Alert archive / California / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 8, NWS Hanford, CA

April 13, 2000Madera County, California

NWS Hanford, CA issued this severe thunderstorm warning at Apr 13, 2000, 3:52 PM PDT for Madera County, California. It was in force for 43 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
Apr 13, 2000, 3:52 PM PDT (22:52 UTC)
Expired
Apr 13, 2000, 4:35 PM PDT
In force
43 min
Issued by
NWS Hanford, CA
Area
Whole counties

County Madera County, CA

The radar

The San Joaquin Valley radar (KHNX), 101 km from the middle of the area, began a volume at 22:53 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

Oakland, CA (KOAK), launched 12:00Z, 10.9 hours before the alert went out and 222 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-pSkew-T log-p diagram, Oakland, CA at 12:00Z on 2000-04-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 51 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Oakland, CA at 12:00Z on 2000-04-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 79 square meters per square second.1939587897117136Sfc1 km3 km6 km9 kmRMLM
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
51 J/kg
Mixed-layer CIN
-5 J/kg
Mixed-layer LCL
769 m above ground
0-6 km bulk shear
58 kt
0-1 km storm-relative helicity
79 m²/s²
0-3 km storm-relative helicity
117 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.5

Open this sounding in Storm Lab

The text

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

000 
WUUS56 KHNX 132253
SVRFAT
CAC039-132335-

BULLETIN-EAS ACTIVATION REQUIRED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE HANFORD CA
352 PM PDT THU APR 13 2000

THE NATIONAL WEATHER SERVICE IN HANFORD HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CENTRAL MADERA COUNTY IN CENTRAL CALIFORNIA

* UNTIL 435 PM PDT

* AT 347 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 14 MILES EAST OF MADERA... MOVING NORTHEAST AT
  15 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  MILLERTON LAKE BY 415 PM PDT

LARGE HAIL AND DAMAGING WINDS ARE POSSIBLE WITH THIS STORM.
STAY INDOORS AWAY FROM WINDOWS.

TAL

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 Apr 13, 3:45 PM PDT, 7 minutes earlier.

Area forecast discussion, Apr 13, 3:45 PM PDT, 7 minutes before
INTERIOR CENTRAL CALIFORNIA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN JOAQUIN VALLEY - HANFORD CA
345 PM PDT THU APR 13 2000

AS A RESULT OF CLEARING AND AMPLE INSOLATION OVER WEST-CENTRAL
SAN JOAQUIN VALLEY THE AIRMASS HAS DESTABILIZED WITH SCATTERED TSTM
DEVELOPMENT FROM FRESNO COUNTY NORTH. PRIMARY FOCUS IN THE VERY
NEAR-TERM WILL BE THE PROGRESS OF THE STRONGER CELLS...JUST ISSUED
SVR FOR CELL PULSING STRONGER WITH HAIL NW OF FRESNO. WILL CONTINUE
TO MONITOR. STRONGER ACTIVITY SHOULD DECREASE EARLY THIS EVENING.

OTHERWISE BROAD TROUGH OFFSHORE WILL OPEN UP FURTHER AND MOVE INLAND
TONIGHT/FRI. MODELS ARE IN DECENT AGREEMENT...ETA A BIT SLOWER IN
TROUGH PASSAGE AND AVN SOLUTION PREFERRED. VORT AXIS DIGGING SE
TONIGHT WILL REACH NEAR POINT CONCEPTION INTO SOCAL FRI...HELPING TO
PUSH THE MAIN TROUGH AXIS WITH IT. WITH INCREASED MSTR ALREADY
PRESENT OVER THE DISTRICT AND WEAK TO MODERATE LIFT ASSOCIATED WITH
TROUGH PASSAGE EARLY FRI MORN...WILL GO WITH LIKELY POPS N AND
SCATTERED POPS FOR S. STRONGEST FORCING PROGGED NEAR CNTRL CST. OUR
BEST PRECIP CHANCES NEAR 12-16Z WINDOW BUT LOW ON QPF. BASED ON
LATEST MTN REPORTS INTRODUCED A MENTION OF SNOW ACCUMULATIONS FOR
HIER ELEVATIONS OF SOUTHERN SIERRA NEVADA TONIGHT/FRI MORN. THE
AMOUNTS WILL BE VARIABLE WITH SHOWER ACTIVITY.

INCREASINGLY WINDY CONDITIONS ANTICIPATED FOR KERN COUNTY MTN PASSES
AND KERN DESERTS THRU FRIDAY...WITH A POSSIBILITY FOR ADVISORY LEVEL
SPEEDS OCCURRING AND LOCALLY STRONG GUSTS BELOW PASSES/NEAR MOJAVE.
AT THIS TIME WILL KEEP JUST BELOW ADVIS CRITERIA AND ALLOW NEXT
SHIFTS TO EXAMINE CLOSELY WITH 00Z DATA.

PROGS SHOW HIGH AMOUNTS OF LINGERING LLVL MSTR IN THE WAKE OF THIS
SYSTEM FRI NIGHT/SAT...SO USUAL LINGERING STRATIFORM CLOUDS WILL
LIKELY TO PERSIST IN PORTIONS OF THE FOOTHILLS AND SJ VLLY...WITH
CLOUDS SLOW TO CLEAR UNTIL MIDDAY SAT. A DRY PERIOD IS EXPECTED FOR
SECOND PART OF FRI AND ALL OF SAT WITH TRANSITORY SHORT WAVE RIDGING.

FOR THE EXTENDED...MED RANGE MODELS STILL VARYING CONSIDERABLY ON
THE NEXT STRONG SYSTEM DIGGING OFF THE COAST SUN. LIKE MRF SOLUTION
WITH DEPTH/TIMING WHICH WILL INDICATE OUR BEST CHANCE OF RAFL BY
LATE SUN NIGHT AND DURING MON. TROUGH AXIS MAY BE PAST TUE MORN WITH
IMPROVING CONDS IF MRF VERIFIES...HOWEVER FOR NOW BROADBRUSHED FOR
MON/TUE TOGETHER AND CAN BE FINE-TUNED AS WE GET CLOSER.

.HNX...NONE.

FAT WB 054/068 052/072 050 95560
BFL EB 053/068 052/072 051 95440
YNP WB 040/054 038/061 040 95560

LAVIS

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 13, 3:18 PM PDTSevere Thunderstorm WarningHNXFresno, Madera47 min

Nearby

Severe Thunderstorm Warnings in California, 2000Every 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; radar from the NEXRAD Level II archive.