Alert archive / Texas / Severe Thunderstorm Warnings in 2015
Severe Thunderstorm Warning 16, NWS Amarillo, TX
NWS Amarillo, TX issued this severe thunderstorm warning at Apr 12, 2015, 5:54 PM CDT for Collingsworth County, Donley County, Texas. It was in force for 66 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 12, 2015, 5:54 PM CDT (22:54 UTC)
- Expired
- Apr 12, 2015, 7:00 PM CDT
- In force
- 66 min
- Issued by
- NWS Amarillo, TX
- Area
- Storm-based polygon
- Hail
- 2.5 in
- Wind
- 60.0 mph
Counties Collingsworth County, TX, Donley County, TX
The radar
The Amarillo radar (KAMA), 110 km from the middle of the area, began a volume at 22:57 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 12, 5:17 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Dodge City, (KDDC), launched 12:00Z, 10.9 hours before the alert went out and 317 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
- 905 J/kg
- Mixed-layer CIN
- -36 J/kg
- Mixed-layer LCL
- 488 m above ground
- 0-6 km bulk shear
- 53 kt
- 0-1 km storm-relative helicity
- 365 m²/s²
- 0-3 km storm-relative helicity
- 363 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 8.4
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 Amarillo, TX wrote its last area forecast discussion before this severe thunderstorm warning went out at Apr 12, 3:58 PM CDT, 1 hour 56 minutes earlier.
Area forecast discussion, Apr 12, 3:58 PM CDT, 1 hour 56 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE AMARILLO TX 358 PM CDT SUN APR 12 2015 .DISCUSSION... VIGOROUS CLOSED UPPER LOW OVER NORTHWEST MEXICO WILL TRACK NORTHEAST ACROSS THE SOUTHERN ROCKIES AND INTO WEST TEXAS TONIGHT AND MONDAY BEFORE LIFTING NORTHEAST INTO WESTERN OKLAHOMA AND THE EASTERN PANHANDLES TUESDAY. A COLD FRONT EXPECTED TO PUSH SOUTH AND EAST ACROSS THE FORECAST AREA TONIGHT WITH A COOL SURFACE RIDGE BUILDING OVER THE PANHANDLES MONDAY. INCREASING CHANCES FOR CONVECTION ACROSS MAINLY THE SOUTHERN HALF OF THE FORECAST AREA TONIGHT THROUGH MONDAY NIGHT WITH LOCALLY HEAVY RAINFALL BEING ONE OF THE MAIN CONCERNS. DRIER CONDITIONS BY THE MIDDLE OF THE WEEK AS THE CLOSED UPPER LOW CONTINUES TO LIFT NORTH AND EAST AWAY FROM THE PANHANDLES AND WEAKENS AND THEN SUBSIDENCE PREVAILS BEHIND THE UPPER SYSTEM BY LATE TUESDAY OR WEDNESDAY. ANOTHER VIGOROUS CLOSED UPPER LOW APPROACHES THE PANHANDLES FROM THE NORTHWEST DURING THE LATTER HALF OF THE WEEK AND ANOTHER COLD FRONT MOVES THROUGH THE FORECAST AREA WEDNESDAY NIGHT. THERE IS CONCERN THAT THIS NEXT UPPER SYSTEM MAY HAVE ENOUGH COLD AIR TO PRODUCE SOME WINTRY PRECIPITATION MAINLY ACROSS THE NORTHWEST SECTIONS OF THE FORECAST AREA. ALTHOUGH NOT RULING THAT OUT COMPLETELY...CONFIDENCE JUST TOO LOW THIS FAR OUT TO WARRANT FORECASTING SNOW OR MIX OF RAIN AND SNOW. ESPECIALLY WITH THE MEDIUM RANGE MODELS NOT IN GOOD AGREEMENT. DECIDED TO KEEP PRECIPITATION LIQUID AND CONVECTIVE AT THIS TIME WEDNESDAY NIGHT THROUGH SATURDAY. UNSEASONABLY COOL AND WET PATTERN THROUGH MOST OF THIS UPCOMING WEEK. SCHNEIDER && .PRELIMINARY POINT TEMPS/POPS... AMARILLO TX 51 57 44 63 44 / 70 80 50 30 5 BEAVER OK 53 65 45 66 45 / 30 20 20 20 10 BOISE CITY OK 47 60 40 66 42 / 20 20 20 5 5 BORGER TX 53 60 46 64 45 / 60 70 40 30 10 BOYS RANCH TX 52 60 43 66 44 / 50 60 40 20 5 CANYON TX 52 56 44 63 44 / 70 80 50 30 5 CLARENDON TX 55 57 47 62 45 / 80 80 50 40 10 DALHART TX 50 60 41 66 42 / 30 40 40 10 5 GUYMON OK 51 63 43 66 43 / 20 20 20 10 5 HEREFORD TX 52 55 43 63 44 / 70 80 50 20 5 LIPSCOMB TX 53 62 46 63 45 / 60 50 30 30 10 PAMPA TX 51 57 44 61 44 / 60 70 40 30 10 SHAMROCK TX 57 59 48 61 46 / 70 80 50 40 10 WELLINGTON TX 58 59 49 63 46 / 80 80 50 40 10 && .AMA WATCHES/WARNINGS/ADVISORIES... TX...NONE. OK...NONE. && 14/11
Hazardous weather outlook, Apr 12, 5:29 PM CDT, 25 minutes before
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Local storm report, Apr 12, 5:44 PM CDT, 10 minutes before
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</html>The office that day
Everything else NWS Amarillo, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 11, 7:17 PM CDT | Tornado Warning | AMA | Carson, Gray | 43 min |
| Apr 11, 7:30 PM CDT | Severe Thunderstorm Warning | AMA | Carson, Gray, Hutchinson, Roberts | 60 min |
| Apr 11, 7:37 PM CDT | Special Weather Statement | AMA | Hutchinson | 23 min |
| Apr 11, 7:57 PM CDT | Severe Thunderstorm Warning | AMA | Carson, Gray, Hutchinson, Roberts | 11 min |
| Apr 11, 8:07 PM CDT | Severe Thunderstorm Warning | AMA | Carson, Gray | 23 min |
| Apr 11, 8:26 PM CDT | Severe Thunderstorm Warning | AMA | Collingsworth, Gray, Hemphill, Wheeler | 64 min |
| Apr 11, 9:28 PM CDT | Severe Thunderstorm Warning | AMA | Collingsworth, Wheeler | 32 min |
| Apr 11, 11:16 PM CDT | Special Weather Statement | AMA | Lipscomb | 44 min |
| Apr 11, 11:21 PM CDT | Severe Thunderstorm Warning | AMA | Hemphill, Lipscomb | 27 min |
| Apr 12, 5:31 PM CDT | Severe Thunderstorm Warning | AMA | Hemphill, Wheeler | 59 min |
| Apr 12, 6:38 PM CDT | Special Weather Statement | AMA | Wheeler | 67 min |
| Apr 12, 6:58 PM CDT | Severe Thunderstorm Warning | AMA | Collingsworth, Donley | 62 min |
Nearby
Severe Thunderstorm Warnings in Texas, 2015Every severe thunderstorm warning in 2015
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.