Alert archive / Texas / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 100, NWS Houston/Galveston, TX

August 27, 2002Houston County, Texas

NWS Houston/Galveston, TX issued this severe thunderstorm warning at Aug 27, 2002, 12:38 AM CDT for Houston County, Texas. It was in force for 11 hr. 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
Aug 27, 2002, 12:38 AM CDT (05:38 UTC)
Expired
Aug 27, 2002, 11:15 AM CDT
In force
11 hr
Issued by
NWS Houston/Galveston, TX
Area
Counties, with a storm outline in the text

County Houston County, TX

The radar

The Shreveport radar (KSHV), 195 km from the middle of the area, began a volume at 05:40 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 27, 12:55 AM CDTThunderstorm WindKennard, TXTrees down in the Davy Crockett National Forest.

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

Shreveport, LA (KSHV), launched 00:00Z, 5.6 hours before the alert went out and 204 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, Shreveport, LA at 00:00Z on 2002-08-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1112 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, Shreveport, LA at 00:00Z on 2002-08-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 21 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
1112 J/kg
Mixed-layer CIN
-7 J/kg
Mixed-layer LCL
1861 m above ground
0-6 km bulk shear
35 kt
0-1 km storm-relative helicity
21 m²/s²
0-3 km storm-relative helicity
110 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.4

Open this sounding in Storm Lab

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 Houston/Galveston, TX wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 26, 11:30 PM CDT, 1 hour 8 minutes earlier.

Area forecast discussion, Aug 26, 11:30 PM CDT, 1 hour 8 minutes before
SOUTHEAST TEXAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
1130 PM CDT MON AUG 26 2002

UPDATED REMAINING PORTION OF 1ST PERIOD TO REFLECT CONTINUING CHANCE
OF SHRA/TSRA NE ZONES. LOWERED POPS SE ZONES DUE TO THE AREA STABILIZING
FROM PREVIOUS CLUSTER OF STORMS (EARLIER THIS EVENING).

37/45

.HGX...NONE.

CLL BB 075/097 075/097 075 132
IAH BB 076/095 076/095 076 232
GLS BB 080/092 080/090 079 222

The office that day

Everything else NWS Houston/Galveston, TX issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 26, 7:32 PM CDTSevere Thunderstorm WarningHGXChambers58 min
Aug 26, 7:37 PM CDTSpecial Marine WarningHGX53 min
Aug 26, 7:59 PM CDTSevere Thunderstorm WarningHGXGalveston61 min
Aug 26, 8:02 PM CDTSevere Thunderstorm WarningHGXPolk58 min
Aug 26, 8:12 PM CDTSevere Thunderstorm WarningHGXChambers63 min
Aug 26, 8:24 PM CDTSpecial Marine WarningHGX66 min
Aug 26, 8:30 PM CDTSevere Thunderstorm WarningHGXGalveston75 min
Aug 26, 8:52 PM CDTSevere Thunderstorm WarningHGXTrinity68 min
Aug 26, 9:09 PM CDTSevere Thunderstorm WarningHGXPolk3 hr
Aug 26, 9:27 PM CDTSpecial Marine WarningHGX2 hr
Aug 26, 9:27 PM CDTSpecial Marine WarningHGX2 hr
Aug 26, 11:34 PM CDTSevere Thunderstorm WarningHGXHouston116 min
Aug 27, 10:23 AM CDTSevere Thunderstorm WarningHGXHouston97 min
Aug 27, 10:59 AM CDTSevere Thunderstorm WarningHGXTrinity76 min
Aug 27, 11:11 AM CDTSevere Thunderstorm WarningHGXPolk3 hr
Aug 27, 1:03 PM CDTSpecial Marine WarningHGX117 min
Aug 27, 1:18 PM CDTSevere Thunderstorm WarningHGXChambers, Liberty57 min
Aug 27, 1:34 PM CDTSevere Thunderstorm WarningHGXHarris86 min
Aug 27, 2:20 PM CDTSevere Thunderstorm WarningHGXGalveston, Harris115 min
Aug 27, 2:53 PM CDTSpecial Marine WarningHGX67 min
Aug 27, 3:31 PM CDTSevere Thunderstorm WarningHGXBrazoria119 min
Aug 27, 3:44 PM CDTSpecial Marine WarningHGX2 hr
Aug 27, 4:29 PM CDTSevere Thunderstorm WarningHGXBrazoria, Matagorda23 days
Aug 27, 4:36 PM CDTSpecial Marine WarningHGX114 min

Nearby

Severe Thunderstorm Warnings in Texas, 2002Every severe thunderstorm warning 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.