Alert archive / Texas / Flash Flood Warnings in 2021
Flash Flood Warning 17, NWS Amarillo, TX
NWS Amarillo, TX issued this flash flood warning at Aug 29, 2021, 6:19 PM CDT for Potter County, Randall County, Texas. It was in force for 105 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
- Aug 29, 2021, 6:19 PM CDT (23:19 UTC)
- Expired
- Aug 29, 2021, 8:04 PM CDT
- In force
- 105 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), 12 km from the middle of the area, began a volume at 23:19 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 12:00Z, 11.3 hours before the alert went out and 13 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
- 472 J/kg
- Mixed-layer CIN
- -143 J/kg
- Mixed-layer LCL
- 1228 m above ground
- 0-6 km bulk shear
- 6 kt
- 0-1 km storm-relative helicity
- -23 m²/s²
- 0-3 km storm-relative helicity
- 57 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.0
The text
As transmitted.
182
WGUS54 KAMA 292319
FFWAMA
TXC375-381-300215-
/O.NEW.KAMA.FF.W.0017.210829T2319Z-210830T0215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Amarillo TX
619 PM CDT Sun Aug 29 2021
The National Weather Service in Amarillo has issued a
* Flash Flood Warning for...
Southeastern Potter County in the panhandle of Texas...
North Central Randall County in the panhandle of Texas...
* Until 915 PM CDT.
* At 619 PM CDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Flash flooding is ongoing or
expected to begin shortly.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar.
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.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Be aware of your surroundings and do not drive on flooded roads.
&&
LAT...LON 3533 10193 3536 10181 3533 10171 3527 10167
3513 10183 3510 10191 3515 10196
FLASH FLOOD...RADAR INDICATED
$$
Beat1 follow-up statement
129
WGUS74 KAMA 300104
FFSAMA
Flash Flood Statement
National Weather Service Amarillo TX
804 PM CDT Sun Aug 29 2021
TXC375-381-300114-
/O.CAN.KAMA.FF.W.0017.000000T0000Z-210830T0215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Potter TX-Randall TX-
804 PM CDT Sun Aug 29 2021
...FLASH FLOOD WARNING IS CANCELLED FOR SOUTHEASTERN POTTER AND
NORTH CENTRAL RANDALL COUNTIES...
The heavy rain has ended. Flooding is no longer expected to pose a
threat. Please continue to heed remaining road closures.
LAT...LON 3533 10193 3536 10181 3533 10171 3527 10167
3513 10183 3510 10191 3515 10196
$$
BeatThe office that day
Everything else NWS Amarillo, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 28, 8:18 PM CDT | Special Weather Statement | AMA | Moore | 27 min |
| Aug 29, 2:09 PM CDT | Special Weather Statement | AMA | Oldham | 36 min |
| Aug 29, 2:28 PM CDT | Special Weather Statement | AMA | Potter | 32 min |
| Aug 29, 2:36 PM CDT | Severe Thunderstorm Warning | AMA | Potter | 39 min |
| Aug 29, 2:49 PM CDT | Special Weather Statement | AMA | Ochiltree | 26 min |
| Aug 29, 3:06 PM CDT | Areal Flood Advisory | AMA | Ochiltree | 3 hr |
| Aug 29, 3:17 PM CDT | Special Weather Statement | AMA | Hutchinson | 28 min |
| Aug 29, 3:55 PM CDT | Special Weather Statement | AMA | Hansford | 35 min |
| Aug 29, 4:54 PM CDT | Areal Flood Advisory | AMA | Hansford, Hutchinson, Ochiltree, Roberts | 3 hr |
| Aug 29, 6:12 PM CDT | Areal Flood Advisory | AMA | Potter, Randall | 7 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.