Alert archive / Texas / Severe Thunderstorm Warnings in 2004
Severe Thunderstorm Warning 286, NWS San Angelo, TX
NWS San Angelo, TX issued this severe thunderstorm warning at Nov 23, 2004, 2:52 PM CST for Tom Green County, Texas. It was in force for 38 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
- Nov 23, 2004, 2:52 PM CST (20:52 UTC)
- Expired
- Nov 23, 2004, 3:30 PM CST
- In force
- 38 min
- Issued by
- NWS San Angelo, TX
- Area
- Counties, with a storm outline in the text
County Tom Green County, TX
The radar
The San Angelo radar (KSJT), 5 km from the middle of the area, began a volume at 20:53 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
Del Rio, TX (KDRT), launched 12:00Z, 8.9 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
- 682 J/kg
- Mixed-layer CIN
- -50 J/kg
- Mixed-layer LCL
- 554 m above ground
- 0-6 km bulk shear
- 56 kt
- 0-1 km storm-relative helicity
- 168 m²/s²
- 0-3 km storm-relative helicity
- 202 m²/s²
- Significant tornado parameter
- 0.7
- Supercell composite
- 3.6
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 San Angelo, TX wrote its last area forecast discussion before this severe thunderstorm warning went out at Nov 23, 10:33 AM CST, 4 hours 19 minutes earlier.
Area forecast discussion, Nov 23, 10:33 AM CST, 4 hours 19 minutes before
AREA FORECAST DISCUSSION...UPDATED NATIONAL WEATHER SERVICE SAN ANGELO TX 1033 AM CST TUE NOV 23 2004 LOOKS LIKE THE THE DYNAMICS WILL BE TO OUR EAST...AN ACTIVE WEATHER DAY FOR THE EASTERN HALF OF THE STATE. FOR MOST OF OUR AREA...WE WILL SEE DRIER AIR AND MORE SUN. HAVE DECREASED CLOUDS AND RAISED MAX TEMPS INTO THE 70S FOR OUR WESTERN COUNTIES. AND DECREASED POPS...KEEPING HIGHEST POPS ALONG OUR EASTERN COUNTIES. .UPDATE...HAVE UPDATED TO SIGNIFICANTLY LOWER POPS AND REMOVE PORTIONS OF THE SEVERE THUNDERSTORM WATCH. COUPLED JET STRUCTURE WITH THUNDERSTORMS EXITING BIG COUNTRY WITH ONE JET STREAK AND THUNDERSTORMS FORMING OVER CENTRAL TEXAS WITH THE OTHER. THUS MOST ACTIVITY DOES NOT LOOK LIKE IT WILL MATERIALIZE. HOWEVER CAN NOT TAKE OUT POPS ALL TOGETHER YET UNTIL THE MAIN SYSTEM PASSES BY. && .CLIMATE...ABILENE IS NOW UP TO THE SECOND WETTEST NOVEMBER ON RECORD. && .PREV DISCUSSION... HAVE UPDATED ZONES FOR NEW SEVERE THUNDERSTORM WATCH REPLACING TORNADO WATCH. WENT AHEAD AND ADDED 60 POPS ACROSS THE BOARD WITH HIGHEST POPS ACROSS EAST AND NORTHEAST ZONES. MAIN CONCERN TODAY IS THE SEVERE WEATHER THREAT FOR WC TX LOW LEVEL JET HAS STRENGTHEN ACCORDING TO THE VAD WIND PROFILE TO 30 KNOTS. ALREADY SEEING ELEVATED TSTORM DEVELOPING ACROSS MAF CWA IN ADVANCE OF APPROACHING UPPER SHORTWAVE TROF AND STEEP LAPSE RATES. WITH STRONG SHEAR...CAPE VALUES OF 1000-1500JOULES/KG...AND SURFACE BOUNDARY...EXPECT MOSTLY ELEVATED TYPE SUPERCELL STORMS TO PRODUCE LARGE HAIL EARLY THIS MORNING. BY LATE MORNING INTO EARLY AFTERNOON...EXPECT THESE ELEVATED SUPERCELL STORMS TO BECOME MORE SURFACE BASED WITH RETURNING BOUNDARIES AND LOW LEVEL MOISTURE...AND PRODUCE THE POTENTIAL OF TORNADOES GIVEN BOTH INSTABILITY...SURFACE BOUNDARY...LOW LIFTING CONDENSATION LEVELS...AND INCREASING SHEAR. WILL KEEP FLASH FLOOD WATCH THROUGH TODAY AS HEAVY RAIN FROM SEVERE STORMS COULD PRODUCE FLASH FLOODING GIVING VERY LOW FLASH FLOOD GUIDANCE. AS POTENT LOW PRESSURE SYSTEM MOVES NORTHEAST LATE THIS AFTERNOON...WILL CONTINUE TO SEE WRAP AROUND MOISTURE ACROSS NORTHERN CWA THROUGH WEDNESDAY MORNING. EXPECT DRY AND COOLER WEATHER THROUGH FRIDAY AS RIDGE OF HIGH PRESSURE BUILDS INTO WC TX. COULD SEE FREEZING TEMPS ON THANKSGIVING MORNING. UPPER FLOW BECOMES SOUTHWEST SUNDAY INTO MONDAY...AND NEXT FRONT IS PROGGED BY GFS ACROSS THE TX PANHANDLE. AT ANY RATE... SHOULD CONTINUE TO SEE DRY WEATHER THROUGH MONDAY. && .SJT WATCHES/WARNINGS/ADVISORIES...SEVERE THUNDERSTORM WATCH TIL 9 AM FOR CONCHO...COLEMAN...BROWN AND MCCULLOCH. && 27/BRAZZELL
Hazardous weather outlook, Nov 23, 1:21 PM CST, 1 hour 31 minutes before
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</html>In the hours before
Special weather statement, Nov 23, 2:48 PM CST, 4 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SAN ANGELO TX 248 PM CST TUE NOV 23 2004 TXZ072-232145- TOM GREEN TX- 248 PM CST TUE NOV 23 2004 ...SIGNIFICANT WEATHER ALERT EFFECTIVE UNTIL 345 PM CST FOR TOM GREEN COUNTY... AT 243 PM CST...A LINE OF STRONG THUNDERSTORMS WAS INDICATED BY NATIONAL WEATHER SERVICE DOPPLER RADAR JUST SOUTHWEST OF SAN ANGELO... MOVING TOWARD THE CITY. THE STRONG THUNDERSTORM WILL PRODUCE PEA SIZE HAIL AND WIND GUSTS TO 50 MPH ARE LIKELY WITH THIS STORM. RESIDENTS ARE ENCOURAGED TO MONITOR THE SITUATION CLOSELY AND BE PREPARED TO TAKE THE PROPER ACTIONS SHOULD A WARNING BE ISSUED.
The office that day
Everything else NWS San Angelo, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Nov 23, 3:20 AM CST | Severe Thunderstorm Warning | SJT | Fisher | 40 min |
| Nov 23, 3:33 PM CST | Severe Thunderstorm Warning | SJT | Concho | 42 min |
| Nov 23, 3:47 PM CST | Severe Thunderstorm Warning | SJT | Coleman | 43 min |
| Nov 23, 4:24 PM CST | Severe Thunderstorm Warning | SJT | Brown | 51 min |
| Nov 23, 4:53 PM CST | Severe Thunderstorm Warning | SJT | Shackelford | 52 min |
Nearby
Severe Thunderstorm Warnings in Texas, 2004Every severe thunderstorm warning in 2004
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.