Alert archive / Texas / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 185, NWS Amarillo, TX
NWS Amarillo, TX issued this severe thunderstorm warning at Jul 4, 2021, 4:32 PM CDT for 4 counties in Texas. It was in force for 65 min. 1 report 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
- Jul 4, 2021, 4:32 PM CDT (21:32 UTC)
- Expired
- Jul 4, 2021, 5:37 PM CDT
- In force
- 65 min
- Issued by
- NWS Amarillo, TX
- Area
- Storm-based polygon
- Hail
- 1.25 in
- Wind
- 60.0 mph
Counties Hartley County, TX, Moore County, TX, Oldham County, TX, Potter County, TX
The radar
The Amarillo radar (KAMA), 73 km from the middle of the area, began a volume at 21:31 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 |
|---|---|---|---|
| Jul 4, 4:46 PM CDT | HAIL 1.25 | 1 Se Dumas, TX | SOCIAL MEDIA REPORT OF HALF DOLLAR SIZE HAIL. |
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 |
|---|---|---|---|
| Jul 4, 3:37 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Amarillo Airport, TX (KAMA), launched 12:00Z, 9.5 hours before the alert went out and 74 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
- 997 J/kg
- Mixed-layer CIN
- -55 J/kg
- Mixed-layer LCL
- 825 m above ground
- 0-6 km bulk shear
- 32 kt
- 0-1 km storm-relative helicity
- 97 m²/s²
- 0-3 km storm-relative helicity
- 133 m²/s²
- Significant tornado parameter
- 0.5
- Supercell composite
- 3.3
The text
As transmitted.
809
WUUS54 KAMA 042132
SVRAMA
TXC205-341-359-375-042300-
/O.NEW.KAMA.SV.W.0185.210704T2132Z-210704T2300Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Amarillo TX
432 PM CDT Sun Jul 4 2021
The National Weather Service in Amarillo has issued a
* Severe Thunderstorm Warning for...
Northeastern Oldham County in the Panhandle of Texas...
Northwestern Potter County in the Panhandle of Texas...
Western Moore County in the Panhandle of Texas...
Southeastern Hartley County in the Panhandle of Texas...
* Until 600 PM CDT.
* At 432 PM CDT, a severe thunderstorm was located near Dumas, moving
southwest at 10 mph.
HAZARD...60 mph wind gusts and half dollar size hail.
SOURCE...Radar indicated.
IMPACT...Minor damage to roofs, siding, and trees is possible.
Hail damage to vehicles is expected.
* Locations impacted include...
Dumas, Hartley, Cactus, Channing, Four Way, Boys Ranch, Masterson
and Valley De Oro.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 3604 10196 3577 10175 3534 10223 3583 10264
TIME...MOT...LOC 2132Z 062DEG 11KT 3584 10191
HAIL...1.25IN
WIND...60MPH
$$
LG6 follow-up statements
701
WWUS54 KAMA 042140
SVSAMA
Severe Weather Statement
National Weather Service Amarillo TX
440 PM CDT Sun Jul 4 2021
TXC205-341-359-375-042300-
/O.CON.KAMA.SV.W.0185.000000T0000Z-210704T2300Z/
Oldham TX-Potter TX-Moore TX-Hartley TX-
440 PM CDT Sun Jul 4 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 600 PM CDT
FOR NORTHEASTERN OLDHAM...NORTHWESTERN POTTER...WESTERN MOORE AND
SOUTHEASTERN HARTLEY COUNTIES...
At 440 PM CDT, a severe thunderstorm was located near Dumas, moving
southwest at 15 mph.
HAZARD...60 mph wind gusts and half dollar size hail.
SOURCE...Radar indicated.
IMPACT...Minor damage to roofs, siding, and trees is possible. Hail
damage to vehicles is expected.
Locations impacted include...
Dumas, Hartley, Cactus, Channing, Four Way, Boys Ranch, Masterson and
Valley De Oro.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 3604 10196 3577 10175 3534 10223 3583 10264
TIME...MOT...LOC 2140Z 062DEG 11KT 3583 10194
HAIL...1.25IN
WIND...60MPH
$$
LG727
WWUS54 KAMA 042148
SVSAMA
Severe Weather Statement
National Weather Service Amarillo TX
448 PM CDT Sun Jul 4 2021
TXC205-341-359-375-042300-
/O.CON.KAMA.SV.W.0185.000000T0000Z-210704T2300Z/
Oldham TX-Potter TX-Moore TX-Hartley TX-
448 PM CDT Sun Jul 4 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 600 PM CDT
FOR NORTHEASTERN OLDHAM...NORTHWESTERN POTTER...WESTERN MOORE AND
SOUTHEASTERN HARTLEY COUNTIES...
At 448 PM CDT, a severe thunderstorm was located near Dumas, moving
southwest at 15 mph.
HAZARD...60 mph wind gusts and half dollar size hail.
SOURCE...Public.
IMPACT...Minor damage to roofs, siding, and trees is possible. Hail
damage to vehicles is expected.
Locations impacted include...
Dumas, Hartley, Cactus, Channing, Four Way, Boys Ranch, Masterson and
Valley De Oro.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 3604 10196 3577 10175 3534 10223 3583 10264
TIME...MOT...LOC 2148Z 062DEG 11KT 3582 10197
HAIL...1.25IN
WIND...60MPH
$$
LG198
WWUS54 KAMA 042203
SVSAMA
Severe Weather Statement
National Weather Service Amarillo TX
503 PM CDT Sun Jul 4 2021
TXC205-341-359-375-042300-
/O.CON.KAMA.SV.W.0185.000000T0000Z-210704T2300Z/
Oldham TX-Potter TX-Moore TX-Hartley TX-
503 PM CDT Sun Jul 4 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 600 PM CDT
FOR NORTHEASTERN OLDHAM...NORTHWESTERN POTTER...WESTERN MOORE AND
SOUTHEASTERN HARTLEY COUNTIES...
At 503 PM CDT, a severe thunderstorm was located 5 miles southwest of
Dumas, moving southwest at 15 mph.
HAZARD...60 mph wind gusts and half dollar size hail.
SOURCE...Radar indicated.
IMPACT...Minor damage to roofs, siding, and trees is possible. Hail
damage to vehicles is expected.
Locations impacted include...
Dumas, Hartley, Channing, Four Way, Valley De Oro, Boys Ranch and
Masterson.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 3601 10205 3571 10181 3534 10223 3583 10264
TIME...MOT...LOC 2203Z 062DEG 11KT 3580 10202
HAIL...1.25IN
WIND...60MPH
$$
LG172
WWUS54 KAMA 042221
SVSAMA
Severe Weather Statement
National Weather Service Amarillo TX
521 PM CDT Sun Jul 4 2021
TXC205-341-359-375-042300-
/O.CON.KAMA.SV.W.0185.000000T0000Z-210704T2300Z/
Oldham TX-Potter TX-Moore TX-Hartley TX-
521 PM CDT Sun Jul 4 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 600 PM CDT
FOR NORTHEASTERN OLDHAM...NORTHWESTERN POTTER...WESTERN MOORE AND
SOUTHEASTERN HARTLEY COUNTIES...
At 521 PM CDT, a severe thunderstorm was located 8 miles northwest of
Four Way, or 8 miles southwest of Dumas, moving southwest at 10 mph.
HAZARD...60 mph wind gusts and half dollar size hail.
SOURCE...Radar indicated.
IMPACT...Minor damage to roofs, siding, and trees is possible. Hail
damage to vehicles is expected.
Locations impacted include...
Dumas, Hartley, Channing, Four Way, Valley De Oro, Boys Ranch and
Masterson.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 3601 10205 3571 10181 3534 10223 3583 10264
TIME...MOT...LOC 2221Z 060DEG 10KT 3578 10207
HAIL...1.25IN
WIND...60MPH
$$
LG490
WWUS54 KAMA 042228
SVSAMA
Severe Weather Statement
National Weather Service Amarillo TX
528 PM CDT Sun Jul 4 2021
TXC205-341-359-375-042300-
/O.CON.KAMA.SV.W.0185.000000T0000Z-210704T2300Z/
Oldham TX-Potter TX-Moore TX-Hartley TX-
528 PM CDT Sun Jul 4 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 600 PM CDT
FOR NORTHEASTERN OLDHAM...NORTHWESTERN POTTER...SOUTHWESTERN MOORE
AND SOUTHEASTERN HARTLEY COUNTIES...
At 527 PM CDT, a severe thunderstorm was located 9 miles northwest of
Four Way, or 9 miles southwest of Dumas, moving southwest at 15 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Minor damage to roofs, siding, and trees is possible. Hail
damage to vehicles is expected.
Locations impacted include...
Hartley, Channing, Boys Ranch, Masterson, Four Way and Valley De Oro.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 3599 10213 3565 10188 3534 10223 3583 10264
TIME...MOT...LOC 2227Z 062DEG 11KT 3577 10209
HAIL...1.00IN
WIND...60MPH
$$
LG131
WWUS54 KAMA 042237
SVSAMA
Severe Weather Statement
National Weather Service Amarillo TX
537 PM CDT Sun Jul 4 2021
TXC205-341-359-375-042246-
/O.CAN.KAMA.SV.W.0185.000000T0000Z-210704T2300Z/
Oldham TX-Potter TX-Moore TX-Hartley TX-
537 PM CDT Sun Jul 4 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN OLDHAM...
NORTHWESTERN POTTER...SOUTHWESTERN MOORE AND SOUTHEASTERN HARTLEY
COUNTIES IS CANCELLED...
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning has been cancelled. However gusty winds and
heavy rain are still possible with this thunderstorm.
A Severe Thunderstorm Watch remains in effect until 1100 PM CDT for
the Panhandle of Texas.
Remember, a Severe Thunderstorm Warning still remains in effect for
Hartley County until 600 pm.
LAT...LON 3599 10213 3565 10188 3534 10223 3583 10264
TIME...MOT...LOC 2232Z 062DEG 11KT 3576 10212
$$
LGThe office that day
Everything else NWS Amarillo, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 4, 1:28 AM CDT | Special Weather Statement | AMA | Dallam | 32 min |
| Jul 4, 11:42 AM CDT | Special Weather Statement | AMA | Roberts | 48 min |
| Jul 4, 12:34 PM CDT | Special Weather Statement | AMA | Gray | 41 min |
| Jul 4, 2:42 PM CDT | Special Weather Statement | AMA | Sherman | 48 min |
| Jul 4, 3:13 PM CDT | Special Weather Statement | AMA | Sherman | 32 min |
| Jul 4, 3:21 PM CDT | Severe Thunderstorm Warning | AMA | Dallam, Hartley, Moore, Sherman | 54 min |
| Jul 4, 3:50 PM CDT | Areal Flood Advisory | AMA | Dallam | 3 hr |
| Jul 4, 4:14 PM CDT | Severe Thunderstorm Warning | AMA | Dallam, Hartley, Sherman | 91 min |
| Jul 4, 4:46 PM CDT | Areal Flood Advisory | AMA | Moore | 3 hr |
| Jul 4, 4:49 PM CDT | Areal Flood Advisory | AMA | Sherman | 2 hr |
| Jul 4, 5:03 PM CDT | Areal Flood Advisory | AMA | Dallam, Hartley | 4 hr |
| Jul 4, 5:39 PM CDT | Flash Flood Warning | AMA | Dallam, Hartley | 3 hr |
| Jul 4, 5:44 PM CDT | Severe Thunderstorm Warning | AMA | Dallam, Hartley, Moore, Sherman | 91 min |
| Jul 4, 6:20 PM CDT | Severe Thunderstorm Warning | AMA | Hansford, Sherman | 85 min |
| Jul 4, 6:51 PM CDT | Special Weather Statement | AMA | Dallam | 24 min |
| Jul 4, 6:59 PM CDT | Severe Thunderstorm Warning | AMA | Dallam | 91 min |
Nearby
Severe Thunderstorm Warnings in Texas, 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.