Alert archive / Texas / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 203, NWS Fort Worth, TX

August 18, 2001Lamar County, Texas

NWS Fort Worth, TX issued this severe thunderstorm warning at Aug 18, 2001, 5:34 PM CDT for Lamar County, Texas. It was in force for 56 min. 6 reports 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
Aug 18, 2001, 5:34 PM CDT (22:34 UTC)
Expired
Aug 18, 2001, 6:30 PM CDT
In force
56 min
Issued by
NWS Fort Worth, TX
Area
Whole counties; the outline is the Mesonet’s reconstruction

County Lamar County, TX

The radar

The Dallas/Ft Worth radar (KFWS), 202 km from the middle of the area, began a volume at 22:34 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
Aug 18, 5:45 PM CDTHail 0.75Paris, TX
Aug 18, 5:54 PM CDTHail 1Paris, TXOccurred in Reno.
Aug 18, 5:55 PM CDTThunderstorm WindRockford, TXA barn was blown into a road near Rockford.
Aug 18, 6:05 PM CDTHail 1Paris, TXOccurred in Reno.
Aug 18, 6:15 PM CDTThunderstorm Wind 50 MParis, TXMeasured at the ASOS site in Paris.
Aug 18, 6:15 PM CDTHail 1Paris, TX

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

Fort Worth, TX (KFWD), launched 12:00Z, 10.6 hours before the alert went out and 185 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, Fort Worth, TX at 12:00Z on 2001-08-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2614 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, Fort Worth, TX at 12:00Z on 2001-08-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 50 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
2614 J/kg
Mixed-layer CIN
-98 J/kg
Mixed-layer LCL
1016 m above ground
0-6 km bulk shear
15 kt
0-1 km storm-relative helicity
50 m²/s²
0-3 km storm-relative helicity
115 m²/s²
Significant tornado parameter
0.6
Supercell composite
1.7

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 Aug 18, 5:33 PM CDT, 1 minute earlier.

Area forecast discussion, Aug 18, 5:33 PM CDT, 1 minute before
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In the hours before

Special weather statement, Aug 18, 11:58 AM CDT, 5 hours 36 minutes before
TXZ091>095-100>107-115>123-129>135-141>148-156>162-174-175-182100-

HAZARDOUS WEATHER OUTLOOK FOR NORTH TEXAS
NATIONAL WEATHER SERVICE FORT WORTH TX
1158 AM CDT SAT AUG 18 2001

SCATTERED SHOWERS AND THUNDERSTORMS ARE EXPECTED ACROSS NORTH TEXAS
THIS AFTERNOON AND TONIGHT. THUNDERSTORMS WILL BE MOST NUMEROUS
ALONG AND SOUTH OF A HAMILTON...HILLSBORO...TO CANTON LINE.  CLOUD
TO GROUND LIGHTNING AND BRIEF HEAVY RAIN WILL BE POSSIBLE WITH ANY
THUNDERSTORMS THAT FORM.
Special weather statement, Aug 18, 4:05 PM CDT, 1 hour 29 minutes before
TXZ091>095-100>107-115>123-129>135-141>148-156>162-174-175-190200-

HAZARDOUS WEATHER OUTLOOK FOR NORTH TEXAS
NATIONAL WEATHER SERVICE FORT WORTH TX
405 PM CDT SAT AUG 18 2001

SCATTERED SHOWERS AND THUNDERSTORMS ARE EXPECTED ACROSS NORTH TEXAS
TONIGHT. THUNDERSTORMS WILL BE MOST NUMEROUS ALONG AND SOUTH OF A
GLEN ROSE...WAXAHACHIE...TO EMORY LINE. WIDESPREAD SEVERE
THUNDERSTORMS ARE NOT EXPECTED TONIGHT DUE TO WEAK LOW LEVEL
FORCING. HOWEVER...THE ATMOSPHERE WILL REMAIN QUITE UNSTABLE AND A
FEW STORMS COULD BECOME SEVERE. THE MAIN THREAT FROM THESE STORMS
WILL BE FROM LARGE HAIL AND DAMAGING DOWNBURST WINDS.
Local storm report, Aug 18, 4:57 PM CDT, 37 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE FORT WORTH TX
457 PM CDT SAT AUG 18 2001

TIME(CDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ...COUNTY LOCATION....

0329 PM    KEMP                      TX   0.75 INCH HAIL
08/18/01   KAUFMAN                        DIME SIZED HAIL IN KEMP.
                                          REPORTED BY SHERIFFS
                                          OFFICE.

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 18, 3:14 PM CDTSevere Thunderstorm WarningFWDKaufman, Van Zandt61 min
Aug 18, 3:35 PM CDTSevere Thunderstorm WarningFWDHenderson55 min
Aug 18, 5:24 PM CDTFlash Flood WarningFWDKaufman2 hr

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.