Alert archive / Texas / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 5, NWS Houston/Galveston, TX
NWS Houston/Galveston, TX issued this severe thunderstorm warning at Jan 6, 1998, 10:26 AM CST for Houston County, Walker County, Texas. It was in force for 64 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
- Jan 6, 1998, 10:26 AM CST (16:26 UTC)
- Expired
- Jan 6, 1998, 11:30 AM CST
- In force
- 64 min
- Issued by
- NWS Houston/Galveston, TX
- Area
- Whole counties
Counties Houston County, TX, Walker County, TX
The radar
The Houston radar (KHGX), 178 km from the middle of the area, began a volume at 16:26 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 nearest sounding before it
Shreveport, LA (KSHV), launched 12:00Z, 4.4 hours before the alert went out and 231 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 533 m above ground
- 0-6 km bulk shear
- 49 kt
- 0-1 km storm-relative helicity
- -129 m²/s²
- 0-3 km storm-relative helicity
- 170 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.4
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 6, 9:37 AM CST, 49 minutes earlier.
Area forecast discussion, Jan 6, 9:37 AM CST, 49 minutes before
SOUTHEAST TEXAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX 937 AM CST TUE JAN 6 1998 STRONG THUNDERSTORMS CONTINUING OVER THE AREA WITH VERY HEAVY RAINS SO FAR IN CHAMBERS/LIBERTY/GALVESTON/HARRIS COUNTIES. FLASH FLOOD WATCH WILL CONTINUE THROUGH TONIGHT. LL SSE FLOW WILL CONTINUE TO PUMP THE MOISTURE INTO THE AREA AS THE UPPER LOW MOVES VERY SLOWLY SE AND BECOMES CUT-OFF. THIS IS A VERY DANGEROUS PATTERN DUE TO THE NEARLY SATURATED AIRMASS AND GROUND AND SLOW UPPER LEVEL MOVEMENT. RR OF JET PRODUCING COPIOUS LIFT OVER THE NRN 2/3RDS OF THE AREA. THIS UPPER PATTERN WILL BECOME COUPLED AS THE SUBTROPICAL JET CUTS ACROSS S TX AND INTO THE GULF THIS AFTERNOON. OUR SAVING GRACE MAY BE TO GET THE RAIN-COOLED AIR TO PUSH SOUTH OF THE AREA BUT THIS DREAM LOOKS LIKE IT WILL GO DOWN THE PROVERBIAL DRAIN DUE TO THE CUTOFF LOWS SLOW MOVEMENT. WILL COOR WITH SAT ON UPDATE FOR FFA. NEW 12Z RUNS HAVE SLOWED THINGS DOWN SIGNIFICANTLY AND FORESEE THE RAIN CONTINUING THROUGH TONIGHT. WILL UPDATE POPS FOR TODAY AND TONIGHT AND WILL NEED TO KEEP SVR MENTIONED THROUGH TONIGHT. 45 PRELIMS... CLL F-R/T E/E 069/052 053/040 053 ++42 IAH F-T/T E/E 072/054 056/040 054 ++42 GLS F-T/T E/E 069/059 060/045 052 ++42
The office that day
Everything else NWS Houston/Galveston, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 6, 4:27 AM CST | Severe Thunderstorm Warning | HGX | Chambers | 63 min |
| Jan 6, 4:48 AM CST | Flash Flood Warning | HGX | Brazoria, Chambers, Galveston | 2 hr |
| Jan 6, 6:52 AM CST | Flash Flood Warning | HGX | Brazoria, Chambers, Galveston, Harris | 3 hr |
| Jan 6, 9:52 AM CST | Flash Flood Warning | HGX | Chambers, Liberty | 2 hr |
| Jan 6, 10:32 AM CST | Severe Thunderstorm Warning | HGX | Madison | 28 min |
| Jan 6, 11:57 AM CST | Flash Flood Warning | HGX | Liberty | 2 hr |
| Jan 6, 2:14 PM CST | Flash Flood Warning | HGX | Brazos, Burleson | 2 hr |
| Jan 6, 2:29 PM CST | Flash Flood Warning | HGX | Houston, Trinity, Walker | 3 hr |
| Jan 6, 2:29 PM CST | Flash Flood Warning | HGX | Polk, San Jacinto | 3 hr |
| Jan 6, 2:29 PM CST | Flash Flood Warning | HGX | Montgomery | 3 hr |
| Jan 6, 3:03 PM CST | Flash Flood Warning | HGX | Liberty | 3 hr |
| Jan 6, 4:13 PM CST | Flash Flood Warning | HGX | Brazoria, Galveston | 3 hr |
| Jan 6, 4:13 PM CST | Flash Flood Warning | HGX | Chambers | 3 hr |
| Jan 6, 4:31 PM CST | Severe Thunderstorm Warning | HGX | Galveston, Harris | 44 min |
| Jan 6, 4:35 PM CST | Flash Flood Warning | HGX | Harris | 3 hr |
| Jan 6, 5:09 PM CST | Flash Flood Warning | HGX | Liberty, Polk, San Jacinto | 3 hr |
| Jan 6, 5:09 PM CST | Flash Flood Warning | HGX | Montgomery | 3 hr |
| Jan 6, 5:16 PM CST | Flash Flood Warning | HGX | Austin, Colorado, Jackson, Wharton | 3 hr |
| Jan 6, 5:16 PM CST | Flash Flood Warning | HGX | Fort Bend, Waller | 3 hr |
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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.