Alert archive / Texas / Severe Thunderstorm Warnings in 2000
Severe Thunderstorm Warning 97, NWS Houston/Galveston, TX
NWS Houston/Galveston, TX issued this severe thunderstorm warning at May 12, 2000, 10:56 PM CDT for Montgomery County, Walker County, Texas. It was in force for 34 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
- May 12, 2000, 10:56 PM CDT (03:56 UTC)
- Expired
- May 12, 2000, 11:30 PM CDT
- In force
- 34 min
- Issued by
- NWS Houston/Galveston, TX
- Area
- Whole counties
Counties Montgomery County, TX, Walker County, TX
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| May 12, 11:20 PM CDT | Hail 0.75 | Conroe, TX | Dime sized hail near Walden. |
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 |
|---|---|---|---|
| May 12, 8:45 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
The nearest sounding before it
Lake Charles Mun, LA (KLCH), launched 00:00Z, 3.9 hours before the alert went out and 229 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
- 2090 J/kg
- Mixed-layer CIN
- -146 J/kg
- Mixed-layer LCL
- 885 m above ground
- 0-6 km bulk shear
- 8 kt
- 0-1 km storm-relative helicity
- -17 m²/s²
- 0-3 km storm-relative helicity
- 90 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
975 WUUS54 KHGX 130358 SVRHOU TXC339-471-130430- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX 1056 PM CDT FRI MAY 12 2000 THE NATIONAL WEATHER SERVICE IN HOUSTON/GALVESTON TX HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... WALKER COUNTY IN SOUTHEAST TEXAS MONTGOMERY COUNTY IN SOUTHEAST TEXAS * UNTIL 1130 PM CDT * AT 1055 PM CDT...DOPPLER RADAR INDICATED A LINE OF SEVERE THUNDERSTORMS FROM JUST WEST OF CRABBS PRAIRIE TO NEAR MONTGOMERY...MOVING SOUTHEAST AT 30 MPH. * LOCATIONS IN THE PATH OF THE SEVERE THUNDERSTORM INCLUDE... HUNTSVILLE DACUS DOBBIN MONTGOMERY LAKE CONROE DAM CONROE CHATEAU WOODS...OAK RIDGE NORTH...SHENANDOAH...WOODLOCH MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. PLEASE REPORT SEVERE WEATHER TO THE COUNTY SHERIFF...LOCAL POLICE... OR DEPARTMENT OF PUBLIC SAFETY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE.
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 12, 8:45 PM CDT, 2 hours 11 minutes earlier.
Area forecast discussion, May 12, 8:45 PM CDT, 2 hours 11 minutes before
SOUTHEAST TEXAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX 845 PM CDT FRI MAY 12 2000 WW 281 AND 282 JUST ISSUED FOR NORTHERN HALF OF AREA. LINE OF THUNDERSTORMS AHEAD OF FRONT NOW WELL ORGANIZED. VERY MOIST BOUNDARY LAYER AND STEEP LAPSE RATE ABOVE SO EXPECT DAMAGING STRAIGHT LINE WINDS AND SOME LARGE HAIL. OUTFLOW SHOULD PROVIDE SUFFICIENT LIFT TO OVERCOME CAP AND KEEP THUNDERSTORMS GOING TO THE COAST. WHILE COOLING OF THE BOUNDARY LAYER WILL LOWER CAPE...HAVE SEEN ENOUGH OF THESE CONTINUE SEVERE OVERNIGHT SO WILL UPDATE WITH HIGHER POPS AND SEVERE WORDING AREAWIDE. 30 .KHGX...NONE.
In the hours before
Special weather statement, May 12, 9:35 PM CDT, 1 hour 21 minutes before
TXZ163-164-176>179-195>199-210>212-130400- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX 935 PM CDT FRI MAY 12 2000 ...SEVERE THUNDERSTORM WATCH IN EFFECT UNTIL 2 AM SATURDAY MORNING... THE SEVERE STORMS PREDICTION CENTER HAS ISSUED A SEVERE THUNDERTORM WATCH VALID UNTIL 2 AM FOR THE FOLLOWING COUNTIES... BURLESON...BRAZOS...MADISON...HOUSTON...TRINITY...POLK...SAN JACINTO...MONTGOMERY...WALKER...GRIMES...WALLER...AUSTIN... WASHINGTON AND COLORADO. LARGE HAIL AND DAMAGING WINDS ARE EXPECTED FROM THUNDERSTORMS MOVING THROUGH THE WATCH AREA. AT 930 PM...LINES OF STRONG TO SEVERE THUNDERSTORMS WERE LOCATED FROM NEAR LONGVIEW TO CORSICANA AND FROM NORTH OF HEARNE TO WEST OF AUSTIN. THE LINES WERE MOVING SOUTHEAST AT 20 MPH. THIS SECOND LINE WILL BE ENTERING THE AREA FROM CALDWELL TO MADISONVILLE AFTER 10 PM. THUNDERSTORMS SHOULD CONTINUE MOVING SOUTHEAST INTO SOUTHEAST TEXAS THROUGH THE NIGHT. STAY TUNED TO NOAA WEATHER RADIO AND LOCAL MEDIA FOR THE LATEST FORECASTS AND WARNINGS ON 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 |
|---|---|---|---|---|
| May 12, 10:36 PM CDT | Severe Thunderstorm Warning | HGX | Brazos, Grimes | 39 min |
| May 12, 11:05 PM CDT | Severe Thunderstorm Warning | HGX | Harris, Waller | 40 min |
Nearby
Severe Thunderstorm Warnings in Texas, 2000Every severe thunderstorm warning in 2000
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.