Flash Flood Warning 49, NWS San Angelo, TX

Issued

Jun 12, 1999, 12:16 AM CDT (05:16 UTC)

Expired

Jun 12, 1999, 2:45 AM CDT

In force

2 hr

Issued by

NWS San Angelo, TX

Area

Whole counties

County Nolan County, TX

The San Angelo radar (KSJT), 104 km from the middle of the area, began a volume at 05:19 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.

000 
TTAA00 KSJT 120516
FFWSJT
TXC353-120745-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SAN ANGELO TX
1216 AM CDT SAT JUN 12 1999

THE NATIONAL WEATHER SERVICE IN SAN ANGELO HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  NOLAN COUNTY IN NORTHWESTERN TEXAS

* UNTIL 245 AM CDT

* AT 1214 AM CDT... NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  A THUNDERSTORM WITH VERY HEAVY RAIN IN CENTRAL AND SOUTHERN NOLAN
  COUNTY...MOVING SLOWLY SOUTHEAST.

* RAINFALL OF UP TO 3 INCHES HAS FALLEN FROM THIS STORM SINCE 1045
  PM. CREEKS AND LOW WATER CROSSINGS IN THE AREA ARE LIKELY FLOODED.

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGER OF FLOODING. DO NOT DRIVVE ACROSS FLOODED ROADS.

PB

NWS San Angelo, TX wrote its last area forecast discussion before this flash flood warning went out at Jun 11, 8:48 PM CDT, 3 hours 28 minutes earlier.

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN ANGELO TX
848 PM CDT FRI JUN 11 1999

WILL UPDATE ZONES TO REFLECT THE NEW SEVERE TSTM WATCH. REMAINDER OF
THE FORECAST LOOKS OK. NORTHERN AREA OF PRECIPITATION WHICH IS JUST
NORTHWEST OF THE CWA APPEARS TO BE DRIVEN BY SHORTWAVE ENERGY WHICH
WILL MOVE NORTHEAST ACROSS THE PANHANDLE. THE SOUTHERN AREA...WHICH
IS JUST WEST OF THE EDWARDS PLATEAU APPEARS TO BE MORE OF A BOUNDARY
DRIVEN EVENT WITH AN EXITING AREA OF UPPER LEVEL SUPPORT.
NEVERTHELESS...LOOKS AS IF THE TWO AREAS WILL BEGIN TO FILL AND
SUPPORT CURRENT POPS.
INSTABILITIES QUITE IMPRESSIVE WITH CAPES OF ABOUT 4000 J/KG OVER THE
WESTERN BIG COUNTRY. THIS WILL SUPPORT SEVERE ACTIVITY WHICH WILL
BEGIN MOVING INTO THIS AREA WITHIN THE NEXT COUPLE OF HOURS. LLJ TO
INTENSIFY SOME OVER THE AREA LATER TONIGHT AND THIS SHOULD SUPPORT
THE OVERNIGHT SEVERE EVENT. ALREADY SEEING SOME CAPE INDUCED ROTATION
WITH SOME OF THE STORMS SO PERHAPS A TORNADO OR TWO WILL BE POSSIBLE.
WILL HOLD TEMPS AND WINDS IN CHECK FOR NOW WITH NO CHANGES NEEDED.
WILL SEND UPDATED ZONES AFTER NEW WATCH IS RECEIVED.

21

Flash Flood Warnings in Texas, 1999Every flash flood warning in 1999

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.