Alert archive / Texas / Flash Flood Warnings in 1997

Flash Flood Warning 14, NWS San Angelo, TX

May 9, 1997Nolan County, Taylor County, Texas

NWS San Angelo, TX issued this flash flood warning at May 9, 1997, 12:22 AM CDT for Nolan County, Taylor County, Texas. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: May 9, 1997, 12:22 AM CDT (05:22 UTC)
Expired: May 9, 1997, 3:00 AM CDT
In force: 3 hr
Issued by: NWS San Angelo, TX
Area: Whole counties

Counties Nolan County, TX, Taylor County, TX

The radar

The Dyess AFB radar (KDYX), 88 km from the middle of the area, began a volume at 05:24 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

Midland Regional, TX (KMAF), launched 00:00Z, 5.4 hours before the alert went out and 197 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: 2593 J/kg
Mixed-layer CIN: -3 J/kg
Mixed-layer LCL: 1718 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: 5 m²/s²
0-3 km storm-relative helicity: 41 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 1.8

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

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.

NWS San Angelo, TX wrote its last area forecast discussion before this flash flood warning went out at May 8, 8:55 PM CDT, 3 hours 27 minutes earlier.

Area forecast discussion, May 8, 8:55 PM CDT, 3 hours 27 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN ANGELO TX
855 PM CDT THU MAY 8 1997

1Z SURFACE ANALYSIS INDICATED SLOW MOVING COLD FRONT FROM SOUTH OF
LUBBOCK TO WICHITA FALLS...WITH SEVERE THUNDERSTORMS DEVELOPING ALONG
IT AND SURFACE TROUGH JUST AHEAD.

21Z RUC INDICATED FRONT TO SLOWLY MOVE SOUTHWARD TO ABILENE AROUND
MIDNIGHT...AND SAN ANGELO AROUND 3 AM. THIS LOOKS REASONABLE AS
OUTFLOW FROM STORMS ALONG RED RIVER MAY HELP TO REINFORCE THE NEARLY
STATIONARY FRONT.

FORECAST OVERALL LOOKS GOOD. HEAVY RAINS REMAIN POSSIBILITY WITH
P0WS AT 150 PERCENT OF NORMAL. COLD FRONT AND THUNDERSTORMS
OUTFLOW BOUNDARIES FROM STORMS MOVING EAST FROM PERMIAN BASIN
WILL ACT AS FOCUSING MECHANISMS FOR PRECIPITATION. GRADIENT REMAINS
LIGHT TO SOUTH OF FRONT...SO WIND SPEEDS CAN BE REDUCED FOR FT WORTH
ZONES. EXPECT WINDS TO PICK UP BY SUNRISE AS FRONT MOVES SLOWLY
SOUTH AND GRADIENT TIGHTENS.

04

The office that day

Everything else NWS San Angelo, TX issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 8, 9:57 PM CDT	Severe Thunderstorm Warning	SJT	Sterling	58 min
May 8, 11:02 PM CDT	Severe Thunderstorm Warning	SJT	Tom Green	33 min
May 8, 11:47 PM CDT	Flash Flood Warning	SJT	Fisher	3 hr
May 9, 2:09 AM CDT	Severe Thunderstorm Warning	SJT	Brown, Coleman	61 min

Nearby

Flash Flood Warnings in Texas, 1997 Every flash flood warning in 1997

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.