Alert archive / Texas / Flash Flood Warnings in 2021
Flash Flood Warning 16, NWS Amarillo, TX
NWS Amarillo, TX issued this flash flood warning at Aug 21, 2021, 4:04 PM CDT for Potter County, Randall County, Texas. It was in force for 90 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
- Aug 21, 2021, 4:04 PM CDT (21:04 UTC)
- Expired
- Aug 21, 2021, 5:34 PM CDT
- In force
- 90 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), 20 km from the middle of the area, began a volume at 21:05 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 |
|---|---|---|---|
| Aug 21, 4:09 PM CDT | FLOOD | 4 Wnw Amarillo, TX | WATER FILLING UP WEST HILL PARK WITH SOME ROADS AROUND THE PARK POTENTIALLY IMPASSABLE. |
| Aug 21, 4:09 PM CDT | FLOOD | 5 W Amarillo, TX | HEAVY FLOODING UNDER THE BRIDGE AT I-40 AND BELL WITH TRAFFIC AT A STANDSTILL IN THE WEST BOUND LANE. |
| Aug 21, 4:36 PM CDT | FLASH FLOOD | 7 Wsw Amarillo, TX | ROAD CLOSED FROM 45TH TO HILLSIDE ON COULTER WITH 3-4 FEET OF WATER. FIREFIGHTERS ARE PERFORMING MULTIPLE HIGH WATER RESCUES WITH MULTIPLE VEHICLES STRANDED. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Amarillo Airport, TX (KAMA), launched 12:00Z, 9.1 hours before the alert went out and 21 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
- 611 J/kg
- Mixed-layer CIN
- -143 J/kg
- Mixed-layer LCL
- 1642 m above ground
- 0-6 km bulk shear
- 9 kt
- 0-1 km storm-relative helicity
- 16 m²/s²
- 0-3 km storm-relative helicity
- 76 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
304
WGUS54 KAMA 212104
FFWAMA
TXC375-381-220000-
/O.NEW.KAMA.FF.W.0016.210821T2104Z-210822T0000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Amarillo TX
404 PM CDT Sat Aug 21 2021
The National Weather Service in Amarillo has issued a
* Flash Flood Warning for...
Southeastern Potter County in the panhandle of Texas...
Northwestern Randall County in the panhandle of Texas...
* Until 700 PM CDT.
* At 404 PM CDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Between 1 and 2 inches of rain
have fallen. Additional rainfall amounts of 1 to 2 inches are
possible in 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, Canyon, Mescalero Park and Bushland.
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 3518 10210 3521 10209 3530 10200 3538 10183
3535 10167 3530 10162 3529 10162 3524 10162
3518 10165 3509 10178 3502 10191 3498 10204
3500 10211 3502 10214 3505 10216 3509 10214
FLASH FLOOD...RADAR INDICATED
$$
Guerrero2 follow-up statements
623
WGUS74 KAMA 212221
FFSAMA
Flash Flood Statement
National Weather Service Amarillo TX
521 PM CDT Sat Aug 21 2021
TXC375-381-220000-
/O.CON.KAMA.FF.W.0016.000000T0000Z-210822T0000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Potter TX-Randall TX-
521 PM CDT Sat Aug 21 2021
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 7 PM CDT THIS EVENING
FOR SOUTHEASTERN POTTER AND NORTHWESTERN RANDALL COUNTIES...
At 521 PM CDT, Doppler radar indicated thunderstorms producing heavy
rain across the warned area. Between 1 and 2 inches of rain have
fallen. Additional rainfall amounts of 1 to 2 inches are possible in
the warned area. Flash flooding is ongoing or expected to begin
shortly.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar.
IMPACT...Flash flooding of small creeks and streams, urban areas,
highways, streets and underpasses as well as other poor
drainage and low-lying areas.
Some locations that will experience flash flooding include...
Amarillo, Canyon and Mescalero Park.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Be aware of your surroundings and do not drive on flooded roads.
&&
LAT...LON 3514 10200 3520 10189 3524 10177 3525 10168
3523 10164 3518 10165 3509 10178 3502 10191
3498 10204 3500 10211 3501 10212 3504 10211
3507 10209
FLASH FLOOD...RADAR INDICATED
$$
Guerrero830
WGUS74 KAMA 212234
FFSAMA
Flash Flood Statement
National Weather Service Amarillo TX
534 PM CDT Sat Aug 21 2021
TXC375-381-212244-
/O.CAN.KAMA.FF.W.0016.000000T0000Z-210822T0000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Potter TX-Randall TX-
534 PM CDT Sat Aug 21 2021
...FLASH FLOOD WARNING IS CANCELLED FOR SOUTHEASTERN POTTER AND
NORTHWESTERN 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 3514 10200 3520 10189 3524 10177 3525 10168
3523 10164 3518 10165 3509 10178 3502 10191
3498 10204 3500 10211 3501 10212 3504 10211
3507 10209
$$
GuerreroThe office that day
Everything else NWS Amarillo, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 21, 2:38 PM CDT | Special Weather Statement | AMA | Hemphill | 67 min |
| Aug 21, 2:43 PM CDT | Special Weather Statement | AMA | Potter | 62 min |
| Aug 21, 2:57 PM CDT | Severe Thunderstorm Warning | AMA | Hemphill, Lipscomb, Ochiltree, Roberts | 93 min |
| Aug 21, 3:32 PM CDT | Severe Thunderstorm Warning | AMA | Carson, Hutchinson, Moore, Potter | 88 min |
| Aug 21, 3:42 PM CDT | Areal Flood Advisory | AMA | Hemphill | 3 hr |
| Aug 21, 3:42 PM CDT | Severe Thunderstorm Warning | AMA | Armstrong, Carson, Potter, Randall | 69 min |
| Aug 21, 3:54 PM CDT | Areal Flood Advisory | AMA | Potter, Randall | 10 min |
| Aug 21, 4:15 PM CDT | Severe Thunderstorm Warning | AMA | Lipscomb, Ochiltree | 90 min |
| Aug 21, 4:33 PM CDT | Severe Thunderstorm Warning | AMA | Hansford, Hutchinson, Ochiltree, Roberts | 70 min |
| Aug 21, 4:44 PM CDT | Special Weather Statement | AMA | Sherman | 61 min |
| Aug 21, 5:14 PM CDT | Severe Thunderstorm Warning | AMA | Armstrong, Carson, Potter, Randall | 91 min |
| Aug 21, 5:20 PM CDT | Severe Thunderstorm Warning | AMA | Hansford, Ochiltree, Sherman | 85 min |
| Aug 21, 6:18 PM CDT | Areal Flood Advisory | AMA | Armstrong, Randall | 85 min |
| Aug 21, 6:18 PM CDT | Special Weather Statement | AMA | Hemphill | 27 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.