Alert archive / Texas / Severe Thunderstorm Warnings in 2020
Severe Thunderstorm Warning 10, NWS Amarillo, TX
NWS Amarillo, TX issued this severe thunderstorm warning at Apr 21, 2020, 7:06 PM CDT for Hemphill County, Roberts County, Texas. It was in force for 54 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 21, 2020, 7:06 PM CDT (00:06 UTC)
- Expired
- Apr 21, 2020, 8:00 PM CDT
- In force
- 54 min
- Issued by
- NWS Amarillo, TX
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Hemphill County, TX, Roberts County, TX
The radar
The Amarillo radar (KAMA), 125 km from the middle of the area, began a volume at 00:08 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 21, 3:11 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Amarillo Airport, TX (KAMA), launched 00:00Z, 0.1 hours before the alert went out and 125 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
- 262 J/kg
- Mixed-layer CIN
- -18 J/kg
- Mixed-layer LCL
- 2114 m above ground
- 0-6 km bulk shear
- 76 kt
- 0-1 km storm-relative helicity
- 94 m²/s²
- 0-3 km storm-relative helicity
- 227 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 2.5
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 21, 6:33 PM CDT, 33 minutes earlier.
Area forecast discussion, Apr 21, 6:33 PM CDT, 33 minutes before
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</html>Hazardous weather outlook, Apr 21, 3:14 PM CDT, 3 hours 52 minutes before
Hazardous Weather Outlook...UPDATED National Weather Service Amarillo TX 314 PM CDT Tue Apr 21 2020 OKZ001>003-TXZ001>020-317-220815- 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- 314 PM CDT Tue Apr 21 2020 This Hazardous Weather Outlook is for the Texas and Oklahoma Panhandles. .DAY ONE...This Afternoon and Tonight. Isolated to scattered thunderstorms are expected this afternoon and tonight across the combined Panhandles, favoring the northern and eastern parts of the region. The strongest storms could become severe with large hail and strong winds being the main threats. The chance for tornadoes can't be ruled out this afternoon and evening. Large hail becomes the main threat overnight. A Severe Thunderstorm Watch is in effect until 10 PM CDT this evening. .DAYS TWO THROUGH SEVEN...Wednesday through Monday. Additional thunderstorms will be possible going into Wednesday, and then again Thursday night through Friday across most of the Oklahoma and Texas Panhandles. Severe storms can't be ruled out early Wednesday morning in the eastern Panhandles, but otherwise severe weather is not expected. .SPOTTER INFORMATION STATEMENT... Spotter activation is needed for this afternoon through tonight. Schneider
In the hours before
Special weather statement, Apr 21, 5:21 PM CDT, 1 hour 45 minutes before
Special Weather Statement
National Weather Service Amarillo TX
521 PM CDT Tue Apr 21 2020
TXZ003-004-212245-
Ochiltree TX-Hansford TX-
521 PM CDT Tue Apr 21 2020
...SIGNIFICANT WEATHER ADVISORY FOR EASTERN HANSFORD AND WESTERN
OCHILTREE COUNTIES UNTIL 545 PM CDT...
At 521 PM CDT, Doppler radar was tracking a strong thunderstorm 4
miles south of Spearman, moving northeast at 35 mph.
Dime size hail and wind gusts of 50 to 55 mph will be possible with
this storm.
Locations impacted include...
Spearman, Waka and Farnsworth.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Take shelter in a sturdy building if threatening weather approaches.
&&
A Severe Thunderstorm Watch remains in effect until 1000 PM CDT for
the Panhandle of Oklahoma...and the Panhandle of Texas.
LAT...LON 3627 10070 3606 10108 3605 10120 3627 10141
3650 10107
TIME...MOT...LOC 2221Z 224DEG 31KT 3613 10117
FergusonSpecial weather statement, Apr 21, 5:41 PM CDT, 1 hour 25 minutes before
Special Weather Statement
National Weather Service Amarillo TX
541 PM CDT Tue Apr 21 2020
TXZ009-212315-
Roberts TX-
541 PM CDT Tue Apr 21 2020
...SIGNIFICANT WEATHER ADVISORY FOR NORTHERN ROBERTS COUNTY UNTIL 615
PM CDT...
At 541 PM CDT, Doppler radar was tracking a strong thunderstorm 21
miles northwest of Codman, or 22 miles northwest of Miami, moving
east at 30 mph.
Nickel size hail and wind gusts of 50 to 55 mph will be possible with
this storm.
This storm will remain over mainly rural areas of northern Roberts
County.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Take shelter in a sturdy building if threatening weather approaches.
This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.
&&
A Severe Thunderstorm Watch remains in effect until 1000 PM CDT for
the Panhandle of Texas.
LAT...LON 3582 10109 3602 10109 3606 10072 3606 10059
3574 10057
TIME...MOT...LOC 2241Z 260DEG 25KT 3590 10096
FergusonLocal storm report, Apr 21, 5:55 PM CDT, 1 hour 11 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AMARILLO TX
555 PM CDT TUE APR 21 2020
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0545 PM HAIL 5 S CONLEN 36.16N 102.24W
04/21/2020 E0.75 INCH DALLAM TX TRAINED SPOTTER
TRAINED SPOTTER REPORTED DIME SIZE HAIL ON TWITTER.
&&
EVENT NUMBER AMA2000253
BIEDASpecial weather statement, Apr 21, 6:06 PM CDT, 1 hour before
Special Weather Statement
National Weather Service Amarillo TX
606 PM CDT Tue Apr 21 2020
TXZ003-004-008-009-212330-
Hutchinson TX-Ochiltree TX-Roberts TX-Hansford TX-
606 PM CDT Tue Apr 21 2020
...SIGNIFICANT WEATHER ADVISORY FOR NORTHERN HUTCHINSON...
SOUTHEASTERN HANSFORD...NORTHWESTERN ROBERTS AND SOUTHWESTERN
OCHILTREE COUNTIES UNTIL 630 PM CDT...
At 606 PM CDT, Doppler radar was tracking two strong thunderstorms,
the first 7 miles southwest of Spearman and the second near Pringle.
Both were moving east at 30 mph.
Nickel size hail and wind gusts of 50 to 55 mph will be possible with
these storms.
Locations impacted include...
Spearman, Morse and Pringle.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Take shelter in a sturdy building if threatening weather approaches.
&&
A Severe Thunderstorm Watch remains in effect until 1000 PM CDT for
the Panhandle of Texas.
LAT...LON 3576 10107 3594 10162 3598 10162 3633 10133
3622 10079
TIME...MOT...LOC 2306Z 271DEG 28KT 3612 10130 3595 10142
FergusonLocal storm report, Apr 21, 7:01 PM CDT, 5 minutes before
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</html>Local storm report, Apr 21, 7:05 PM CDT, 1 minute 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 21, 7:11 PM CDT | Severe Thunderstorm Warning | AMA | Hemphill | 49 min |
| Apr 21, 7:39 PM CDT | Areal Flood Advisory | AMA | Hemphill, Roberts | 111 min |
| Apr 21, 7:54 PM CDT | Severe Thunderstorm Warning | AMA | Hemphill, Roberts, Wheeler | 66 min |
| Apr 21, 9:59 PM CDT | Special Weather Statement | AMA | Lipscomb | 46 min |
| Apr 22, 1:31 AM CDT | Special Weather Statement | AMA | Oldham | 29 min |
| Apr 22, 1:55 AM CDT | Severe Thunderstorm Warning | AMA | Hartley, Moore, Oldham, Potter | 50 min |
| Apr 22, 2:43 AM CDT | Severe Thunderstorm Warning | AMA | Hutchinson, Moore | 47 min |
| Apr 22, 3:15 AM CDT | Severe Thunderstorm Warning | AMA | Hutchinson, Moore | 60 min |
| Apr 22, 3:41 AM CDT | Special Weather Statement | AMA | Hemphill | 49 min |
| Apr 22, 3:51 AM CDT | Severe Thunderstorm Warning | AMA | Hansford, Hemphill, Hutchinson, Lipscomb, Ochiltree, Roberts | 54 min |
| Apr 22, 4:12 AM CDT | Severe Thunderstorm Warning | AMA | Gray, Roberts | 48 min |
| Apr 22, 4:44 AM CDT | Special Weather Statement | AMA | Lipscomb | 61 min |
| Apr 22, 5:02 AM CDT | Severe Thunderstorm Warning | AMA | Hemphill, Lipscomb, Ochiltree, Roberts | 37 min |
| Apr 22, 1:31 PM CDT | Special Weather Statement | AMA | Hemphill | 59 min |
| Apr 22, 2:15 PM CDT | Special Weather Statement | AMA | Wheeler | 60 min |
| Apr 22, 6:08 PM CDT | Special Weather Statement | AMA | Oldham | 67 min |
| Apr 22, 2:30 AM CDT | Special Weather Statement | AMA | Texas | 60 min |
Nearby
Severe Thunderstorm Warnings in Texas, 2020Every severe thunderstorm warning in 2020
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.