Alert archive / California / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 18, NWS Hanford, CA

October 9, 2000Fresno County, California

NWS Hanford, CA issued this severe thunderstorm warning at Oct 9, 2000, 10:40 PM PDT for Fresno County, California. It was in force for 30 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: Oct 9, 2000, 10:40 PM PDT (05:40 UTC)
Expired: Oct 9, 2000, 11:10 PM PDT
In force: 30 min
Issued by: NWS Hanford, CA
Area: Whole counties

County Fresno County, CA

The nearest sounding before it

Vandenberg AFB, CA (KVBG), launched 00:00Z, 5.7 hours before the alert went out and 238 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 660 m above ground
0-6 km bulk shear: 60 kt
0-1 km storm-relative helicity: -11 m²/s²
0-3 km storm-relative helicity: 84 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WUUS56 KHNX 100542
SVRFAT
CAC019-100610-

BULLETIN-EAS ACTIVATION REQUIRED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE HANFORD CA
1040 PM PDT MON OCT 9 2000

THE NATIONAL WEATHER SERVICE IN HANFORD HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  THE FOOTHILLS OF NORTHEASTERN FRESNO COUNTY IN CENTRAL CALIFORNIA

* UNTIL 1110 PM PDT

* AT 1038 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM IN THE FOOTHILLS 10 MILES NORTHEAST OF
  REEDLEY... MOVING NORTHEAST AT 25 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  DUNLAP AT 1050 PM PDT
  KINGS CANYON HIGHWAY AT 1055 PM PDT

LARGE HAIL IS LIKELY WITH THIS STORM. GO INSIDE A STURDY
BUILDING AND STAY AWAY FROM WINDOWS!

DS/ML

 
N

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 Oct 9, 9:45 PM PDT, 55 minutes earlier.

Area forecast discussion, Oct 9, 9:45 PM PDT, 55 minutes before

INTERIOR CENTRAL CALIFORNIA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN JOAQUIN VALLEY - HANFORD CA
945 PM PDT MON OCT 9 2000

STRONG UPPER JET CORE CONTINUES TO DIG SOUTHEAST AND WILL MOVE
INLAND TONIGHT OVER THE SOUTHERN PART OF THE DISTRICT TOWARDS SOCAL.
THE STRONGEST UPPER DIFFLUENCE AND LIFT HAS BEEN PROGGED FOR THIS
EVENING IN THE LEFT EXIT REGION OF THIS FEATURE...AND THE AREA OF
BEST LOW-MID LVL CONVERGENCE NEAR THE CDFNT CONTINUES TO SUPPORT A
CONVECTIVE BAND WITH SCATTERED TSTMS. THUNDERSTORM ACTIVITY IN CNTRL
FRESNO COUNTY NEAR FRESNO/SELMA CONTAINING LOCALLY HVY RAFL...
MONITORING ON 88D AT THIS TIME. THE OVERALL PICTURE THUS FAR
INDICATES MSTR STILL NOT TOO IMPRESSIVE ON THE SOUTHERN END OF
SYSTEM AND BRINGS THE AMOUNT OF PCPN INTO QUESTION FOR THE SIERRA
GENERALLY SOUTH OF LODGEPOLE. AFTER MIDNIGHT BEST LIFT WILL BE
SHIFTING EAST AND BRING DECREASING TRENDS TO PCPN. LOOKS MOST
PROBABLE THAT WE/LL EXPERIENCE A LULL HEADING INTO EARLY TUE/TUE
MORN. THE REST OF TUE STILL LOOKS QUITE UNSETTLED WITH DEEPER MSTR
OVER CNTRL CA COMBINING WITH ANOTHER STRONG SHORT WAVE FEATURE. WILL
MAINTAIN WINTER STORM WARNINGS AND SNOW ADVISORY AT THIS TIME.

BLOWING DUST ADVISORY WAS ISSUED EARLIER FOR SOUTHERN SAN JOAQUIN
VLLY AS GUSTY NW WINDS AHEAD OF CDFNT HAD RESULTED IN LOCAL VSBY
REDUCTIONS...WILL UPDATE BETWEEN 10-11 PM FOR ITS EXPIRATION AND
OTHER MINOR ADJUSTMENTS FOR TONIGHT.

OTHER UPCOMING CONCERNS WILL BE LOCALLY STRONG GUSTS NEAR KERN
COUNTY MTNS/DESERT ESPECIALLY NEAR MOJAVE FOR TUE MORN. WINDS APPEAR
FAVORABLY ALIGNED WITH SUBSIDENCE BRINGING THE POSSIBILITY FOR
STRONG GUSTS. CONVECTIVE THREAT OVER SJ VLLY WILL BE PRESENT WITH
SUFFICIENT MSTR AND INSTABILITY UNDER COLD POOL ALOFT FOR AFTN
TSTMS. LLVL WIND PROFILES COULD BECOME FAVORABLE FOR STRONGER CELLS.

.HNX...WINTER STORM WARNING FOR THE SOUTHERN SIERRA NEVADA ABOVE
       6000 FEET FROM YOSEMITE PARK TO THE KERN COUNTY LINE TONIGHT
       AND TUESDAY.
    ...SNOW ADVISORY FOR THE KERN COUNTY MOUNTAINS ABOVE 6000 FEET
       LATE TONIGHT AND TUESDAY.
    ...BLOWING DUST ADVISORY FOR THE SOUTHERN SAN JOAQUIN VALLEY
       UNTIL 11 PM.

LAVIS

The office that day

Everything else NWS Hanford, CA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Oct 10, 4:06 PM PDT	Severe Thunderstorm Warning	HNX	Fresno	34 min
Oct 10, 4:42 PM PDT	Severe Thunderstorm Warning	HNX	Kings	48 min

Nearby

Severe Thunderstorm Warnings in California, 2000 Every severe thunderstorm warning in 2000

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.