Alert archive / Texas / Flash Flood Warnings in 1993

Flash Flood Warning 7, NWS Austin/San Antonio, TX

May 5, 1993Jackson County, Texas

NWS Austin/San Antonio, TX issued this flash flood warning at May 5, 1993, 8:41 PM CDT for Jackson County, Texas. It was in force for 3 hr.

The area

The counties it named.

The facts

Issued: May 5, 1993, 8:41 PM CDT (01:41 UTC)
Expired: May 5, 1993, 11:45 PM CDT
In force: 3 hr
Issued by: NWS Austin/San Antonio, TX
Area: Whole counties

County Jackson County, TX

The radar

The Houston radar (KHGX), 156 km from the middle of the area, began a volume at 01:41 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

Corpus Christi, TX (KCRP), launched 00:00Z, 1.7 hours before the alert went out and 155 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: 2426 J/kg
Mixed-layer CIN: -4 J/kg
Mixed-layer LCL: 554 m above ground
0-6 km bulk shear: 40 kt
0-1 km storm-relative helicity: 204 m²/s²
0-3 km storm-relative helicity: 372 m²/s²
Significant tornado parameter: 2.9
Supercell composite: 16.9

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KVCT 060142
FFWVCT
TXC239-060445-
 
BULLETIN - EBS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE VICTORIA TX
841 PM CDT WED MAY 5 1993
 
THE NATIONAL WEATHER SERVICE IN VICTORIA HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL 1145 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS......
 
IN SOUTH CENTRAL TEXAS
 
   ...JACKSON COUNTY
 
AT 840 CDT VICTORIA RADAR SHOWS STRONG THUNDERSTORMS AND RAINSHOWERS
FROM WEST OF A LINE FROM BAY CITY TO MATAGORDA TO CORPUS CHRISTI.
THESE THUNDERSTORMS ARE MOVING EAST AT 10 MILES AN HOUR.
 
REPORTS OF STREET FLOODING AND WATER IN SOME HOMES IN LOW LYING
AREAS.
 
 
 
BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE
THE DANGERS OF FLOODS AND FLASH FLOODS.  IF FLASH FLOODING IS
OBSERVED...ACT QUICKLY.  MOVE UP TO ESCAPE FLOOD WATERS.  DO
NOT STAY IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING.
 
DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY.  THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO
CROSS SAFELY.  VEHICLES CAUGHT IN RISING WATER SHOULD BE
ABANDONED QUICKLY.  MOVE TO HIGHER GROUND.
 
A FLASH FLOOD WARNING MEANS THAT FLOODING IS OCCURRING OR IS
IMMINENT.  MOST FLASH FLOOD DEATHS OCCUR IN AUTOMOBILES.  DO NOT
ATTEMPT TO CROSS BRIDGES...DIPS...OR LOW SPOTS IF WATER COVERS
THE ROADWAY.  NEVER TRY TO CROSS A FLOWING STREAM...EVEN A SMALL
ONE...ON FOOT.  TO ESCAPE RISING WATER MOVE UP TO HIGHER GROUND.

The office that day

Everything else NWS Austin/San Antonio, TX issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 5, 7:07 PM CDT	Severe Thunderstorm Warning	EWX	Victoria	68 min
May 5, 7:22 PM CDT	Severe Thunderstorm Warning	EWX	Webb	68 min
May 5, 11:06 PM CDT	Flash Flood Warning	EWX	Jackson, Victoria	4 hr

Nearby

Flash Flood Warnings in Texas, 1993 Every flash flood warning in 1993

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.