Alert archive / Texas / Severe Thunderstorm Watches in 2002

Severe Thunderstorm Watch 723

October 18, 2002Chaves County, Eddy County, Lea County, New Mexico; 17 counties in Texas

The Storm Prediction Center issued this severe thunderstorm watch at Oct 18, 2002, 12:30 PM MDT for Chaves County, Eddy County, Lea County, New Mexico; 17 counties in Texas. It was in force for 7 hr.

The area

The outline as issued.

The facts

Issued
Oct 18, 2002, 12:30 PM MDT (18:30 UTC)
Expired
Oct 18, 2002, 7:00 PM MDT
In force
7 hr
Issued by
the Storm Prediction Center

Counties Chaves County, NM, Eddy County, NM, Lea County, NM, Andrews County, TX, Cochran County, TX, Crane County, TX, Culberson County, TX, Dawson County, TX, Ector County, TX, Gaines County, TX, Hockley County, TX, Loving County, TX, Martin County, TX, Midland County, TX, Reeves County, TX, Terry County, TX, Upton County, TX, Ward County, TX, Winkler County, TX, Yoakum County, TX

The radar

The Midland/Odessa radar (KMAF), 135 km from the middle of the area, began a volume at 18:29 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.

Warnings issued inside it

9 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

IssuedProductOfficeCountiesLasted
Oct 18, 1:46 PM MDTSevere Thunderstorm WarningMAFEctor4 hr
Oct 18, 2:28 PM MDTSevere Thunderstorm WarningMAFEctor3 hr
Oct 18, 4:31 PM MDTSevere Thunderstorm WarningMAFWard3 hr
Oct 18, 4:31 PM MDTSevere Thunderstorm WarningMAFReeves, Ward3 hr
Oct 18, 5:43 PM MDTSevere Thunderstorm WarningMAFWard4 days
Oct 18, 5:43 PM MDTSevere Thunderstorm WarningMAFCrane, Ward4 days
Oct 18, 6:13 PM MDTSevere Thunderstorm WarningMAFEctor4 days
Oct 18, 6:13 PM MDTSevere Thunderstorm WarningMAFEctor, Midland4 days
Oct 18, 6:34 PM MDTFlash Flood WarningMAFEctor, Midland3 hr

The nearest sounding before it

Midland Regional, TX (KMAF), launched 12:00Z, 6.5 hours before the alert went out and 134 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, Midland Regional, TX at 12:00Z on 2002-10-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 139 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, Midland Regional, TX at 12:00Z on 2002-10-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 225 square meters per square second.19395878Sfc1 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
139 J/kg
Mixed-layer CIN
-45 J/kg
Mixed-layer LCL
630 m above ground
0-6 km bulk shear
41 kt
0-1 km storm-relative helicity
225 m²/s²
0-3 km storm-relative helicity
301 m²/s²
Significant tornado parameter
0.2
Supercell composite
1.3

Open this sounding in Storm Lab

Nearby

Severe Thunderstorm Watches in Texas, 2002Severe Thunderstorm Watches in New Mexico, 2002Every severe thunderstorm watch in 2002

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.