Alert archive / California / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 9, NWS Hanford, CA

June 28, 2000Tuolumne County, California

NWS Hanford, CA issued this severe thunderstorm warning at Jun 28, 2000, 3:25 PM PDT for Tuolumne County, California. It was in force for 60 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: Jun 28, 2000, 3:25 PM PDT (22:25 UTC)
Expired: Jun 28, 2000, 4:25 PM PDT
In force: 60 min
Issued by: NWS Hanford, CA
Area: Whole counties

County Tuolumne County, CA

The nearest sounding before it

Oakland, CA (KOAK), launched 12:00Z, 10.4 hours before the alert went out and 200 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: 2219 m above ground
0-6 km bulk shear: 12 kt
0-1 km storm-relative helicity: -14 m²/s²
0-3 km storm-relative helicity: 38 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 282226
SVRFAT
CAC109-282325-

BULLETIN-EAS ACTIVATION REQUIRED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE HANFORD CA
325 PM PDT WED JUN 28 2000

THE NATIONAL WEATHER SERVICE IN HANFORD HAS ISSUED A

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

* UNTIL 425 PM PDT

* AT 320 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM IN YOSEMITE PARK 15 MILES WEST OF
  TUOLUMNE MEADOWS...NEARLY STATIONARY.

* THE SEVERE THUNDERSTORM WILL REMAIN NEARLY STATIONARY.

THIS IS A DANGEROUS STORM! STAY INDOORS AWAY FROM WINDOWS.


IF YOU ARE CAUGHT OUTSIDE SEEK SHELTER. VEHICLES ARE GOOD
PROTECTION FROM LIGHTNING. IF YOU CANNOT GET INDOORS...AVOID
ISOLATED TALL OBJECTS SUCH AS TREES OR TELEPHONE POLES. CROUCH
DOWN LOW ON THE BALLS OF YOUR FEET MAKING YOURSELF LESS OF A
TARGET FROM LIGHTNING.

DUDLEY
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 Jun 28, 3:00 PM PDT, 25 minutes earlier.

Area forecast discussion, Jun 28, 3:00 PM PDT, 25 minutes before

INTERIOR CENTRAL CALIFORNIA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN JOAQUIN VALLEY - HANFORD CA
300 PM PDT WED JUN 28 2000

SATELLITE AND RADAR IMAGERY SHOWING ALL THUNDERSTORMS LIMITED TO
KINGS CANYON NORTHWARD THIS AFTERNOON WITH CU OVER THE MOUNTAINS OF
TULARE COUNTY IN THE DEFORMATION ZONE. NOTHING REALLY HAPPENING OVER
KERN MOUNTAINS/DESERT THIS AFTERNOON AS WATER VAPOR IMAGERY SHOWS
MID LEVEL MOISTURE FROM THE SOUTH STILL OVER SAN BERDOO COUNTY.
EXPECT CONVECTION TO CONTINUE THROUGH THE EARLY EVENING HOURS. ON
THURSDAY...MODELS REALLY DON'T HINT AT ANY BIG CHANGES WITH RIDGE IN
PLACE OVER REGION. WILL OPT TO KEEP THUNDER CHANCES OVER THE SIERRA
CREST AND LEAVE OUT OF DESERTS. FOR THE VALLEY...CONTINUED HOT AND
DRY. ON FRIDAY...THINGS GET A LITTLE MORE INTERSTING AS ETA/AVN
BEGIN TO INCREASE SW FLOW AT 700 MB AHEAD OF DEEPENING TROF OFF THE
PAC NW COAST. SOME HINTING AT MARINE COOLING INTO NORTHERN SJ VALLEY
AND PER COORDINATION WITH SAC WILL COOL TEMPS DOWN 3 DEG OR SO. THIS
WILL HAVE TO BE WATCHED AS IF MARINE PUSH IS STRONGER...COOLING TO
ALSO BE. WITH DRIER SW FLOW ALOFT WILL OPT TO KEEP ONLY SLIGHT
CHANCE OF CONVECTION OVER THE SIERRA...HOWEVER AVN/ETA SUGGEST IT
MAY BE EAST OF SIERRA.

IN THE EXTENDED...MRF/UKMET CONTINUE TREND OF BRINGING A FAIRLY DEEP
TROF OFF THE CALIFORNIA COAST SATURDAY AND SUNDAY WITH COOLER AIR.
H7 TEMPS FALL OFF BY ABOUT 5-6 DEG C BY SUNDAY. ENSEMBLE FORECASTS
NOT AS AGRESSIVE WITH MRF SOLUTION AND TRY TO LIFT TROUGH NE OUT OF
AREA QUICKLY BY MONDAY. OVERALL...COOLDOWN A CERTAINTY BUT HOW LONG
LASTING IS UP TO DEBATE.
.HNX...NONE.

FAT UU 073/103 071/100 066 93000
<BFL UU 073/102 071/100 067 93000
YNP BU 061/094 059/091 055 93210

DUDLEY

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.