Alert archive / Texas / Severe Thunderstorm Warnings in 2015
Severe Thunderstorm Warning 193, NWS Amarillo, TX
NWS Amarillo, TX issued this severe thunderstorm warning at Jul 20, 2015, 6:23 PM CDT for Hemphill County, Wheeler County, Texas. It was in force for 34 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
- Jul 20, 2015, 6:23 PM CDT (23:23 UTC)
- Expired
- Jul 20, 2015, 6:57 PM CDT
- In force
- 34 min
- Issued by
- NWS Amarillo, TX
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Hemphill County, TX, Wheeler County, TX
The radar
The Amarillo radar (KAMA), 137 km from the middle of the area, began a volume at 23:22 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
Amarillo Airport, TX (KAMA), launched 12:00Z, 11.4 hours before the alert went out and 137 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
- 761 J/kg
- Mixed-layer CIN
- -196 J/kg
- Mixed-layer LCL
- 1533 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- 78 m²/s²
- 0-3 km storm-relative helicity
- 60 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 Amarillo, TX wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 20, 2:42 PM CDT, 3 hours 41 minutes earlier.
Area forecast discussion, Jul 20, 2:42 PM CDT, 3 hours 41 minutes before
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</html>Hazardous weather outlook, Jul 20, 3:41 PM CDT, 2 hours 42 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE AMARILLO TX 341 PM CDT MON JUL 20 2015 OKZ001>003-TXZ001>020-210845- CIMARRON-TEXAS-BEAVER-DALLAM-SHERMAN-HANSFORD-OCHILTREE-LIPSCOMB- HARTLEY-MOORE-HUTCHINSON-ROBERTS-HEMPHILL-OLDHAM-POTTER-CARSON- GRAY-WHEELER-DEAF SMITH-RANDALL-ARMSTRONG-DONLEY-COLLINGSWORTH- 341 PM CDT MON JUL 20 2015 THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE TEXAS AND OKLAHOMA PANHANDLES. .DAY ONE...THIS EVENING AND TONIGHT. THUNDERSTORMS ARE EXPECTED TO INCREASE THIS EVENING AND LAST INTO THE NIGHT. A FEW STORMS COULD BECOME STRONG TO MARGINALLY SEVERE...WITH WIND GUSTS UP TO 60 MPH THE PRIMARY HAZARD. MARGINALLY SEVERE HAIL UP TO QUARTER SIZE IS POSSIBLE. THUNDERSTORMS WILL BE CAPABLE OF HEAVY RAIN WHICH COULD CAUSE LOCALIZED FLOODING OR FLASH FLOODING. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY. THUNDERSTORMS WILL BE POSSIBLE ACROSS THE OKLAHOMA AND TEXAS PANHANDLES TUESDAY THROUGH WEDNESDAY NIGHT. A FEW STORMS THAT DEVELOP MAY BECOME STRONG TO MARGINALLY SEVERE...WITH WIND GUSTS UP TO 60 MPH...SMALL HAIL...AND LOCALLY HEAVY RAINFALL THE PRIMARY HAZARDS. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED AT THIS TIME.
In the hours before
Special weather statement, Jul 20, 3:55 PM CDT, 2 hours 28 minutes before
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</html>Special weather statement, Jul 20, 6:11 PM CDT, 12 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE AMARILLO TX
611 PM CDT MON JUL 20 2015
TXZ010-015-202345-
HEMPHILL TX-WHEELER TX-
611 PM CDT MON JUL 20 2015
...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN WHEELER AND
SOUTHEASTERN HEMPHILL COUNTIES UNTIL 645 PM CDT...
AT 608 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM 4 MILES SOUTHWEST OF ALLISON...OR 24 MILES NORTH
OF SHAMROCK...MOVING EAST AT 10 MPH.
WIND GUSTS UP TO 50 MPH AND HAIL UP TO ONE HALF INCH IN DIAMETER ARE
EXPECTED WITH THIS STORM...ALONG WITH HEAVY RAIN.
* LOCATIONS IMPACTED INCLUDE...
ALLISON...
IF THREATENING WEATHER APPROACHES YOUR AREA...TAKE SHELTER IN A
STURDY BUILDING.
TORRENTIAL RAIN...WHICH MAY FLOOD LOW LYING AREAS SUCH AS DITCHES AND
UNDERPASSES...IS ALSO LIKELY. DO NOT DRIVE YOUR VEHICLE ON A FLOODED
ROADWAY...TURN AROUND DONT DROWN.
LAT...LON 3545 10006 3546 10018 3560 10023 3569 10013
3574 10000 3571 9999 3545 10000
TIME...MOT...LOC 2311Z 258DEG 8KT 3556 10014
BRBThe office that day
Everything else NWS Amarillo, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 20, 3:55 PM CDT | Special Weather Statement | AMA | Wheeler | 35 min |
| Jul 20, 4:17 PM CDT | Special Weather Statement | AMA | Donley | 28 min |
| Jul 20, 5:04 PM CDT | Areal Flood Advisory | AMA | Collingsworth, Donley, Wheeler | 4 hr |
| Jul 20, 6:11 PM CDT | Special Weather Statement | AMA | Wheeler | 34 min |
| Jul 20, 6:53 PM CDT | Areal Flood Advisory | AMA | Hartley | 4 hr |
| Jul 19, 7:01 PM CDT | Special Weather Statement | AMA | Cimarron | 44 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.