Alert archive / Texas / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 71, NWS Houston/Galveston, TX

February 25, 1998Grimes County, Madison County, Texas

NWS Houston/Galveston, TX issued this severe thunderstorm warning at Feb 25, 1998, 11:38 PM CST for Grimes County, Madison County, Texas. It was in force for 62 min. 2 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: Feb 25, 1998, 11:38 PM CST (05:38 UTC)
Expired: Feb 26, 1998, 12:40 AM CST
In force: 62 min
Issued by: NWS Houston/Galveston, TX
Area: Whole counties

Counties Grimes County, TX, Madison County, TX

What was reported inside it

Time	Report	Where	Remark
Feb 26, 12:21 AM CST	Thunderstorm Wind	Richards, TX	Large trampoline blown nearly 1/2 mile downwind along FM 1486.
Feb 26, 12:30 AM CST	Thunderstorm Wind	Normangee, TX	Trees blown down onto powerlines along FM 39.

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 watch it was issued in

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

Issued	Product	Office	Lasted
Feb 25, 8:30 PM CST	Severe Thunderstorm Watch	SPC	6 hr
Feb 25, 9:30 PM CST	Tornado Watch	SPC	6 hr

The nearest sounding before it

Fort Worth, TX (KFWD), launched 00:00Z, 5.6 hours before the alert went out and 263 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1012 J/kg
Mixed-layer CIN: -11 J/kg
Mixed-layer LCL: 1199 m above ground
0-6 km bulk shear: 62 kt
0-1 km storm-relative helicity: 27 m²/s²
0-3 km storm-relative helicity: 22 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

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 Feb 25, 8:37 PM CST, 3 hours 1 minute earlier.

Area forecast discussion, Feb 25, 8:37 PM CST, 3 hours 1 minute before

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In the hours before

Special weather statement, Feb 25, 8:10 PM CST, 3 hours 28 minutes before

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Special weather statement, Feb 25, 8:10 PM CST, 3 hours 28 minutes before

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Special weather statement, Feb 25, 8:10 PM CST, 3 hours 28 minutes before

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Special weather statement, Feb 25, 8:10 PM CST, 3 hours 28 minutes before

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Special weather statement, Feb 25, 9:31 PM CST, 2 hours 7 minutes before

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Special weather statement, Feb 25, 9:31 PM CST, 2 hours 7 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Feb 25, 10:29 PM CST	Severe Thunderstorm Warning	HGX	Burleson	61 min
Feb 25, 10:49 PM CST	Severe Thunderstorm Warning	HGX	Brazos	61 min
Feb 25, 11:25 PM CST	Severe Thunderstorm Warning	HGX	Washington	60 min
Feb 25, 11:43 PM CST	Severe Thunderstorm Warning	HGX	Houston	62 min
Feb 26, 12:01 AM CST	Severe Thunderstorm Warning	HGX	Montgomery, Walker	59 min
Feb 26, 12:25 AM CST	Severe Thunderstorm Warning	HGX	Waller	65 min
Feb 26, 12:37 AM CST	Severe Thunderstorm Warning	HGX	San Jacinto, Trinity	68 min
Feb 26, 1:25 AM CST	Severe Thunderstorm Warning	HGX	Colorado	60 min
Feb 26, 1:26 AM CST	Severe Thunderstorm Warning	HGX	Polk	64 min
Feb 26, 2:40 AM CST	Flash Flood Warning	HGX	Washington	3 hr
Feb 26, 3:11 AM CST	Flash Flood Warning	HGX	Austin	3 hr
Feb 26, 4:36 AM CST	Severe Thunderstorm Warning	HGX	Colorado, Wharton	59 min
Feb 26, 4:39 AM CST	Severe Thunderstorm Warning	HGX	Jackson	36 min
Feb 26, 4:43 AM CST	Flash Flood Warning	HGX	Montgomery	112 min
Feb 26, 5:23 AM CST	Severe Thunderstorm Warning	HGX	Matagorda	32 min
Feb 26, 5:46 AM CST	Severe Thunderstorm Warning	HGX	Brazoria	29 min
Feb 26, 6:09 AM CST	Severe Thunderstorm Warning	HGX	Galveston	46 min
Feb 26, 6:12 AM CST	Severe Thunderstorm Warning	HGX	Harris	48 min
Feb 26, 6:21 AM CST	Severe Thunderstorm Warning	HGX	Chambers	44 min

Nearby

Severe Thunderstorm Warnings in Texas, 1998 Every severe thunderstorm warning in 1998

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.