Alert archive / California / Severe Thunderstorm Warnings in 2000
Severe Thunderstorm Warning 7, NWS Hanford, CA
NWS Hanford, CA issued this severe thunderstorm warning at Apr 13, 2000, 3:18 PM PDT for Fresno County, Madera County, California. It was in force for 47 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, 3:18 PM PDT (22:18 UTC)
- Expired
- Apr 13, 2000, 4:05 PM PDT
- In force
- 47 min
- Issued by
- NWS Hanford, CA
- Area
- Whole counties
Counties Fresno County, CA, Madera County, CA
The radar
The San Joaquin Valley radar (KHNX), 75 km from the middle of the area, began a volume at 22:18 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, 10.3 hours before the alert went out and 235 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
- 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
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS56 KHNX 132219 SVRFAT CAC019-039-132305- BULLETIN-EAS ACTIVATION REQUIRED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE HANFORD CA 318 PM PDT THU APR 13 2000 THE NATIONAL WEATHER SERVICE IN HANFORD HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... WESTERN MADERA COUNTY IN CENTRAL CALIFORNIA CENTRAL FRESNO COUNTY IN CENTRAL CALIFORNIA * UNTIL 405 PM PDT * AT 315 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 10 MILES SOUTHEAST OF MADERA... MOVING NORTHEAST AT 15 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... NEAR HIGHWAY 99 ALONG THE SAN JOAQUIN RIVER AND PINEDALE IN FRESNO COUNTY AND NEAR AVENUE SEVEN IN MADERA BETWEEN 330 PM AN_D 345 PM. LARGE HAIL IS LIKELY WITH THIS STORM. THIS IS A DANGEROUS 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, 9:45 AM PDT, 5 hours 33 minutes earlier.
Area forecast discussion, Apr 13, 9:45 AM PDT, 5 hours 33 minutes before
INTERIOR CENTRAL CALIFORNIA FORECAST DISCUSSION NATIONAL WEATHER SERVICE SAN JOAQUIN VALLEY - HANFORD CA 945 AM PDT THU APR 13 2000 BROAD UPPER LOW STARTING TO FILL...CENTER LOCATED NEAR 41N/129W THIS MORN. LOW WILL PROGRESS A LITTLE CLOSER TO COAST TODAY WHILE UPPER JET AXIS NEAR 90KT IS SITUATED OVER THE CWA. BAND OF CLOUDS AND SHOWERS NEARLY STATIONARY OVER FRESNO/KINGS/N TULARE COUNTIES. PROGS INDICATE THAT VORT AXIS ASSOCIATED WITH THE JET WILL STRING OUT OVER THE DISTRICT FOR THE REMAINDER OF THE DAY AND WILL LIKELY KEEP THE PRESENT MSTR/CLD BAND NEARLY STNRY WITH SLIGHT E/SE PROGRESS THIS AFTN. AIRMASS IS MODERATELY UNSTABLE WITH HTNG...MODIFIED FCST SOUNDINGS AND LATEST 12Z ETA SHOW CAPES UP TO 500-700 J/KG THIS AFTN AND EARLY THIS EVE. THINK WE/LL SEE A DIURNAL RESURGENCE OF ACTIVITY THRU THE REMAINDER OF THE DAY THUS UPDATING MOST ZNS FOR INCREASE IN POPS. WILL GO LIKELY N OF BAKERSFIELD...WITH ELEVATED LOW TO MID LVL MSTR THE BREAKS IN CLOUDINESS NEAR MERCED COUNTY AND NW FRESNO COUNTY SHOULD FILL IN AND ALSO HELP DESTABILIZE. BUMPED POPS IN THE S END AS SUNSHINE IN PROGRESS WILL ALLOW FOR DIFFERENTIAL HTNG THAT MAY HELP SET OFF SOME CONVECTION LATER. ALSO INTRODUCED MENTION OF TSTM POSSIBILITIES INTO EVENING HOURS/2ND PERIOD GIVEN THE ABOVE. FOR EAST KERN COUNTY NIL CLOUDS THIS MORN SO ALSO ADJUSTED TEMPS FOR KERN DESERT. REST OF FCST LOOKS ON TRACK WITH THE UPPER LOW OPENING UP FURTHER AND ANOTHER DIGGING WAVE TONIGHT HELPING TO PUSH THE MAIN TROUGH AXIS INLAND...PASSING THROUGH MOST OF THE CWA FRI MORN. IDEA THAT WE/LL SEE ANOTHER DECENT SHOT AT PCPN WITH PASSAGE OF TROF AXIS CONTINUES TO LOOK GOOD. MAY NEED TO BUMP POPS A BIT FURTHER ON AFTN PKG. FROM QUICK LOOK AT THE WINDS DO NOT EXPECT ADVIS LEVEL WINDS TDA FOR KERN MTNS/DESERT...HOWEVER WILL BE A POSSIBILITY TO CONSIDER FOR FRI AS WNW FLOW ALIGNS THRU A DEEP LAYER AND SUBSIDENCE INCREASES IN THE AFTN. .HNX...NONE. LAVIS
The office that day
Everything else NWS Hanford, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 13, 3:52 PM PDT | Severe Thunderstorm Warning | HNX | Madera | 43 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.