Alert archive / Texas / Tornado Warnings in 2000

Tornado Warning 37, NWS Houston/Galveston, TX

November 12, 2000Colorado County, Texas

NWS Houston/Galveston, TX issued this tornado warning at Nov 12, 2000, 6:22 PM CST for Colorado County, Texas. It was in force for 23 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.

The facts

Issued
Nov 12, 2000, 6:22 PM CST (00:22 UTC)
Expired
Nov 12, 2000, 6:45 PM CST
In force
23 min
Issued by
NWS Houston/Galveston, TX
Area
Whole counties; the outline is the Mesonet’s reconstruction

County Colorado County, TX

The radar

The Houston radar (KHGX), 138 km from the middle of the area, began a volume at 00:24 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
Nov 12, 1:30 PM CSTTornado WatchSPC6 hr
Nov 12, 5:00 PM CSTTornado WatchSPC6 hr

The nearest sounding before it

Corpus Christi, TX (KCRP), launched 00:00Z, 0.4 hours before the alert went out and 223 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, Corpus Christi, TX at 00:00Z on 2000-11-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1083 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Corpus Christi, TX at 00:00Z on 2000-11-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 99 square meters per square second.1939587897Sfc1 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
1083 J/kg
Mixed-layer CIN
-26 J/kg
Mixed-layer LCL
767 m above ground
0-6 km bulk shear
70 kt
0-1 km storm-relative helicity
99 m²/s²
0-3 km storm-relative helicity
137 m²/s²
Significant tornado parameter
0.7
Supercell composite
3.9

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WFUS54 KHGX 130022
TORHOU

TXC089-130045-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
622 PM CST SUN NOV 12 2000

THE NATIONAL WEATHER SERVICE IN HOUSTON/GALVESTON TX HAS ISSUED A

* TORNADO WARNING FOR...
  COLORADO COUNTY IN SOUTHEAST TEXAS

* UNTIL 645 PM CST

* AT 619 PM CST...DOPPLER RADAR INDICATED A THUNDERSTORM CAPABLE OF
  PRODUCING A TORNADO NEAR ROCK ISLAND...MOVING EAST AT 25 MPH.

* LOCATIONS IN THE PATH OF THE TORNADO INCLUDE...
  ALTAIR
  EAGLE LAKE

MOVE TO A SMALL INTERIOR ROOM ON THE LOWEST FLOOR. ABANDON YOUR CAR
OR MOBILE HOME FOR A STRONG SHELTER NOW!

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.

LAT...LON 2965 9663 2947 9660 2951 9634 2970 9628

What forecasters said that day

The local office's own words before this tornado 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 tornado warning went out at Nov 12, 2:25 PM CST, 3 hours 57 minutes earlier.

Area forecast discussion, Nov 12, 2:25 PM CST, 3 hours 57 minutes before
SOUTHEAST TEXAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
225 PM CST SUN NOV 12 2000

MINI-SUPERCELL THUNDERSTORMS HAVE DEVELOPED ALONG THE WRN CWA AT
EARLY AFTERNOON...ONE OF WHICH PRODUCED AN APPARENT TORNADO AND
DAMAGE IN COLORADO COUNTY EARLIER. SO THE SEVERE THREAT IS THE PRIMARY
SHORT TERM FORECAST ISSUE. OTHERWISE THE MAIN FORECAST ISSUES ARE
POPS TONIGHT/MON... TEMPS TUE/WED...POPS THU...AND TEMPS FRI-SUN.

THE 12Z NCEP MODELS ARE IN FAIR TO GOOD AGREEMENT. THE MAIN
DIFFERENCE IS THE AVN BLASTING THE FRONT OFF THE COAST QUICKLY...
WITH THE ETA/NGM SOLUTION A MORE SEDATE PUSH. PREFER THE ETA/NGM
SOLUTION BASED ON THE FRONT'S SLOW PROGRESS...LACK OF STRONG
PRESSURE RISES BEHIND IT...AND ALREADY E-W ORIENTATION OF THE FRONT
WEST OF SJT...INDICATING IT'S NEARING THE END OF SWD PROGRESS. ONCE
THE SHORT WAVE TROUGH AND JET STREAK MOVE EWRD THE FRONT SHOULD
ACCELERATE...BUT NOT AS MUCH AS THE AVN.

EXPECT SEVERE WEATHER TO CONTINUE INTO THE EVENING. CONFIDENCE IS
HIGH FOR CATEGORICAL POPS OVERNIGHT...SO WILL RETAIN MOST OF CURRENT
FORECAST IN THIS REGARD. THE LATEST ETA/NGM INDICATE ENHANCED
ISENTROPIC LIFT OVER SERN TX AS THE FRONT PUSHES OFF THE COAST...SO
WILL EXTEND SHOWERS/LIGHT RAIN POPS THROUGH THE DAY TOMORROW...WITH
SLOWER CLEARING FROM NW TO SE. SIMILARLY...MON NIGHT TEMPS WILL
PROBABLY NOT DROP AS FAR AS IN THE CURRENT FORECAST...SO WILL BOOST
SOME. HOWEVER...WILL STICK WITH CLOSE TO PAST PATH OF SHADING AWAY
FROM THE TOO WARM FWC AFTER FROPA...THEN AVOIDING THE TOO COLD FAN
ON RETURN FLOW WARMUP.

NO CHANGES TO THE EXTENDED...THU STILL LOOKS FAVORABLE FOR THE NEXT
FRONT/POPS....THEN SEASONALLY COOL WITH A SLIGHT CHANCE OF RAIN OVER
THE WEEKEND.

.KHGX...SCA IN EFFECT FOR ALL BAYS AND GULF WATERS.

31/47/48

PRELIMS...
CLL EU 045/050 035/056 037 +20
IAH EU 050/055 040/059 038 930
GLS WB 062/062 048/0@57 047 840

In the hours before

Special weather statement, Nov 12, 1:35 PM CST, 4 hours 47 minutes before
TXZ163-164-176>179-195>199-210>213-226-227-235-130100-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
135 PM CST SUN NOV 12 2000

THE STORM PREDICTION CENTER HAS ISSUED TORNADO WATCH 802 FOR MOST
OF SOUTHEAST TEXAS UNTIL 7 PM. COUNTIES THE WATCH AREA INCLUDE:

AUSTIN...BRAZOS...BURLESON...COLORADO...FORT BEND...GRIMES...
HARRIS...HOUSTON...JACKSON...MADISON...MONTGOMERY...POLK...
SAN JACINTO...TRINITY...WALKER... WALLER...WASHINGTON...WHARTON.

LEON...MILAM AND ROBERTSON COUNTIES IN CENTRAL TEXAS ARE ALSO
INCLUDED IN THE WATCH AREA.

REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR
TORNADOES AND SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA.
PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING
WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS AND POSSIBLE
WARNINGS.

STAY TUNED TO NOAA WEATHER RADIO...COMMERCIAL RADIO OR TELEVISION
STATIONS...OR YOUR CABLE TELEVISION SERVICE PROVIDER FOR LATER
STATEMENTS CONCERNING THIS SEVERE WEATHER THREAT.

31/JWZ
Special weather statement, Nov 12, 5:00 PM CST, 1 hour 22 minutes before
GMZ330-335-350-355-TXZ164-177>179-197>200-210>214-226-227-235>238-
130500-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
500 PM CST SUN NOV 12 2000

THE STORM PREDICTION CENTER HAS ISSUED TORNADO WATCH 803 FOR MOST
OF SOUTHEAST TEXAS UNTIL 11 PM. THIS WATCH REPLACES THE EARLIER
TORNADO WATCH. COUNTIES THE WATCH AREA INCLUDE:

AUSTIN...BRAZORIA...CHAMBERS...COLORADO...FORT BEND...GALVESTON...
GRIMES...HARRIS...JACKSON...LIBERTY...MATAGORDA...MONTGOMERY...POLK...
SAN JACINTO...TRINITY...WALKER...WALLER...WASHINGTON...WHARTON...
GALVESTON AND MATAGORDA BAYS...AND THE ADJACENT COASTAL WATERS.

REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR
TORNADOES AND SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA.
PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING
WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS AND POSSIBLE
WARNINGS.

STAY TUNED TO NOAA WEATHER RADIO...COMMERCIAL RADIO OR TELEVISION
STATIONS...OR YOUR CABLE TELEVISION SERVICE PROVIDER FOR LATER
STATEMENTS CONCERNING THIS SEVERE WEATHER THREAT.

31/JWZ
Special weather statement, Nov 12, 5:05 PM CST, 1 hour 17 minutes before
TXZ163-176-195-196-122320-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
505 PM CST SUN NOV 12 2000

...FOUR COUNTIES CLEARED FROM TORNADO WATCH...

TORNADO WATCH 802 HAS BEEN REPLACED BY A NEW TORNADO WATCH CLOSER TO
THE COAST. BURLESON...BRAZOS...MADISON...AND HOUSTON COUNTIES HAVE
BEEN CLEARED FROM ALL TORNADO WATCHES. THIS INCLUDES THE CITIES OF
CALDWELL...BRYAN...COLLEGE STATION...MADISONVILLE...AND CROCKdETT.

NO ADDITIONAL SEVERE WEATHER IS EXPECTED IN THESE COUNTIES THE REST OF
TONIGHT.

31/JWZ

The office that day

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

IssuedProductOfficeCountiesLasted
Nov 12, 6:00 PM CSTTornado WarningHGXFort Bend, Wharton30 min
Nov 12, 6:37 PM CSTTornado WarningHGXFort Bend38 min
Nov 12, 6:43 PM CSTTornado WarningHGXColorado, Wharton47 min
Nov 12, 7:05 PM CSTTornado WarningHGXBrazoria, Harris40 min
Nov 12, 7:15 PM CSTTornado WarningHGXFort Bend15 min
Nov 12, 7:43 PM CSTSevere Thunderstorm WarningHGXBrazoria, Harris47 min
Nov 12, 7:45 PM CSTSevere Thunderstorm WarningHGXFort Bend45 min
Nov 12, 8:24 PM CSTSevere Thunderstorm WarningHGXChambers, Galveston66 min
Nov 12, 8:30 PM CSTSevere Thunderstorm WarningHGXBrazoria60 min

Nearby

Tornado Warnings in Texas, 2000Every tornado warning in 2000Tornadoes 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.