT INTO SUNDAY ACROSS THE MTNS AND DESERTS...POSSIBLY SPREADING WEST INTO THE SAN JOAQUIN VALLEY AND FOOTHILLS TONIGHT INTO SUNDAY. && .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, 10 hours 53 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
In the hours before
Special weather statement, Jul 12, 3:31 PM PDT, 20 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SAN JOAQUIN VALLEY - HANFORD CA 331 PM PDT SAT JUL 12 2008 CAZ095-097-130015- KERN COUNTY MOUNTAINS-TULARE COUNTY MOUNTAINS- 331 PM PDT SAT JUL 12 2008 ...GUSTY WINDS POSSIBLE THROUGH 5 PM NEAR GLENNVILLE AND LAKE ISABELLA... A THUNDERSTORM COMPLEX OVER SOUTHEASTERN TULARE COUNTY WAS MOVING SOUTH AT 5 MPH TOWARD THE KERN COUNTY LINE. AS INDIVIDUAL THUNDERSTORM CELLS COLLAPSE...THEY MAY PRODUCE STRONG OUTFLOW WINDS. THESE WINDS COULD AFFECT THE JOHNSONDALE...GLENNVILLE... KERNVILLE AND LAKE ISABELLA AREAS THROUGH 5 PM TODAY. BOATERS ON LAKE ISABELLA SHOULD BE ALERT FOR GUSTY WINDS THAT COULD PRODUCE ROUGH WATERS AND CAPSIZE BOATS. LISTEN TO NOAA WEATHER RADIO...OR YOUR FAVORITE NEWS SOURCE...FOR UPDATES ON THIS SITUATION. SANGER 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, 2:42 PM PDT | Severe Thunderstorm Warning | HNX | Tulare | 63 min |
| Jul 12, 2:52 PM PDT | Flash Flood Warning | HNX | Tulare | 113 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.