Alert archive / Texas / Severe Thunderstorm Warnings in 1999

Severe Thunderstorm Warning 12, NWS Midland/Odessa, TX

March 24, 1999Terrell County, Texas

NWS Midland/Odessa, TX issued this severe thunderstorm warning at Mar 24, 1999, 9:08 PM CST for Terrell County, Texas. It was in force for 47 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Mar 24, 1999, 9:08 PM CST (03:08 UTC)
Expired
Mar 24, 1999, 9:55 PM CST
In force
47 min
Issued by
NWS Midland/Odessa, TX
Area
Whole counties

County Terrell County, TX

The radar

The Midland/Odessa radar (KMAF), 191 km from the middle of the area, began a volume at 03:10 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

Del Rio, TX (KDRT), launched 00:00Z, 3.1 hours before the alert went out and 153 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 00:00Z on 1999-03-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2335 joules per kilogram.LCLLFCEL10008507005003002001001 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 00:00Z on 1999-03-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 62 square meters per square second.1939Sfc1 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
2335 J/kg
Mixed-layer CIN
-11 J/kg
Mixed-layer LCL
956 m above ground
0-6 km bulk shear
48 kt
0-1 km storm-relative helicity
62 m²/s²
0-3 km storm-relative helicity
86 m²/s²
Significant tornado parameter
1.1
Supercell composite
5.8

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 severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Midland/Odessa, TX wrote its last area forecast discussion before this severe thunderstorm warning went out at Mar 24, 9:00 PM CST, 8 minutes earlier.

Area forecast discussion, Mar 24, 9:00 PM CST, 8 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE MIDLAND TX
900 PM CST WED MAR 24 1999

MAF RADAR INDICATING TSRA FROM JUST S OF SHEFFIELD EWD TO SONORA.
THIS LINE HAS REMIAINED NEARLY STATIONARY (PERHAPS DRIFTING S)
DURING THE PAST HOUR.  THE LINE CONTINUES TO BUILD WWD INTO NRN
TERRELL COUNTY.  LOW CLDS MOVING INTO THE FA FROM THE NE...WITH
OVERCAST CONDITIONS GENERALLY NE OF HWY 87 ATTM.  00Z RUC...SEEMS TO
HAVE A PRETTY GOOD HANDLE ON LOW CLDS AND WIND.  APPEARS WINDS MAY
STAY UP UNTIL AT LEAST MIDNIGHT...SO WILL INCREASE WINDS ACROSS
PORTIONS OF THE AREA.  UPDATED ZONES ON THE WAY.

SD

The office that day

Everything else NWS Midland/Odessa, TX issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Mar 24, 10:31 PM CSTFlash Flood WarningMAFTerrell3 hr
Mar 24, 10:37 PM CSTSevere Thunderstorm WarningMAFTerrell63 min

Nearby

Severe Thunderstorm Warnings in Texas, 1999Every severe thunderstorm warning in 1999

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.