Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 276, NWS Amarillo, TX
NWS Amarillo, TX issued this severe thunderstorm warning at Oct 12, 2021, 7:57 PM CDT for Cimarron County, Texas County, Oklahoma. It was in force for 63 min. 3 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Oct 12, 2021, 7:57 PM CDT (00:57 UTC)
- Expired
- Oct 12, 2021, 9:00 PM CDT
- In force
- 63 min
- Issued by
- NWS Amarillo, TX
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Cimarron County, OK, Texas County, OK
The radar
The Amarillo radar (KAMA), 163 km from the middle of the area, began a volume at 00:57 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Oct 12, 8:10 PM CDT | TSTM WND GST 62 | 11 Ne Eva, OK | OKLAHOMA MESONET SITE EVA EVAX. |
| Oct 12, 8:49 PM CDT | HAIL 1 | 5 E Hough, OK | CORRECTS PREVIOUS HAIL REPORT FROM 5 E HOUGH. |
| Oct 12, 8:58 PM CDT | TSTM WND GST 67 | 1 Wsw Guymon, OK | ASOS STATION KGUY GUYMON. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Oct 12, 5:34 PM CDT | Tornado Watch | SPC | 5 hr |
The nearest sounding before it
Amarillo Airport, TX (KAMA), launched 00:00Z, 1.0 hours before the alert went out and 163 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
- 165 J/kg
- Mixed-layer CIN
- -69 J/kg
- Mixed-layer LCL
- 2910 m above ground
- 0-6 km bulk shear
- 49 kt
- 0-1 km storm-relative helicity
- 141 m²/s²
- 0-3 km storm-relative helicity
- 172 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.7
The text
As transmitted.
271
WUUS54 KAMA 130057
SVRAMA
OKC025-139-130200-
/O.NEW.KAMA.SV.W.0276.211013T0057Z-211013T0200Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Amarillo TX
757 PM CDT Tue Oct 12 2021
The National Weather Service in Amarillo has issued a
* Severe Thunderstorm Warning for...
Texas County in the Panhandle of Oklahoma...
Southeastern Cimarron County in the Panhandle of Oklahoma...
* Until 900 PM CDT.
* At 757 PM CDT, a severe thunderstorm was located 7 miles southwest
of Hough, or 15 miles northwest of Guymon, moving northeast at
55 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Minor damage to roofs, siding, and trees is possible.
Hail damage to vehicles is expected.
* Locations impacted include...
Guymon, Goodwell, Texhoma, Optima, Eva and Hough.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Tornado Watch remains in effect until 1100 PM CDT for the Panhandle
of Oklahoma.
For your protection move to an interior room on the lowest floor of a
building.
A Tornado Watch remains in effect until 1100 PM CDT for the Panhandle
of Oklahoma.
&&
LAT...LON 3650 10162 3650 10212 3699 10192 3700 10106
TIME...MOT...LOC 0057Z 233DEG 53KT 3682 10170
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Ward4 follow-up statements
047
WWUS54 KAMA 130104
SVSAMA
Severe Weather Statement
National Weather Service Amarillo TX
804 PM CDT Tue Oct 12 2021
OKC025-139-130200-
/O.CON.KAMA.SV.W.0276.000000T0000Z-211013T0200Z/
Texas OK-Cimarron OK-
804 PM CDT Tue Oct 12 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 900 PM CDT
FOR TEXAS AND SOUTHEASTERN CIMARRON COUNTIES...
At 804 PM CDT, a severe thunderstorm was located over Hough, or 14
miles northwest of Guymon, moving northeast at 60 mph.
HAZARD...70 mph wind gusts and ping pong ball size hail.
SOURCE...Radar indicated.
IMPACT...Expect some tree damage. Damage is likely to mobile homes,
roofs, and outbuildings. People and animals outdoors will
be injured. Expect hail damage to roofs, siding, windows,
and vehicles.
Locations impacted include...
Guymon, Goodwell, Texhoma, Optima, Eva and Hough.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Tornado Watch remains in effect until 1100 PM CDT for the Panhandle
of Oklahoma.
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3650 10162 3650 10212 3699 10192 3700 10106
TIME...MOT...LOC 0104Z 233DEG 53KT 3688 10159
THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.50 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...70 MPH
$$
Ward043
WWUS54 KAMA 130114
SVSAMA
Severe Weather Statement
National Weather Service Amarillo TX
814 PM CDT Tue Oct 12 2021
OKC025-130123-
/O.CAN.KAMA.SV.W.0276.000000T0000Z-211013T0200Z/
Cimarron OK-
814 PM CDT Tue Oct 12 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN CIMARRON COUNTY
IS CANCELLED...
The severe thunderstorm which prompted the warning has moved out of
the warned area. Therefore, the warning has been cancelled.
A Tornado Watch remains in effect until 1100 PM CDT for the Panhandle
of Oklahoma.
LAT...LON 3650 10204 3677 10184 3699 10177 3700 10106
3650 10162
TIME...MOT...LOC 0113Z 233DEG 53KT 3697 10144
$$
OKC139-130200-
/O.CON.KAMA.SV.W.0276.000000T0000Z-211013T0200Z/
Texas OK-
814 PM CDT Tue Oct 12 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 900 PM CDT
FOR CENTRAL TEXAS COUNTY...
At 813 PM CDT, a severe thunderstorm was located 9 miles northeast of
Hough, or 12 miles south of Feterita, moving northeast at 60 mph.
HAZARD...Tennis ball size hail and 70 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect some tree damage. Damage is likely to mobile homes,
roofs, and outbuildings. People and animals outdoors will
be injured. Expect hail damage to roofs, siding, windows,
and vehicles.
Locations impacted include...
Guymon, Goodwell, Texhoma, Optima and Hough.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Tornado Watch remains in effect until 1100 PM CDT for the Panhandle
of Oklahoma.
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3650 10204 3677 10184 3699 10177 3700 10106
3650 10162
TIME...MOT...LOC 0113Z 233DEG 53KT 3697 10144
THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...2.50 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...70 MPH
$$
Ward318
WWUS54 KAMA 130132
SVSAMA
Severe Weather Statement
National Weather Service Amarillo TX
832 PM CDT Tue Oct 12 2021
OKC139-130200-
/O.CON.KAMA.SV.W.0276.000000T0000Z-211013T0200Z/
Texas OK-
832 PM CDT Tue Oct 12 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 900 PM CDT
FOR CENTRAL TEXAS COUNTY...
At 831 PM CDT, a severe thunderstorm was located 5 miles southeast of
Hough, or 9 miles north of Guymon, moving northeast at 30 mph.
HAZARD...Tennis ball size hail and 70 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect some tree damage. Damage is likely to mobile homes,
roofs, and outbuildings. People and animals outdoors will
be injured. Expect hail damage to roofs, siding, windows,
and vehicles.
Locations impacted include...
Guymon, Goodwell, Optima and Hough.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Tornado Watch remains in effect until 1100 PM CDT for the Panhandle
of Oklahoma.
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3658 10180 3677 10176 3699 10167 3700 10106
3654 10159
TIME...MOT...LOC 0131Z 238DEG 28KT 3683 10149
THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...2.50 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...70 MPH
$$
Ward592
WWUS54 KAMA 130140
SVSAMA
Severe Weather Statement
National Weather Service Amarillo TX
840 PM CDT Tue Oct 12 2021
OKC139-130200-
/O.CON.KAMA.SV.W.0276.000000T0000Z-211013T0200Z/
Texas OK-
840 PM CDT Tue Oct 12 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 900 PM CDT
FOR CENTRAL TEXAS COUNTY...
At 840 PM CDT, a severe thunderstorm was located 8 miles northwest of
Hooker, or 17 miles northeast of Guymon, moving northeast at 60 mph.
HAZARD...Golf ball size hail and 70 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect some tree damage. Damage is likely to mobile homes,
roofs, and outbuildings. People and animals outdoors will
be injured. Expect hail damage to roofs, siding, windows,
and vehicles.
Locations impacted include...
Guymon, Goodwell, Optima and Hough.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Tornado Watch remains in effect until 1100 PM CDT for the Panhandle
of Oklahoma.
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3658 10180 3677 10167 3699 10155 3700 10106
3654 10159
TIME...MOT...LOC 0140Z 233DEG 53KT 3691 10135
THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...70 MPH
$$
WardThe office that day
Everything else NWS Amarillo, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 12, 7:06 PM CDT | Special Weather Statement | AMA | Cimarron, Texas | 24 min |
| Oct 12, 8:06 PM CDT | Tornado Warning | AMA | Texas | 24 min |
| Oct 12, 8:28 PM CDT | Tornado Warning | AMA | Texas | 32 min |
| Oct 12, 8:35 PM CDT | Tornado Warning | AMA | Texas | 25 min |
| Oct 12, 8:52 PM CDT | Severe Thunderstorm Warning | AMA | Beaver, Texas | 53 min |
| Oct 12, 9:01 PM CDT | Tornado Warning | AMA | Texas | 44 min |
| Oct 12, 9:12 PM CDT | Tornado Warning | AMA | Texas | 33 min |
| Oct 12, 9:34 PM CDT | Severe Thunderstorm Warning | AMA | Beaver, Texas | 56 min |
| Oct 12, 9:47 PM CDT | Tornado Warning | AMA | Beaver, Texas | 28 min |
| Oct 12, 9:51 PM CDT | Severe Thunderstorm Warning | AMA | Beaver, Texas | 54 min |
| Oct 12, 11:00 PM CDT | Severe Thunderstorm Warning | AMA | Beaver | 60 min |
| Oct 12, 11:59 PM CDT | Severe Thunderstorm Warning | AMA | Beaver | 61 min |
Nearby
Severe Thunderstorm Warnings in Oklahoma, 2021Every severe thunderstorm warning in 2021
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.