Alert archive / Texas / Flash Flood Warnings in 1991

Flash Flood Warning 66, NWS Austin/San Antonio, TX

December 20, 1991Gillespie County, Texas

NWS Austin/San Antonio, TX issued this flash flood warning at Dec 20, 1991, 7:50 AM CST for Gillespie County, Texas. It was in force for 2 hr.

The area

The counties it named.

The facts

Issued
Dec 20, 1991, 7:50 AM CST (13:50 UTC)
Expired
Dec 20, 1991, 10:00 AM CST
In force
2 hr
Issued by
NWS Austin/San Antonio, TX
Area
Whole counties

County Gillespie County, TX

The nearest sounding before it

Del Rio, TX (KDRT), launched 12:00Z, 1.8 hours before the alert went out and 211 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-pSkew-T log-p diagram, Del Rio, TX at 12:00Z on 1991-12-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Del Rio, TX at 12:00Z on 1991-12-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 152 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
638 m above ground
0-6 km bulk shear
56 kt
0-1 km storm-relative helicity
152 m²/s²
0-3 km storm-relative helicity
142 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

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.

In the hours before

Local storm report, Dec 20, 6:27 AM CST, 1 hour 23 minutes before
LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN TX
625 AM CST FRI DEC 20 1991

TIME CST     COUNTY           EVENT

 0547        LLANO/GILLESPIE  OVERNIGHT RAINFALL TOTAL 4.50
 0619        GILLESPIE
       FM 783 AND 1631 CAVE CK RD CLOSED.
                              WATER 3 FEET OVER BRIDGE AT LUCKEN-
                              BACH AND 5 FEET OVER BRIDGE AT CAVE
                              CREEK.

AUS/JVD

The office that day

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

IssuedProductOfficeCountiesLasted
Dec 19, 6:03 PM CSTFlash Flood WarningEWXBexar, Comal3 hr
Dec 19, 8:29 PM CSTFlash Flood WarningEWXBandera, Kendall, Kerr10 hr
Dec 19, 8:52 PM CSTFlash Flood WarningEWXBexar3 hr
Dec 19, 10:54 PM CSTFlash Flood WarningEWXEdwards, Real7 hr
Dec 19, 11:56 PM CSTFlash Flood WarningEWXKinney, Uvalde7 hr
Dec 20, 3:05 AM CSTFlash Flood WarningEWXBexar, Medina6 hr
Dec 20, 4:18 AM CSTFlash Flood WarningEWXGillespie, Llano4 hr
Dec 20, 4:18 AM CSTFlash Flood WarningEWXBurnet, Lampasas4 hr
Dec 20, 6:17 AM CSTFlash Flood WarningEWXBandera, Kendall, Kerr3 hr
Dec 20, 7:50 AM CSTFlash Flood WarningEWXBurnet, Lampasas, Llano, Mills, San Saba2 hr
Dec 20, 8:43 AM CSTFlash Flood WarningEWXBandera, Bexar, Medina5 hr
Dec 20, 8:43 AM CSTFlash Flood WarningEWXKendall, Kerr5 hr
Dec 20, 10:01 AM CSTFlash Flood WarningEWXBurnet, Lampasas, Mills, San Saba4 hr
Dec 20, 10:01 AM CSTFlash Flood WarningEWXGillespie, Llano4 hr
Dec 20, 1:48 PM CSTFlash Flood WarningEWXBandera, Kendall, Kerr6 hr
Dec 20, 4:52 PM CSTFlash Flood WarningEWXHays, Travis3 hr
Dec 20, 4:52 PM CSTFlash Flood WarningEWXWilliamson3 hr
Dec 20, 5:54 PM CSTFlash Flood WarningEWXGillespie2 hr
Dec 20, 5:54 PM CSTFlash Flood WarningEWXLampasas, Mills2 hr

Nearby

Flash Flood Warnings in Texas, 1991Every flash flood warning in 1991

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.