Alert archive / Texas / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 21, NWS Amarillo, TX
NWS Amarillo, TX issued this severe thunderstorm warning at Apr 2, 2012, 6:41 PM CDT for Hansford County, Ochiltree County, Texas; Texas County, Oklahoma. It was in force for 64 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Apr 2, 2012, 6:41 PM CDT (23:41 UTC)
- Expired
- Apr 2, 2012, 7:45 PM CDT
- In force
- 64 min
- Issued by
- NWS Amarillo, TX
- Area
- Storm-based polygon
Counties Texas County, OK, Hansford County, TX, Ochiltree County, TX
The radar
The Amarillo radar (KAMA), 155 km from the middle of the area, began a volume at 23:43 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 2, 3:37 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Amarillo Airport, TX (KAMA), launched 12:00Z, 11.7 hours before the alert went out and 155 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 4598 m above ground
- 0-6 km bulk shear
- 20 kt
- 0-1 km storm-relative helicity
- -91 m²/s²
- 0-3 km storm-relative helicity
- 67 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
447 WUUS54 KAMA 022341 SVRAMA OKC139-TXC195-357-030045- /O.NEW.KAMA.SV.W.0021.120402T2341Z-120403T0045Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE AMARILLO TX 641 PM CDT MON APR 2 2012 THE NATIONAL WEATHER SERVICE IN AMARILLO HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... SOUTHEASTERN TEXAS COUNTY IN THE PANHANDLE OF OKLAHOMA NORTHEASTERN HANSFORD COUNTY IN THE PANHANDLE OF TEXAS NORTHWESTERN OCHILTREE COUNTY IN THE PANHANDLE OF TEXAS * UNTIL 745 PM CDT * AT 638 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS HAVE DETECTED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR WAKA...OR ABOUT 12 MILES NORTHEAST OF SPEARMAN... MOVING NORTHWEST AT 30 MPH. * LOCATIONS IMPACTED INCLUDE... HARDESTY... WAKA... OPTIMA... FARNSWORTH... ADAMS... PRECAUTIONARY/PREPAREDNESS ACTIONS... TO REPORT SEVERE WEATHER...PLEASE CALL THE NATIONAL WEATHER SERVICE AT 8 0 6 3 3 5 1 1 2 1. && LAT...LON 3674 10153 3687 10112 3629 10089 3620 10108 TIME...MOT...LOC 2341Z 151DEG 25KT 3632 10104 $$ KJS
1 follow-up statement
723 WWUS54 KAMA 030004 SVSAMA SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE AMARILLO TX 704 PM CDT MON APR 2 2012 OKC139-TXC195-357-030045- /O.CON.KAMA.SV.W.0021.000000T0000Z-120403T0045Z/ TEXAS OK-HANSFORD TX-OCHILTREE TX- 704 PM CDT MON APR 2 2012 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 745 PM CDT FOR NORTHWESTERN OCHILTREE...NORTHEASTERN HANSFORD AND SOUTHEASTERN TEXAS COUNTIES... AT 702 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS CONTINUED TO DETECT A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR WAKA...OR ABOUT 11 MILES EAST OF SPEARMAN...MOVING NORTHWEST AT 30 MPH. OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO OPTIMA...GUYMON AND ADAMS. TO REPORT SEVERE WEATHER...PLEASE CALL THE NATIONAL WEATHER SERVICE AT 8 0 6 3 3 5 1 1 2 1. LAT...LON 3674 10153 3687 10112 3629 10089 3620 10108 TIME...MOT...LOC 0004Z 151DEG 25KT 3624 10101 $$ KJS
The office that day
Everything else NWS Amarillo, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 2, 4:35 AM CDT | Red Flag Warning | AMA | Armstrong, Carson, Deaf Smith, Oldham, Potter, Randall | 16 hr |
| Apr 2, 9:22 AM CDT | Wind Advisory | AMA | Dallam, Hartley, Sherman | 19 hr |
| Apr 2, 6:06 PM CDT | Severe Thunderstorm Warning | AMA | Beaver, Texas | 54 min |
Nearby
Severe Thunderstorm Warnings in Texas, 2012Severe Thunderstorm Warnings in Oklahoma, 2012Every severe thunderstorm warning in 2012
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.