Alert archive / Texas / Severe Thunderstorm Warnings in 2013
Severe Thunderstorm Warning 80, NWS Norman, OK
NWS Norman, OK issued this severe thunderstorm warning at Apr 1, 2013, 5:03 PM CDT for Hardeman County, Texas. It was in force for 42 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
- Apr 1, 2013, 5:03 PM CDT (22:03 UTC)
- Expired
- Apr 1, 2013, 5:45 PM CDT
- In force
- 42 min
- Issued by
- NWS Norman, OK
- Area
- Storm-based polygon
County Hardeman County, TX
The radar
The Altus AFB radar (KFDR), 71 km from the middle of the area, began a volume at 22:06 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.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Apr 1, 3:36 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
The nearest sounding before it
Amarillo Airport, TX (KAMA), launched 12:00Z, 10.1 hours before the alert went out and 207 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
- 53 J/kg
- Mixed-layer CIN
- -411 J/kg
- Mixed-layer LCL
- 1662 m above ground
- 0-6 km bulk shear
- 46 kt
- 0-1 km storm-relative helicity
- 297 m²/s²
- 0-3 km storm-relative helicity
- 327 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 Norman, OK wrote its last area forecast discussion before this severe thunderstorm warning went out at Apr 1, 3:48 PM CDT, 1 hour 15 minutes earlier.
Area forecast discussion, Apr 1, 3:48 PM CDT, 1 hour 15 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE NORMAN OK 348 PM CDT MON APR 1 2013 .DISCUSSION... CONTINUE TO EXPECT AN ACTIVE WEATHER PATTERN FOR THE NEXT FEW DAYS AS MID-ATMOSPHERIC TROF CURRENTLY OVER NEVADA/UTAH CONTINUES TO SLOWLY MOVE TOWARD THE PLAINS. A COLD FRONT CURRENTLY OVER THE AREA AND A DRYLINE-TYPE FEATURES NEAR THE CAPROCK IN THE TEXAS PANHANDLE/WEST TEXAS ARE PROVIDING BOUNDARIES FOR STORM DEVELOPMENT TONIGHT AS WELL. INITIALLY EXPECT STORMS TO CONTINUE TO DEVELOP IN THE SOUTHEAST TEXAS PANHANDLE AND NEAR/EAST OF THE CAPROCK IN THE ROLLING PLAINS AND MOVE TOWARD THE SOUTHWESTERN PORTION OF OUR CWA THIS EVENING. PRECIPITATION SHOULD BECOME MUCH MORE WIDESPREAD LATER THIS EVENING AS STORM COVERAGE INCREASES AND ISENTROPIC LIFT OVER THE FRONTAL SURFACE ALSO STRENGTHENS AND INCREASES PRECIPITATION COVERAGE. TOMORROW AND TOMORROW NIGHT... THE AREA BECOME MORE DIRECTLY INFLUENCED BY THE UPPER WAVE AND ASSOCIATED LIFT. THE WAVE FINALLY PASSED EAST OF THE AREA ON THURSDAY ENDING THE PRECIPITATION CHANCES FOR THIS EVENT. MUCH COOLER WEATHER IS EXPECTED OVER THE NEXT COUPLE OF DAYS IN THE WAKE OF THE COLD FRONT AND WIDESPREAD CLOUD COVER. TEMPERATURES WILL BEGIN TO WARM AGAIN LATER IN THE WEEK. && .PRELIMINARY POINT TEMPS/POPS... OKLAHOMA CITY OK 42 44 38 44 / 70 70 70 70 HOBART OK 41 45 36 46 / 60 70 70 60 WICHITA FALLS TX 50 55 41 50 / 70 60 70 70 GAGE OK 35 40 32 43 / 60 60 60 60 PONCA CITY OK 38 43 36 47 / 70 70 50 60 DURANT OK 53 58 44 50 / 30 70 70 70 && .OUN WATCHES/WARNINGS/ADVISORIES... OK...NONE. TX...NONE. &&
Hazardous weather outlook, Apr 1, 12:25 PM CDT, 4 hours 38 minutes before
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</html>In the hours before
Special weather statement, Apr 1, 4:32 PM CDT, 31 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORMAN OK
432 PM CDT MON APR 1 2013
OKZ033-TXZ083-012200-
HARMON OK-HARDEMAN TX-
432 PM CDT MON APR 1 2013
...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN HARMON AND
NORTHWESTERN HARDEMAN COUNTIES UNTIL 500 PM CDT...
AT 430 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED 9 MILES NORTH-
NORTHWEST OF CHILDRESS TEXAS...MOVING EAST AT 20 MPH. GOLFBALL SIZED
HAIL HAS BEEN REPORTED NORTHWEST OF CHILDRESS WITH THIS STORM. IF
THIS STORM MAINTAINS INTENSITY... SEVERE THUNDERSTORM WARNINGS WILL
BE REQUIRED SOON FOR HARDEMAN COUNTY TEXAS AND PERHAPS HARMON COUNTY
OKLAHOMA.
LAT...LON 3466 9989 3440 9991 3441 9997 3441 10000
3467 10000
TIME...MOT...LOC 2125Z 274DEG 16KT 3455 10032
..SPEG.The office that day
Everything else NWS Norman, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 1, 4:32 PM CDT | Special Weather Statement | OUN | Childress | 28 min |
| Apr 1, 5:41 PM CDT | Severe Thunderstorm Warning | OUN | Hardeman | 49 min |
| Apr 1, 6:49 PM CDT | Severe Thunderstorm Warning | OUN | Foard, Knox | 41 min |
Nearby
Severe Thunderstorm Warnings in Texas, 2013Every severe thunderstorm warning in 2013
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.