Alert archive / Texas / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 25, NWS Houston/Galveston, TX
NWS Houston/Galveston, TX issued this severe thunderstorm warning at Jan 21, 1998, 7:38 PM CST for Chambers County, Texas. It was in force for 62 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
- Jan 21, 1998, 7:38 PM CST (01:38 UTC)
- Expired
- Jan 21, 1998, 8:40 PM CST
- In force
- 62 min
- Issued by
- NWS Houston/Galveston, TX
- Area
- Whole counties
County Chambers County, TX
The radar
The Houston radar (KHGX), 47 km from the middle of the area, began a volume at 01:40 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
| Time | Report | Where | Remark |
|---|---|---|---|
| Jan 21, 8:10 PM CST | Hail 1.75 | Cove, 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jan 21, 2:15 PM CST | Tornado Watch | SPC | 6 hr |
The nearest sounding before it
Lake Charles Mun, LA (KLCH), launched 00:00Z, 1.6 hours before the alert went out and 149 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.
- Mixed-layer CAPE
- 1567 J/kg
- Mixed-layer CIN
- -9 J/kg
- Mixed-layer LCL
- 528 m above ground
- 0-6 km bulk shear
- 46 kt
- 0-1 km storm-relative helicity
- 120 m²/s²
- 0-3 km storm-relative helicity
- 168 m²/s²
- Significant tornado parameter
- 1.3
- Supercell composite
- 6.4
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 Jan 21, 2:35 PM CST, 5 hours 3 minutes earlier.
Area forecast discussion, Jan 21, 2:35 PM CST, 5 hours 3 minutes before
SOUTHEAST TEXAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX 235 PM CST WED JAN 21 1998 W/OUT GARP AND LITTLE GRIDDED DATA...WL HAVE TO RELY ON AFOS. COMPLEX SFC ANAL INDICATE CDFNT FM NR TXK TO NR ACT TO SRN PART OF HILL COUNTRY. MOISTURE AXIS SOUTH OF FRONT FROM BRO TO CLL. PSEUDO WARM FRONT OVR EXTREME NRN ZNS OF FA. DRY LN/TROF OVR WRN RIO GRANDE PLAINS AND SRN HILL COUNTRY. NGM/ETA SHOWS SLOWING OF CDFNT MOVEMENT ACRS SE TX TONITE. NGM 850 MB 24HR PROG SHOWS TROF FM NR TYR TO LRD AND SHV TO FREEPORT LN BY 23/00Z. W/850-700 MB TROF LN SLOW TO MOVE EWD THURDAY...EXPECT CONT CHC OF PCPN. PCPN CHCS ENDING THUR EVE. SEVERE CELLS NOW DEVELOPING OVR WARM SECTOR/MOISTURE AXIS AREA... W/ROTATION EVIDENT. WOULD EXPECT CONVECTION TO BECOME WIDESPREAD THIS EVE AS MOISTURE AXIS SWINGS TO CNTL PORTION OF RGN AND LLVL JET PICKS UP. SEE SATFFASAT. PRELIMS... CLL T/C E/B 47/51 39/57 7410 PSBL SVR TONITE IAH T/C E/B 57/59 39/57 8510 PSBL SVR/HVY RAINFALL TONITE GLS T/C E/B 56/61 42/56 8620 PSBL SVR/HVY RAINFALL TONITE 37
In the hours before
Special weather statement, Jan 21, 2:07 PM CST, 5 hours 31 minutes before
GMZ330-335-350-355-TXZ163-164-176>179-195>200-210>214-226-227- 235>238-220305- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX 207 PM CST WED JAN 21 1998 THE NATIONAL WEATHER SERVICE HAS ISSUED A TORNADO WATCH EFFECTIVE UNTIL 8 PM FOR THE FOLLOWING COUNTIES IN SOUTHEAST TEXAS: HOUSTON...TRINITY...AUSTIN...JACKSON...WASHINGTON...WHARTON... BRAZOS...COLORADO...BURLESON...BRAZORIA...GRIMES...MONTGOMERY... SAN JACINTO...CHAMBERS...LIBERTY...FORT BEND...HARRIS...MADISON... WALKER...GALVESTON...MATAGORDA...POLK...WALLER...INCLUDING THE ADJACENT COASTAL WATERS. THE WATCH ARE ALSO INCLUDES MILAM...ROBERTSON...AND LEON COUNTIES IN CENTRAL TEXAS. REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR TORNADOES AND SEVERE THUNDERSTORMS IN AND NEAR THE WATCH AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING WEATHER CONDITIONS AND BE PREPARED TO SEEK SHELTER SHOULD SEVERE WEATHER APPROACH Y&OUR AREA. STAY TUNED TO NOAA WEATHER RADIO OR YOUR LOCAL RADIO OR TV STATION FOR LATER STATEMENTS OR WARNINGS CONCERNING THIS SEVERE WEATHER SITUATION.
Special weather statement, Jan 21, 2:07 PM CST, 5 hours 31 minutes before
GMZ330-335-350-355-TXZ163-164-176>179-195>200-210>214-226-227- 235>238-220305- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX 207 PM CST WED JAN 21 1998 THE NATIONAL WEATHER SERVICE HAS ISSUED A TORNADO WATCH EFFECTIVE UNTIL 8 PM FOR THE FOLLOWING COUNTIES IN SOUTHEAST TEXAS: HOUSTON...TRINITY...AUSTIN...JACKSON...WASHINGTON...WHARTON... BRAZOS...COLORADO...BURLESON...BRAZORIA...GRIMES...MONTGOMERY... SAN JACINTO...CHAMBERS...LIBERTY...FORT BEND...HARRIS...MADISON... WALKER...GALVESTON...MATAGORDA...POLK...WALLER...INCLUDING THE ADJACENT COASTAL WATERS. THE WATCH ARE ALSO INCLUDES MILAM...ROBERTSON...AND LEON COUNTIES IN CENTRAL TEXAS. REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR TORNADOES AND SEVERE THUNDERSTORMS IN AND NEAR THE WATCH AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING WEATHER CONDITIONS AND BE PREPARED TO SEEK SHELTER SHOULD SEVERE WEATHER APPROACH Y&OUR AREA. STAY TUNED TO NOAA WEATHER RADIO OR YOUR LOCAL RADIO OR TV STATION FOR LATER STATEMENTS OR WARNINGS CONCERNING THIS SEVERE WEATHER SITUATION.
The office that day
Everything else NWS Houston/Galveston, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 21, 6:07 PM CST | Tornado Warning | HGX | Matagorda, Wharton | 68 min |
| Jan 21, 6:18 PM CST | Flash Flood Warning | HGX | Grimes, Walker | 2 hr |
| Jan 21, 6:21 PM CST | Tornado Warning | HGX | Grimes, Montgomery | 49 min |
| Jan 21, 6:29 PM CST | Tornado Warning | HGX | San Jacinto, Walker | 61 min |
| Jan 21, 6:33 PM CST | Flash Flood Warning | HGX | Fort Bend | 3 hr |
| Jan 21, 6:46 PM CST | Severe Thunderstorm Warning | HGX | Brazoria, Harris | 64 min |
| Jan 21, 6:58 PM CST | Severe Thunderstorm Warning | HGX | Polk | 62 min |
| Jan 21, 8:19 PM CST | Severe Thunderstorm Warning | HGX | Houston | 61 min |
| Jan 21, 8:25 PM CST | Severe Thunderstorm Warning | HGX | Brazoria | 65 min |
| Jan 21, 8:35 PM CST | Severe Thunderstorm Warning | HGX | Chambers, Liberty | 65 min |
| Jan 21, 8:48 PM CST | Severe Thunderstorm Warning | HGX | Galveston, Harris | 62 min |
| Jan 21, 9:34 PM CST | Flash Flood Warning | HGX | Chambers | 3 hr |
| Jan 21, 9:40 PM CST | Severe Thunderstorm Warning | HGX | Chambers | 35 min |
| Jan 21, 9:51 PM CST | Flash Flood Warning | HGX | Harris | 3 hr |
| Jan 21, 10:27 PM CST | Severe Thunderstorm Warning | HGX | Harris | 33 min |
| Jan 21, 10:36 PM CST | Flash Flood Warning | HGX | Chambers | 64 min |
| Jan 21, 10:36 PM CST | Severe Thunderstorm Warning | HGX | Chambers | 64 min |
| Jan 21, 10:53 PM CST | Severe Thunderstorm Warning | HGX | Chambers | 67 min |
| Jan 22, 12:33 AM CST | Flash Flood Warning | HGX | Chambers, Harris | 4 hr |
| Jan 22, 4:27 AM CST | Flash Flood Warning | HGX | Chambers | 3 hr |
| Jan 22, 9:05 AM CST | Severe Thunderstorm Warning | HGX | Jackson | 55 min |
Nearby
Severe Thunderstorm Warnings in Texas, 1998Every 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; radar from the NEXRAD Level II archive.