Alert archive / Texas / Severe Thunderstorm Warnings in 2018
Severe Thunderstorm Warning 242, NWS Amarillo, TX
NWS Amarillo, TX issued this severe thunderstorm warning at Aug 16, 2018, 7:18 PM CDT for Gray County, Wheeler 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
- Aug 16, 2018, 7:18 PM CDT (00:18 UTC)
- Expired
- Aug 16, 2018, 8:00 PM CDT
- In force
- 42 min
- Issued by
- NWS Amarillo, TX
- Area
- Storm-based polygon
- Hail
- 1.25 in
- Wind
- 60.0 mph
Counties Gray County, TX, Wheeler County, TX
The radar
The Amarillo radar (KAMA), 108 km from the middle of the area, began a volume at 00:18 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 00:00Z, 0.3 hours before the alert went out and 107 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
- 1376 J/kg
- Mixed-layer CIN
- -11 J/kg
- Mixed-layer LCL
- 2307 m above ground
- 0-6 km bulk shear
- 16 kt
- 0-1 km storm-relative helicity
- 11 m²/s²
- 0-3 km storm-relative helicity
- 71 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.2
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 Aug 16, 3:07 PM CDT, 4 hours 11 minutes earlier.
Area forecast discussion, Aug 16, 3:07 PM CDT, 4 hours 11 minutes before
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</html>Hazardous weather outlook, Aug 16, 3:10 PM CDT, 4 hours 8 minutes before
Hazardous Weather Outlook National Weather Service Amarillo TX 310 PM CDT Thu Aug 16 2018 OKZ001>003-TXZ001>020-317-171200- Cimarron-Texas-Beaver-Dallam-Sherman-Hansford-Ochiltree-Lipscomb- Hartley-Moore-Hutchinson-Roberts-Hemphill-Oldham-Potter-Carson- Gray-Wheeler-Deaf Smith-Randall-Armstrong-Donley-Collingsworth- Palo Duro Canyon- 310 PM CDT Thu Aug 16 2018 This Hazardous Weather Outlook is for the Texas and Oklahoma Panhandles. .DAY ONE...This Afternoon and Tonight. A few thunderstorms are possible this afternoon and evening. A strong storm or two will be possible, but widespread severe weather is not expected. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. Thunderstorms will be possible across much of the Oklahoma and Texas Panhandles Friday through Tuesday night, except for Sunday night through Monday night which are expected to be dry. A few storms may become strong to marginally severe, with damaging winds and hail the primary hazards. In addition, heavy rainfall may accompany the strongest storms, which could lead to localized flooding. .SPOTTER INFORMATION STATEMENT... Spotter activation is not anticipated at this time.
In the hours before
Special weather statement, Aug 16, 6:42 PM CDT, 36 minutes before
Special Weather Statement National Weather Service Amarillo TX 642 PM CDT THU AUG 16 2018 OKZ001-170015- Cimarron OK- 642 PM CDT THU AUG 16 2018 ...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN CIMARRON COUNTY UNTIL 715 PM CDT... At 641 PM CDT, Doppler radar was tracking a strong thunderstorm over Felt, or 20 miles southwest of Boise City. This storm was nearly stationary. Nickel size hail and wind gusts up to 50 mph will be possible with this storm. Locations impacted include... Felt and Wheeless. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take shelter in a sturdy building if threatening weather approaches. Torrential rainfall is also occurring with this storm, and may lead to localized flooding. Do not drive your vehicle through flooded roadways. && LAT...LON 3675 10300 3676 10265 3651 10261 3650 10300 TIME...MOT...LOC 2341Z 150DEG 2KT 3655 10281 MJG
Special weather statement, Aug 16, 7:07 PM CDT, 11 minutes before
Special Weather Statement
National Weather Service Amarillo TX
707 PM CDT THU AUG 16 2018
TXZ014-015-170030-
Gray TX-Wheeler TX-
707 PM CDT THU AUG 16 2018
...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN WHEELER AND
NORTHEASTERN GRAY COUNTIES UNTIL 730 PM CDT...
At 707 PM CDT, Doppler radar was tracking a strong thunderstorm 10
miles west of New Mobeetie, or 12 miles south of Miami, moving
northeast at 5 mph.
Penny size hail and wind gusts up to 50 mph will be possible with
this storm.
Locations impacted include...
New Mobeetie and Mobeetie.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Take shelter in a sturdy building if threatening weather approaches.
Torrential rainfall is also occurring with this storm, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.
&&
LAT...LON 3542 10064 3556 10072 3562 10057 3562 10041
3546 10038
TIME...MOT...LOC 0007Z 241DEG 6KT 3552 10062
MJGThe office that day
Everything else NWS Amarillo, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 16, 7:07 PM CDT | Special Weather Statement | AMA | Gray | 23 min |
| Aug 16, 8:18 PM CDT | Special Weather Statement | AMA | Moore | 27 min |
| Aug 16, 8:44 PM CDT | Special Weather Statement | AMA | Carson | 31 min |
| Aug 16, 9:05 PM CDT | Severe Thunderstorm Warning | AMA | Carson, Gray | 40 min |
| Aug 16, 9:35 PM CDT | Special Weather Statement | AMA | Donley | 25 min |
| Aug 16, 10:21 PM CDT | Special Weather Statement | AMA | Potter | 24 min |
| Aug 16, 10:41 PM CDT | Severe Thunderstorm Warning | AMA | Potter | 47 min |
| Aug 16, 11:07 PM CDT | Severe Thunderstorm Warning | AMA | Potter | 21 min |
| Aug 17, 2:30 PM CDT | Severe Thunderstorm Warning | AMA | Hutchinson | 60 min |
| Aug 17, 3:23 PM CDT | Severe Thunderstorm Warning | AMA | Hutchinson | 67 min |
| Aug 17, 3:31 PM CDT | Severe Thunderstorm Warning | AMA | Moore, Sherman | 59 min |
| Aug 17, 3:44 PM CDT | Flash Flood Warning | AMA | Hutchinson | 76 min |
| Aug 17, 3:46 PM CDT | Special Weather Statement | AMA | Dallam | 29 min |
| Aug 17, 3:58 PM CDT | Areal Flood Advisory | AMA | Hansford, Hutchinson, Moore, Sherman | 3 hr |
| Aug 17, 4:01 PM CDT | Special Weather Statement | AMA | Gray | 29 min |
| Aug 17, 4:33 PM CDT | Special Weather Statement | AMA | Sherman | 27 min |
| Aug 17, 4:41 PM CDT | Severe Thunderstorm Warning | AMA | Gray | 64 min |
| Aug 17, 5:41 PM CDT | Severe Thunderstorm Warning | AMA | Dallam, Hartley | 35 min |
| Aug 17, 4:56 PM CDT | Special Weather Statement | AMA | Cimarron | 34 min |
Nearby
Severe Thunderstorm Warnings in Texas, 2018Every severe thunderstorm warning in 2018
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.