Alert archive / Texas / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 103, NWS Houston/Galveston, TX

May 28, 1997Grimes County, Montgomery County, Walker County, Texas

NWS Houston/Galveston, TX issued this severe thunderstorm warning at May 28, 1997, 12:23 AM CDT for Grimes County, Montgomery County, Walker County, Texas. It was in force for 67 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
May 28, 1997, 12:23 AM CDT (05:23 UTC)
Expired
May 28, 1997, 1:30 AM CDT
In force
67 min
Issued by
NWS Houston/Galveston, TX
Area
Whole counties

Counties Grimes County, TX, Montgomery County, TX, Walker County, TX

The radar

The Houston radar (KHGX), 131 km from the middle of the area, began a volume at 05:25 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.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
May 27, 7:00 PM CDTTornado WatchSPC6 hr

The nearest sounding before it

Lake Charles Mun, LA (KLCH), launched 00:00Z, 5.4 hours before the alert went out and 243 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, Lake Charles Mun, LA at 00:00Z on 1997-05-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3458 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, Lake Charles Mun, LA at 00:00Z on 1997-05-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 19 square meters per square second.1939Sfc1 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
3458 J/kg
Mixed-layer CIN
-21 J/kg
Mixed-layer LCL
843 m above ground
0-6 km bulk shear
23 kt
0-1 km storm-relative helicity
19 m²/s²
0-3 km storm-relative helicity
26 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.1

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 Houston/Galveston, TX wrote its last area forecast discussion before this severe thunderstorm warning went out at May 27, 8:33 PM CDT, 3 hours 50 minutes earlier.

Area forecast discussion, May 27, 8:33 PM CDT, 3 hours 50 minutes before
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In the hours before

Special weather statement, May 27, 6:50 PM CDT, 5 hours 33 minutes before
TXZ163-164-176>179-195>199-210-211-280600-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
650 PM CDT TUE MAY 27 1997

...TORNADO WATCH IN EFFECT FOR NORTHERN PORTIONS OF SOUTHEAST TEXAS
UNTIL 100 AM...

THE NATIONAL WEATHER SERVICE HAS ISSUED A TORNADO WATCH FOR THE
FOLLOWING COUNTIES IN THE NORTHERN PORTIONS OF SOUTHEAST TEXAS...

BRAZOS...BURLESON...MADISON...GRIMES...WALKER...MONTGOMERY...
HOUSTON...TRINITY...SAN JACINTO...AND POLK.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1000 PM FOR WASHINGTON...
AUSTIN...AND COLORADO COUNTIES.

SHOWERS AND THUNDERSTORMS CONTINUE TO DEVELOP TO THE NORTH AND WEST
OF SOUTHEAST TEXAS ACROSS A VERY UNSTABLE AIRMASS.  THESE STORMS WILL
CONTINUE TO SLOWLY PROGRESS TO THE SOUTH AND SOUTH SOUTHEAST TOWARD
SOUTHEAST TEXAS...AND MAY DEVELOP INTO A SQUALL LINE AFTER SUNSET.
THUNDERSTORMS FROM THIS SAME SYSTEM HAVE A HISTORY OF PRODUCING LARGE
HAIL...DAMAGING WINDS AND TORNADOES BETWEEN AUSTIN AND WACO RESULTING
IN NUMEROUS INJURIES AND FATALITIES.  THE THUNDERSTORMS THAT DEVELOP
ACROSS SOUTHEAST TEXAS HAVE THE POTENTIAL TO BE AS SEVERE AS THESE
STORMS EARLIER TODAY.

LARGE HAIL AND DAMAGING WINDS ARE THE GREATEST THREAT WITH THIS
EVENINGS THUNDERSTORMS.  CONDITIONS ARE ALSO FAVORABLE FOR TORNADOES
TO DEVELOP IN AND NEAR THE WATCH AREAS.

IF SEVERE WEATHER IS OBSERVED...PLEASE CONTACT YOUR LOCAL LAW
ENFORCEMENT OFFICE IMMEDIATELY AND ASK THEM TO RELAY YOUR REPORT TO
THE HOUSTON/GALVESTON NATIONAL WEATHER SERVICE OFFICE.

STAY TUNED TO NOAA WEATHER RADIO OR OTHER WEATHER NEWS SOURCES FOR
FURTHER UPDATES AND POSSIBLE WARNINGS.
Special weather statement, May 27, 8:43 PM CDT, 3 hours 40 minutes before
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Special weather statement, May 27, 8:44 PM CDT, 3 hours 39 minutes before
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Special weather statement, May 27, 10:39 PM CDT, 1 hour 44 minutes before
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Special weather statement, May 27, 10:40 PM CDT, 1 hour 43 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
May 27, 7:16 PM CDTSevere Thunderstorm WarningHGXBrazos, Madison59 min
May 27, 7:49 PM CDTSevere Thunderstorm WarningHGXGrimes56 min
May 27, 7:57 PM CDTSevere Thunderstorm WarningHGXWalker63 min
May 27, 11:22 PM CDTSevere Thunderstorm WarningHGXGrimes53 min
May 27, 11:40 PM CDTFlash Flood WarningHGXGrimes, Walker2 hr
May 28, 12:43 AM CDTSevere Thunderstorm WarningHGXHouston62 min
May 28, 10:43 AM CDTSevere Thunderstorm WarningHGXHarris62 min
May 28, 11:44 AM CDTSevere Thunderstorm WarningHGXHarris61 min
May 28, 12:56 PM CDTSevere Thunderstorm WarningHGXMontgomery64 min
May 28, 1:48 PM CDTSevere Thunderstorm WarningHGXGalveston57 min
May 28, 1:58 PM CDTSevere Thunderstorm WarningHGXSan Jacinto62 min
May 28, 2:18 PM CDTSevere Thunderstorm WarningHGXWaller57 min
May 28, 2:52 PM CDTSevere Thunderstorm WarningHGXAustin68 min
May 28, 2:59 PM CDTTornado WarningHGXPolk31 min
May 28, 3:16 PM CDTSevere Thunderstorm WarningHGXBrazoria, Fort Bend59 min
May 28, 3:36 PM CDTTornado WarningHGXBrazoria, Fort Bend69 min
May 28, 4:38 PM CDTSevere Thunderstorm WarningHGXJackson, Matagorda, Wharton67 min
May 28, 5:57 PM CDTSevere Thunderstorm WarningHGXJackson63 min

Nearby

Severe Thunderstorm Warnings in Texas, 1997Every severe thunderstorm warning in 1997

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.