Flash Flood Warning 136, NWS Tucson, AZ

Issued

Aug 16, 2021, 6:44 PM MST (01:44 UTC)

Expired

Aug 16, 2021, 10:45 PM MST

In force

4 hr

Issued by

NWS Tucson, AZ

Area

Storm-based polygon

Damage threat

Considerable

Flood severity

None

County Graham County, AZ

The Phoenix radar (KIWA), 127 km from the middle of the area, began a volume at 01:45 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.

236 
WGUS55 KTWC 170144
FFWTWC
AZC009-170445-
/O.NEW.KTWC.FF.W.0136.210817T0144Z-210817T0445Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Tucson AZ
644 PM MST Mon Aug 16 2021

The National Weather Service in Tucson has issued a

* Flash Flood Warning for...
  West Central Graham County in southeastern Arizona...

* Until 945 PM MST.

* At 644 PM MST, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between 1 and 2.5 inches of 
  rain have fallen. Flash flooding is ongoing or expected to begin 
  shortly.

  HAZARD...Life threatening flash flooding. Thunderstorms
           producing flash flooding.

  SOURCE...Radar.

  IMPACT...Life threatening flash flooding of creeks and streams,
           urban areas, highways, streets and underpasses.

* Some locations that will experience flash flooding include...
  Calva.

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.

Remain alert for flooding even in locations not receiving rain. 
Washes, streams, and rivers can become raging killer currents in a 
matter of minutes, even from distant rainfall.

&&

LAT...LON 3336 11039 3338 11019 3314 11014 3314 11039

FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE

$$

RH

754 
WGUS55 KTWC 170431
FFWTWC
AZC009-170545-
/O.EXT.KTWC.FF.W.0136.000000T0000Z-210817T0545Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Tucson AZ
931 PM MST Mon Aug 16 2021

The National Weather Service in Tucson has extended the

* Flash Flood Warning for...
  West Central Graham County in southeastern Arizona...

* Until 1045 PM MST.

* At 931 PM MST, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between 1 and 2.5 inches of 
  rain have fallen. Flash flooding is ongoing or expected to begin 
  shortly.

  HAZARD...Life threatening flash flooding. Thunderstorms
           producing flash flooding.

  SOURCE...Radar.

  IMPACT...Life threatening flash flooding of creeks and streams,
           urban areas, highways, streets and underpasses.

* Some locations that will experience flash flooding include...
  Calva.

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.

Remain alert for flooding even in locations not receiving rain. 
Washes, streams, and rivers can become raging killer currents in a 
matter of minutes, even from distant rainfall.

&&

LAT...LON 3336 11039 3338 11019 3314 11014 3314 11039

FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE

$$

RH

791 
WGUS75 KTWC 170545
FFSTWC

Flash Flood Statement
National Weather Service Tucson AZ
1045 PM MST Mon Aug 16 2021

AZC009-170555-
/O.EXP.KTWC.FF.W.0136.000000T0000Z-210817T0545Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Graham AZ-
1045 PM MST Mon Aug 16 2021

...FLASH FLOOD WARNING HAS EXPIRED FOR WEST CENTRAL GRAHAM COUNTY...

The heavy rain has ended. Flooding is no longer expected to pose a 
threat. Please continue to heed remaining road closures.

A Flash Flood Watch remains in effect until 200 AM MST for a portion 
of Southeast Arizona.

LAT...LON 3336 11039 3338 11019 3314 11014 3314 11039

$$

JRM

Flash Flood Warnings in Arizona, 2021Every flash flood warning in 2021

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.