Alert archive / California / Severe Thunderstorm Warnings in 2001
Severe Thunderstorm Warning 7, NWS Hanford, CA
NWS Hanford, CA issued this severe thunderstorm warning at Apr 26, 2001, 5:05 PM PDT for Kern County, Kings 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 outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.
The facts
- Issued
- Apr 26, 2001, 5:05 PM PDT (00:05 UTC)
- Expired
- Apr 26, 2001, 5:35 PM PDT
- In force
- 30 min
- Issued by
- NWS Hanford, CA
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
Counties Kern County, CA, Kings County, CA
The radar
The San Joaquin Valley radar (KHNX), 67 km from the middle of the area, began a volume at 00:04 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
Vandenberg AFB, CA (KVBG), launched 00:00Z, 0.1 hours before the alert went out and 127 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
- 1776 m above ground
- 0-6 km bulk shear
- 12 kt
- 0-1 km storm-relative helicity
- -20 m²/s²
- 0-3 km storm-relative helicity
- -30 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS56 KHNX 270008 CCA SVRFAT CAC029-031-270030- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING...CORRECTED LOCATION NATIONAL WEATHER SERVICE SAN JOAQUIN VALLEY CA 505 PM PDT THU APR 26 2001 THE NATIONAL WEATHER SERVICE IN HANFORD CA HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... EXTREME NORTHWESTERN KERN COUNTY IN CENTRAL CALIFORNIA SOUTHWESTERN KINGS COUNTY IN CENTRAL CALIFORNIA * UNTIL 535 PM PDT * AT 458 PM PDT...DOPPLER RADAR SHOWED A SEVERE THUNDERSTORM OVER EXTREME SOUTHWESTERN KINGS COUNTY. THE STORM WAS NEARLY STATIONARY. * THE SEVERE THUNDERSTORM WILL BE... ALONG HIGHWAY 33 BETWEEN AVENAL AND BLACKWELLS CORNER THROUGH 535 PM PDT. THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH YOU SHOULD PREPARE FOR DAMAGING WINDS IN EXCESS OF 55 MPH...LARGE HAIL...AND DEADLY LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...PREFERABLY INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS. HEAVY RAINS MAY FLOOD LOW LYING AREAS SUCH AS DITCHES AND UNDERPASSES. AVOID THESE AREAS AND DO NOT CROSS FLOODED ROADS AS THEY MAY BE WASHED OUT. WATER LEVELS OF SMALL STREAMS AND RIVERS MAY ALSO RISE...THEREFORE SEEK HIGHER GROUND IF THREATENED BY FLOOD WATERS. REPORT SEVERE WEATHER TO THE NEAREST LAW ENFORCEMENT AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN HANFORD CA. LAT...LON 3580 12014 3565 12001 3580 11986 3596 12001 NESMITH
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 26, 2:15 PM PDT, 2 hours 50 minutes earlier.
Area forecast discussion, Apr 26, 2:15 PM PDT, 2 hours 50 minutes before
INTERIOR CENTRAL CALIFORNIA FORECAST DISCUSSION NATIONAL WEATHER SERVICE SAN JOAQUIN VALLEY - HANFORD CA 215 PM PDT THU APR 26 2001 SHORTWAVE TROUGH NEAR 123W WAS MOVING E-NE AROUND 20 KTS THIS AFTERNOON AND HAS SLOWED A BIT AS IT LIFTS INTO STRONG RIDGE CENTERED OVER THE INTERMOUNTAIN WEST. EVENING MARINE PUSH INTO THE SJ VALLEY STILL APPEARS ON TRACK AS UPPER TROUGH HAS SUSTAINED ONSHORE GRADIENTS WITH SFO-SAC OVER 3 MB...AND MARINE INVERSION AROUND 1500 FEET. AIRMASS REMAINS UNSTABLE THIS AFTERNOON AND...WITH GOES INDICATING 500-1000 J/KG CAPE AND CU DEVELOPMENT ONGOING... WILL INTRO LOW POPS FOR SOUTHERN SIERRA AND KERN MTNS THIS EVE. DESPITE SOME INITIALIZATION DIFFERENCES OVER THE ERN PAC...MODELS ARE SIMILAR AND CONSISTENT INDICATING IMPRESSIVE THICKNESS DECREASES OVER THE CWA DURING THE NEXT 60 HOURS AS SHORTWAVES ROTATING AROUND GULF OF ALASKA LOW DEEPEN UPPER TROUGH OVER THE WEST COAST STATES. CWA WILL REMAIN DRY AS MOISTURE AND UPPER DYNAMICS SHIFT ONSHORE WELL NORTH OF THE CWA. DEEPENING TROUGH...HOWEVER...WILL INCREASE ONSHORE FLOW THEREBY REINFORCING MARINE INTRUSIONS INTO THE SJ VALLEY...AND A PROVIDING A POSSIBLE RETURN TO UPSLOPE CLOUDS ALONG THE EAST SIDE AND SOUTH END. WITH SFO-LAS GRAD ALSO PROGGED TO APPROACH 12-14MB FRI/SAT...BREEZY TO WINDY CONDITIONS WILL PREVAIL ...ESPECIALLY OVER THE KERN MTNS/DESERTS. WITH ABSENCE OF UPPER SUPPORT...HOWEVER...WINDS WILL BE DRIVEN SOLELY BY LOW LEVEL GRADS AND WILL KEEP SPEEDS BELOW WAD THRESHOLDS AT THIS TIME. MEDIUM RANGE PROGS OFFER SLIGHTLY DIFFERING SOLUTIONS REGARDING STRENGTH OF ADDITIONAL SHORTWAVE TROUGHS PROGGED TO SHIFT ONSHORE OVER THE PAC NW EARLY NEXT WEEK...WITH THE MRF INDICATING SIGNIFICANT DEEPENING BY NEXT THURS. IN THE INTERIM...UPPER PATTERN WILL FAVOR CONTD DRY WX OVER THE CWA WITH TEMPS NOT STRAYING TOO FAR FROM CLIMO. .HNX...NONE. JSN
Nearby
Severe Thunderstorm Warnings in California, 2001Every severe thunderstorm warning in 2001
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.