Alert archive / Texas / Severe Thunderstorm Warnings in 1999

Severe Thunderstorm Warning 43, NWS Midland/Odessa, TX

April 26, 1999Crane County, Pecos County, Upton County, Texas

NWS Midland/Odessa, TX issued this severe thunderstorm warning at Apr 26, 1999, 12:20 AM CDT for Crane County, Pecos County, Upton County, Texas. It was in force for 40 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: Apr 26, 1999, 12:20 AM CDT (05:20 UTC)
Expired: Apr 26, 1999, 1:00 AM CDT
In force: 40 min
Issued by: NWS Midland/Odessa, TX
Area: Whole counties; the outline is the Mesonet’s reconstruction

Counties Crane County, TX, Pecos County, TX, Upton County, TX

The radar

The Midland/Odessa radar (KMAF), 86 km from the middle of the area, began a volume at 05:20 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

Time	Report	Where	Remark
Apr 26, 12:43 AM CDT	Hail 1	Crane, TX	A short line of thunderstorms developed along the dryline with one of the strongest cells moving over the city of Crane.

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

Midland Regional, TX (KMAF), launched 00:00Z, 5.3 hours before the alert went out and 87 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: 16 J/kg
Mixed-layer CIN: -8 J/kg
Mixed-layer LCL: 2631 m above ground
0-6 km bulk shear: 49 kt
0-1 km storm-relative helicity: 12 m²/s²
0-3 km storm-relative helicity: 76 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 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 Apr 25, 9:08 PM CDT, 3 hours 12 minutes earlier.

Area forecast discussion, Apr 25, 9:08 PM CDT, 3 hours 12 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE MIDLAND TX
908 PM CDT SUN APR 25 1999

APPEARS DRYLINE IS ON A LINE FROM JUST E OF LBB...TO JUST W OF MAF
AND FST AND SLOWLY RETREATING.  MAF DEWPOINT HAS RISEN 9 F IN THE
LAST HOUR.  WINDS CURRENTLY SOUTHEAST ACROSS ERN THIRD OF CWA.  00Z
RUC INDICATES THAT DRYLINE WILL RETREAT AS FAR W AS INK BY
06Z...THEN MOVE BACK W AND OUT OF CWA BY 12Z.  00Z RUC ALSO SUGGESTS
THAT 85H RH VALUES WILL INCREASE TO NEAR 100 PERCENT ACROSS SE ZONES
BY 06Z.  FOG SATELLITE IMAGERY INDICATES SOME LOW CLDS ALONG THE
PECOS/TERRELL COUNTY LINE ATTM.  WILL MAKE MINOR CHANGES TO FORECAST
PACKAGE.  WILL UPDATE WIND FCST ACROSS ERN THIRD OF AREA AND TERM
P/C EXTREME E AND SE.  WILL BUMP TEMPS UP A TAD ACROSS AREAS EAST OF
DRYLINE.  WOULD ALSO RECOMMEND LOWERING FCST WINDS IN EDDY/LEA
COUNTIES AS LATEST OBS INDICATE DECOUPLING OCURRING.  WZIS WITHING
MINUTES.

SD

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 26, 12:00 AM CDT	Tornado Warning	MAF	Crane, Upton	45 min
Apr 26, 12:58 AM CDT	Severe Thunderstorm Warning	MAF	Upton	32 min
Apr 26, 2:13 AM CDT	Severe Thunderstorm Warning	MAF	Pecos, Terrell	62 min
Apr 26, 3:06 AM CDT	Flash Flood Warning	MAF	Terrell	114 min

Nearby

Severe Thunderstorm Warnings in Texas, 1999 Every 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.