Alert archive / California / Flash Flood Warnings in 1988
Flash Flood Warning 2, NWS San Diego, CA
NWS San Diego, CA issued this flash flood warning at Aug 24, 1988, 2:25 AM PDT for Imperial County, California. It was in force for 50 min.
The area
The counties it named.
The facts
- Issued
- Aug 24, 1988, 2:25 AM PDT (09:25 UTC)
- Expired
- Aug 24, 1988, 3:15 AM PDT
- In force
- 50 min
- Issued by
- NWS San Diego, CA
- Area
- Whole counties
County Imperial County, CA
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
The nearest sounding before it
San Diego, CA (KNKX), launched 00:00Z, 9.4 hours before the alert went out and 173 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
- 3636 m above ground
- 0-6 km bulk shear
- 17 kt
- 0-1 km storm-relative helicity
- 39 m²/s²
- 0-3 km storm-relative helicity
- 50 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KLAX 240926 COR FFWLAX CAC065-025-071-241000- BULLETIN - EBS ACTIVATION REQUESTED SEVERE THUNDERSTORM AND FLASH FLOOD WARNING NATIONAL WEATHER SERVICE LOS ANGELES CA 225 AM PDT WED AUG 24 1988 ...HEADER CORRECTION... THE NATIONAL WEATHER SERVICE HAS ISSUED A ASH FLOOD WARNING UNTIL 315 AM THIS WEDNESDAY MORNING FOR PEOPLE IN THE FOLLOWING COUNTIES... CENTRAL AND EASTERN RIVERSIDE COUNTY CENTRAL AND EASTERN IMPERIAL COUNTY CENTRAL SAN BERNARDINO COUNTY RADAR...SATELLITE...AND LIGHTNING DETECTION INSTRUMENTS INDICATE THUNDERSTORMS CAPABLE OF PRODUCING HEAVY RAIN AND STRONG GUSTY WINDS ...ESPECIALLY FROM EAST OF PALM SPRINGS TO THE MORONGO VALLEY...TO THE EASTERN SLOPES OF THE SAN BERNARDINO MOUNTAINS. THE STORMS ARE MOVING TOWARDS THE WEST AND MAY EXTEND ACROSS THE MOUNTAINS INTO THE BANNING...BEAUOMONT AREA. TRAVEL ON STATE HIGHWAY 62 TO THE MORONGO VALLEY...AND INTERSTATE 10 FROM PALM SPRINGS TO THE BEAUMONT AREA MAY BE EFFECTED FOR THE NEXT8 TWO HOURS. ALSO...FLOODING IS STILL OCCURRING IN EASTERN RIVERSIDE COUNTY FROM EARLIER HEAVY RAIN...AND THE POTENTIAL FOR HEAVY RAIN EXISTS IN CENTRAL AND EASTERN IMPERIAL COUNTY. GREBE
What forecasters said that day
The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
In the hours before
Special weather statement, Aug 23, 10:15 PM PDT, 4 hours 10 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE STATION SAN DIEGO CA
10:15 PM TUE AUG 23 1988
.....SEVERE THUNDERSTORM WARNING AND A FLASH FLOOD WARNING HAS BEEN
ISSUED FOR EASTERN IMPERIAL COUNTY UNTIL 1AM.....
.....FLASH FLOOD WATCH HAS BEEN ISSUED FOR ALL OF IMPERIAL COUNTY
UNTIL 3AM.....
A NEW SURGE OF SUBTROPICAL UNSTABLE AIR MASS HAS MOVED INTO EASTERN
IMPERIAL COUNTY WITH HEAVY RAINS FROM WESTERN ARIZONA AND NORTHERN
MEXICO. THE THUNDERSTORMS CAN HAVE HEAVY RAINS AND STRONG GUSTY WINDS.
...SOME FLASH FLOODING IS LIKELY TO OCCUR IN THE WARNING AREA.
WIND GUSTS TO OVER 60 MPH WITH ZERO VISIBILITIES CAN BE EXPECTED WITH
THESE THUNDERSTORMS. THESE STORMS WILL AFFECT STATE ROUTE 95 ... THE
EXTREME EASTERN PORTIONS OF INTERSTATE 10 AND STATE ROUTE 62.
PEOPLE ARE REMINDED NEVER TO ATTEMPT CROSSING ROADWAYS COVERED WITH
WATER. IF YOY ARE OUTSIDE AND SEVERE WEATHER APPROACHES...SEEK SHELTER
INDOORS IMMEDIATELY.
HA3STRUPSpecial weather statement, Aug 23, 11:46 PM PDT, 2 hours 39 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE STATION SAN DIEGO CA 11:45 PM TUE AUG 23 1988 THE SEVERE THUNDERSTORM WARNING AND A FLASH FLOOD WARNING CONTINUES FOR FOR EASTERN IMPERIAL COUNTY UNTIL 1AM AND THE FLASH FLOOD WATCH CONTINUES FOR ALL OF IMPERIAL COUNTY UNTIL 3AM. PALMDALE RADAR REPORTS HEAVY THUNDERSTORMS OVER EASTERN IMPERIAL COUNTY AND IS MOVING ACROSS STATE 78 AND S34 AND THE CHOCOLATE MOUNTAINS. THE STORMS ARE MOVING TOWARD THE SOUTHWEST 15 TO 20 MILES AN HOUR. IMPERIAL COUNTY OES HAS RECEIVED REPORTS OF VERY HEAVY RAIN DURING THE PAST HOUR JUST NORTH OF HIGHWAY 78 NEAR GLAMIS. REMEMBER WIND GUSTS TO 60 MPH WITH VISIBILITIES NEAR ZERO CAN BE EXPECTED WITH THESE THUNDERSTORMS. PEOPLE ARE REMINDED NEVER TO ATTEMPT CROSSING ROADWAYS COVERED WITH WATER. IF YOU ARE OUTSIDE AND SEVERE WEATHER APPROACHES...SEEK SHELTER INDOORS IMMEDIATELY. . HASTRUP
Special weather statement, Aug 24, 12:33 AM PDT, 1 hour 52 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE STATION SAN DIEGO CA 12:35 AM WED AUG 24 1988 THE SEVERE THUNDERSTORM WARNING AND A FLASH FLOOD WARNING CONTINUES FOR FOR EASTERN IMPERIAL COUNTY UNTIL 1AM AND THE FLASH FLOOD WATCH CONTINUES FOR ALL OF IMPERIAL COUNTY UNTIL 3AM. HEAVY THUNDERSTORMS CONTINUE IN EASTERN IMPERIAL COUNTY. DURING THE PAST 15 MINUTES IMPERIAL COUNTY OES REPORTS THUNDER AND LIGHTNING TO THE NORTH AND EAST OF THE CITY. THE WINDS ARE PICKING UP AND ARE VERY STRONG. REMEMBER WIND GUSTS TO 60 MPH WITH VISIBILITIES NEAR ZERO CAN BE EXPECTED WITH THESE THUNDERSTORMS. PEOPLE ARE REMINDED NEVER TO ATTEMPT CROSSING ROADWAYS COVERED WITH WATER. IF YOU ARE OUTSIDE AND SEVERE WEATHER APPROACHES...SEEK SHELTER INDOORS IMMEDIATELY. HASTRUP
Special weather statement, Aug 24, 1:29 AM PDT, 56 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE STATION SAN DIEGO CA 1:30 AM WED AUG 24 1988 ...THE FLASH FLOOD WARNING FOR EASTERN IMPERIAL COUNTY HAS BEEN EXTENDED TO 3:15 AM...THE FLASH FLOOD WATCH REMAINS IN EFFECT UNTIL 3AM FOR THE REMAINDER OF THE COUNTY. HEAVY THUNDERSTORMS CONTUNUE TO POUND IMPERIAL COUNTY...MAINLY STRONG WINDS AND FREQUENT LIGHTNING NORTH AND EAST OF EL CENTRO. THE STORMS ATE MOVING TOWARD THE WEST AND SOME OF THEM MAY EXTEND TO THE MOUNTAINS OF SAN DIEGO COUNTY AND BEYOND. REMEMBER WIND GUSTS TO 60 MPH WITH VISIBILITIES NEAR ZERO CAN BE EXPECTED WITH THESE THUNDERSTORMS. PEOPLE ARE REMINDED NEVER TO ATTEMPT CROSSING ROADWAYS COVERED WITH WATER. IF YOU ARE OUTSIDE AND SEVERE WEATHER APPROACHES...SEEK SHELTER INDOORS IMMEDIATELY. . HASTRUP
The office that day
Everything else NWS San Diego, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 23, 10:00 PM PDT | Flash Flood Warning | SGX | Imperial | 3 hr |
| Aug 23, 10:00 PM PDT | Severe Thunderstorm Warning | SGX | Imperial | 3 hr |
| Aug 24, 2:25 AM PDT | Severe Thunderstorm Warning | SGX | Imperial | 50 min |
Nearby
Flash Flood Warnings in California, 1988Every flash flood warning in 1988
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.