Alert archive / Texas / Tornado Watches in 2004
Tornado Watch 450
The Storm Prediction Center issued this tornado watch at Jun 12, 2004, 3:25 PM CDT for 25 counties in Texas. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Jun 12, 2004, 3:25 PM CDT (20:25 UTC)
- Expired
- Jun 12, 2004, 9:00 PM CDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
All 25 counties
Brewster County, TX, Callahan County, TX, Coke County, TX, Concho County, TX, Crockett County, TX, Fisher County, TX, Glasscock County, TX, Howard County, TX, Irion County, TX, Jones County, TX, Mitchell County, TX, Nolan County, TX, Reagan County, TX, Runnels County, TX, Schleicher County, TX, Scurry County, TX, Shackelford County, TX, Stephens County, TX, Sterling County, TX, Sutton County, TX, Taylor County, TX, Terrell County, TX, Tom Green County, TX, Upton County, TX, Val Verde County, TX
The radar
The San Angelo radar (KSJT), 98 km from the middle of the area, began a volume at 20:24 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.
Warnings issued inside it
11 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 12, 4:08 PM CDT | Severe Thunderstorm Warning | MAF | Brewster | 52 min |
| Jun 12, 5:02 PM CDT | Severe Thunderstorm Warning | MAF | Brewster | 58 min |
| Jun 12, 5:15 PM CDT | Tornado Warning | MAF | Pecos, Terrell | 60 min |
| Jun 12, 5:19 PM CDT | Tornado Warning | MAF | Brewster | 56 min |
| Jun 12, 6:16 PM CDT | Tornado Warning | MAF | Brewster, Terrell | 59 min |
| Jun 12, 7:19 PM CDT | Severe Thunderstorm Warning | MAF | Terrell | 56 min |
| Jun 12, 7:56 PM CDT | Severe Thunderstorm Warning | EWX | Val Verde | 64 min |
| Jun 12, 8:02 PM CDT | Severe Thunderstorm Warning | SJT | Fisher, Nolan | 58 min |
| Jun 12, 8:35 PM CDT | Severe Thunderstorm Warning | SJT | Jones | 55 min |
| Jun 12, 8:41 PM CDT | Tornado Warning | SJT | Jones | 49 min |
| Jun 12, 8:42 PM CDT | Severe Thunderstorm Warning | SJT | Sutton | 63 min |
Discussions around it
SPC mesoscale discussions over the same counties from four hours before the watch to its end.
The nearest sounding before it
Midland Regional, TX (KMAF), launched 12:00Z, 8.4 hours before the alert went out and 123 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
- 1156 J/kg
- Mixed-layer CIN
- -259 J/kg
- Mixed-layer LCL
- 1627 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- 105 m²/s²
- 0-3 km storm-relative helicity
- 152 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.3
The text
As transmitted, in the capitals the NWS used until 2016.
000
WWUS20 KWNS 122027
SEL0
SPC WW 122025
TXZ000-130200-
URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 450
NWS STORM PREDICTION CENTER NORMAN OK
325 PM CDT SAT JUN 12 2004
THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF
SOUTHWEST TEXAS
EFFECTIVE THIS SATURDAY AFTERNOON AND EVENING FROM 325 PM UNTIL
900 PM CDT.
TORNADOES...HAIL TO 3 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS
TO 80 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.
THE TORNADO WATCH AREA IS ALONG AND 75 STATUTE MILES EAST AND WEST
OF A LINE FROM 40 MILES NORTH NORTHWEST OF ABILENE TEXAS TO 30
MILES SOUTHEAST OF SANDERSON TEXAS.
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.
OTHER WATCH INFORMATION...CONTINUE...WW 445...WW 446...WW 447...WW
448...WW 449...
DISCUSSION...SEVERE THUNDERSTORMS WILL DEVELOP RAPIDLY ALONG DRY
LINE NEXT FEW HOURS AS MID LEVEL WIND MAX MOVES ACROSS AREA. WITH
VERY UNSTABLE AIRMASS...SUPERCELLS ARE LIKELY WITH VERY LARGE HAIL
AND ISOLATED TORNADOES PRIMARY THREAT.
AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 3 INCHES. EXTREME TURBULENCE AND SURFACE WIND
GUSTS TO 70 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 550.
MEAN STORM MOTION VECTOR 25025.
...HALES
325,0983 294,1004 294,1031 325,1011SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 11, 8:17 PM CDT | Mesoscale Discussion | SPC | Baylor, Coke, Cottle, Fisher, Foard, Glasscock and 15 more | 88 min |
| Jun 11, 10:50 PM CDT | Mesoscale Discussion | SPC | Archer, Baylor, Callahan, Coke, Coleman, Fisher and 15 more | 85 min |
| Jun 11, 10:54 PM CDT | Mesoscale Discussion | SPC | Archer, Baylor, Callahan, Coke, Coleman, Fisher and 15 more | 96 min |
| Jun 12, 1:12 PM CDT | Mesoscale Discussion | SPC | Archer, Baylor, Clay, Jack, Knox, Montague and 5 more | 2 hr |
| Jun 12, 2:40 PM CDT | Tornado Watch | SPC | Archer, Baylor, Childress, Clay, Cottle, Dickens and 12 more | 8 hr |
| Jun 12, 3:08 PM CDT | Mesoscale Discussion | SPC | Borden, Coke, Crane, Crockett, Fisher, Glasscock and 11 more | 2 hr |
| Jun 12, 5:37 PM CDT | Mesoscale Discussion | SPC | Archer, Baylor, Childress, Clay, Cottle, Dickens and 12 more | 83 min |
| Jun 12, 6:10 PM CDT | Mesoscale Discussion | SPC | Brewster, Callahan, Coke, Coleman, Concho, Crockett and 20 more | 95 min |
Nearby
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.