Alert archive / Texas / Flash Flood Warnings in 2021
Flash Flood Warning 13, NWS Amarillo, TX
NWS Amarillo, TX issued this flash flood warning at Jul 17, 2021, 7:40 PM CDT for Potter County, Randall County, Texas. It was in force for 99 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Jul 17, 2021, 7:40 PM CDT (00:40 UTC)
- Expired
- Jul 17, 2021, 9:19 PM CDT
- In force
- 99 min
- Issued by
- NWS Amarillo, TX
- Area
- Storm-based polygon
- Flood severity
- None
Counties Potter County, TX, Randall County, TX
The radar
The Amarillo radar (KAMA), 23 km from the middle of the area, began a volume at 00:40 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
Dodge City, (KDDC), launched 00:00Z, 0.7 hours before the alert went out and 339 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
- 905 J/kg
- Mixed-layer CIN
- -9 J/kg
- Mixed-layer LCL
- 1829 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 20 m²/s²
- 0-3 km storm-relative helicity
- 90 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.3
The text
As transmitted.
884
WGUS54 KAMA 180040
FFWAMA
TXC375-381-180245-
/O.NEW.KAMA.FF.W.0013.210718T0040Z-210718T0245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Amarillo TX
740 PM CDT Sat Jul 17 2021
The National Weather Service in Amarillo has issued a
* Flash Flood Warning for...
South Central Potter County in the panhandle of Texas...
North Central Randall County in the panhandle of Texas...
* Until 945 PM CDT.
* At 740 PM CDT, the public reported thunderstorms producing heavy
rain in Bishop Hills Estates. Between 2 and 3 inches of rain have
fallen. The expected rainfall rate is 1 to 1.5 inches in 1 hour.
Additional rainfall amounts of 1 to 2 inches are possible in the
warned area. Flash flooding is already occurring.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Public reported.
IMPACT...Flash flooding of small creeks and streams, urban
areas, highways, streets and underpasses as well as
other poor drainage and low-lying areas.
* Some locations that will experience flash flooding include...
Amarillo and Bushland.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Be especially cautious at night when it is harder to recognize the
dangers of flooding.
Be aware of your surroundings and do not drive on flooded roads.
Stay away or be swept away. River banks and culverts can become
unstable and unsafe.
&&
LAT...LON 3520 10208 3524 10207 3529 10203 3534 10198
3536 10188 3535 10184 3531 10182 3526 10183
3523 10184 3521 10186 3518 10189 3516 10191
3514 10193 3512 10195 3510 10198 3509 10201
3509 10205 3511 10206 3515 10207
FLASH FLOOD...OBSERVED
EXPECTED RAINFALL...1-1.5 INCHES IN 1 HOUR
$$
DGW1 follow-up statement
978
WGUS74 KAMA 180219
FFSAMA
Flash Flood Statement
National Weather Service Amarillo TX
919 PM CDT Sat Jul 17 2021
TXC375-381-180229-
/O.CAN.KAMA.FF.W.0013.000000T0000Z-210718T0245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Potter TX-Randall TX-
919 PM CDT Sat Jul 17 2021
...FLASH FLOOD WARNING IS CANCELLED FOR SOUTH CENTRAL POTTER AND
NORTH CENTRAL RANDALL COUNTIES...
Flood waters have receded. The heavy rain has ended. Flooding is no
longer expected to pose a threat. Please continue to heed remaining
road closures.
LAT...LON 3520 10208 3524 10207 3529 10203 3534 10198
3536 10188 3535 10184 3531 10182 3526 10183
3523 10184 3521 10186 3518 10189 3516 10191
3514 10193 3512 10195 3510 10198 3509 10201
3509 10205 3511 10206 3515 10207
$$
DGWThe office that day
Everything else NWS Amarillo, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 17, 7:04 PM CDT | Severe Thunderstorm Warning | AMA | Potter, Randall | 71 min |
| Jul 17, 7:13 PM CDT | Severe Thunderstorm Warning | AMA | Deaf Smith, Randall | 62 min |
| Jul 17, 7:25 PM CDT | Special Weather Statement | AMA | Randall | 35 min |
| Jul 17, 7:51 PM CDT | Severe Thunderstorm Warning | AMA | Deaf Smith, Randall | 54 min |
| Jul 17, 8:17 PM CDT | Areal Flood Advisory | AMA | Deaf Smith, Randall | 3 hr |
| Jul 17, 8:47 PM CDT | Special Weather Statement | AMA | Deaf Smith | 43 min |
| Jul 18, 3:26 AM CDT | Areal Flood Advisory | AMA | Hemphill, Lipscomb | 3 hr |
| Jul 18, 4:23 PM CDT | Severe Thunderstorm Warning | AMA | Hansford, Ochiltree | 67 min |
| Jul 18, 4:47 PM CDT | Special Weather Statement | AMA | Lipscomb | 28 min |
| Jul 18, 5:19 PM CDT | Special Weather Statement | AMA | Lipscomb, Ochiltree | 56 min |
| Jul 18, 5:59 PM CDT | Special Weather Statement | AMA | Hutchinson | 31 min |
| Jul 18, 6:07 PM CDT | Special Weather Statement | AMA | Hemphill, Roberts | 53 min |
| Jul 18, 6:45 PM CDT | Special Weather Statement | AMA | Carson | 45 min |
| Jul 18, 6:55 PM CDT | Special Weather Statement | AMA | Gray, Wheeler | 65 min |
Nearby
Flash Flood Warnings in Texas, 2021Every flash flood 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.