Alert archive / Texas / Severe Thunderstorm Warnings in 1999

Severe Thunderstorm Warning 161, NWS Midland/Odessa, TX

May 31, 1999Terrell County, Texas

NWS Midland/Odessa, TX issued this severe thunderstorm warning at May 31, 1999, 8:45 PM CDT for Terrell County, Texas. It was in force for 45 min. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
May 31, 1999, 8:45 PM CDT (01:45 UTC)
Expired
May 31, 1999, 9:30 PM CDT
In force
45 min
Issued by
NWS Midland/Odessa, TX
Area
Whole counties; the outline is the Mesonet’s reconstruction

County Terrell County, TX

The radar

The Midland/Odessa radar (KMAF), 191 km from the middle of the area, began a volume at 01:48 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.

What was reported inside it

TimeReportWhereRemark
May 31, 8:58 PM CDTHail 1.5Dryden, TXStorm that cross Highway 349 moved northeast to the Terrell Gas Plant.

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The nearest sounding before it

Del Rio, TX (KDRT), launched 00:00Z, 1.8 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 1999-06-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1350 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 1999-06-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 8 square meters per square second.193958Sfc1 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
1350 J/kg
Mixed-layer CIN
-214 J/kg
Mixed-layer LCL
2595 m above ground
0-6 km bulk shear
46 kt
0-1 km storm-relative helicity
8 m²/s²
0-3 km storm-relative helicity
92 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

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 May 31, 2:31 PM CDT, 6 hours 14 minutes earlier.

Area forecast discussion, May 31, 2:31 PM CDT, 6 hours 14 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE MIDLAND TX
231 PM CDT MON MAY 31 1999

DRYLINE EVOLVING EWD ATTM UNDERNEATH RIDGE PATTERN ALOFT. DWPNTS
INTO THE 30S AT KINK WHILE M50S KMAF. DRYLINE TO BE POSITIONED ACROSS
ERN CWA LATE AFTERNOON AS INTENSE SURFACE HEATING CONTINUES TO MIX
DRIER AIR TO THE SURFACE. ETA DEPICTS WEAKNESS IN CINH FIELDS ALONG/E
OF DRYLINE WHICH IS TO BE IN ERN CWA COINCIDENT WITH CAPES ON ORDER
OF 1000-1500 J/KG...ERGO, ISOLD/WDLY SCT POPS E. MTN TSTMS APPEAR
LESS FAVORABLE TODAY AS CONDITIONS DRIER/MORE STABLE THAN PAST FEW
DAYS. HOWEVER WILL INCLUDE ISOLD POPS AS VISIBLE IMAGERY SHOWING CU
FORMING AND FIRE WX OBS FROM BIG BEND INDICATE DWPNTS STILL IN 40S.
WARM PATTERN TO PERSIST ACROSS W TX/SE NM PER MID LEVEL RIDGE AND 7H
TEMPS OF 13-16 DEGREES C...WILL CONTINUE TREND OF DRY FCST THRU
WEDNESDAY. WILL GO WITH GENERALLY PC SKIES AS SW FLOW ALOFT CONTINUES
TO BRING MID/UPPER LEVEL PACIFIC MSTR INTO REGION. ATTM WOULD INCLUDE
SLIGHT CHC POPS IN EXTENDED AS UPPER TROF OVER SW USA APPROACHES
BACKING FLOW AND BRINGING MSTR BACK W WITH SOME COOLING IN MID LEVEL
NOTED. WZIS.

MAF 67/98/66/99  -/-/-/-
CNM 67/99/65/98  -/-/-/-
MRF 56/90/57/90  -/-/-/-
P07 68/97/69/97  -/-/-/-

GPM

The office that day

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

IssuedProductOfficeCountiesLasted
May 31, 7:08 PM CDTTornado WarningMAFGlasscock47 min
May 31, 7:25 PM CDTTornado WarningMAFTerrell50 min
May 31, 8:06 PM CDTSevere Thunderstorm WarningMAFPecos39 min
May 31, 9:08 PM CDTSevere Thunderstorm WarningMAFPecos52 min
May 31, 9:18 PM CDTFlash Flood WarningMAFPecos, Terrell3 hr
May 31, 9:26 PM CDTSevere Thunderstorm WarningMAFTerrell49 min
May 31, 10:13 PM CDTSevere Thunderstorm WarningMAFPecos, Terrell62 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.