Alert archive / Texas / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 204, NWS Fort Worth, TX

September 7, 2001Montague County, Texas

NWS Fort Worth, TX issued this severe thunderstorm warning at Sep 7, 2001, 9:57 PM CDT for Montague County, Texas. It was in force for 48 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
Sep 7, 2001, 9:57 PM CDT (02:57 UTC)
Expired
Sep 7, 2001, 10:45 PM CDT
In force
48 min
Issued by
NWS Fort Worth, TX
Area
Whole counties; the outline is the Mesonet’s reconstruction

County Montague County, TX

The radar

The Dallas/Ft Worth radar (KFWS), 129 km from the middle of the area, began a volume at 03:06 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
Sep 7, 10:34 PM CDTThunderstorm Wind 52 ESNacona, TXA fruit stand was blown over and shingles were blown off some roofs.

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

Norman, OK (KOUN), launched 00:00Z, 3.0 hours before the alert went out and 174 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, Norman, OK at 00:00Z on 2001-09-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3154 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, Norman, OK at 00:00Z on 2001-09-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 156 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
3154 J/kg
Mixed-layer CIN
-21 J/kg
Mixed-layer LCL
1262 m above ground
0-6 km bulk shear
57 kt
0-1 km storm-relative helicity
156 m²/s²
0-3 km storm-relative helicity
166 m²/s²
Significant tornado parameter
2.3
Supercell composite
17.3

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 Fort Worth, TX wrote its last area forecast discussion before this severe thunderstorm warning went out at Sep 7, 8:55 PM CDT, 1 hour 2 minutes earlier.

Area forecast discussion, Sep 7, 8:55 PM CDT, 1 hour 2 minutes before
AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE FORT WORTH TX
855 PM CDT FRI SEP 7 2001

COLD FRONT CONTINUES ITS SOUTHWARD MOVEMENT...AND IS MOVING THROUGH
KSPS AT 01Z. TEMPERATURES HAVE DROPPED 5 TO 10 DEGREES BEHIND THE
FRONT...AND WILL BRING COOLER TEMPERATURES INTO THE NORTHWESTERN
ZONES THROUGH THE EVENING. AT PRESENT SPEED...FRONT WILL BE BETWEEN
BOWIE AND GAINESVILLE BY 04Z. THUNDERSTORMS HAVE FINALLY CROSSED
THE RED RIVER...ALONG THE FRONT...BETWEEN WICHITA FALLS AND BOWIE.
00Z FWD SOUNDING SHOWS THE CAP STILL IN PLACE...AND STRONGER THAN
IT WAS AT 12Z. DESPITE THE CAP...A FEW THUNDERSTORMS SHOULD AFFECT
AT LEAST THE COUNTIES ALONG THE RED RIVER.

WITH CURRENT POSITION OF FRONT...WILL LOWER MINIMUM TEMPERATURES IN
THE NORTHWEST...AND TWEAK OVERNIGHT LOWS ALONG THE RIVER.

84

.FWD...NONE.

The office that day

Everything else NWS Fort Worth, TX issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Sep 7, 10:44 PM CDTSevere Thunderstorm WarningFWDMontague46 min
Sep 7, 11:16 PM CDTSevere Thunderstorm WarningFWDCooke59 min
Sep 8, 12:41 AM CDTSevere Thunderstorm WarningFWDCooke64 min
Sep 8, 6:59 PM CDTSevere Thunderstorm WarningFWDStephens, Young61 min

Nearby

Severe Thunderstorm Warnings in Texas, 2001Every severe thunderstorm warning in 2001

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.