Flash Flood Warning 180, NWS Flagstaff, AZ

Issued

Aug 16, 2021, 2:16 PM MST (21:16 UTC)

Expired

Aug 16, 2021, 5:15 PM MST

In force

3 hr

Issued by

NWS Flagstaff, AZ

Area

Storm-based polygon

Flood severity

None

County Coconino County, AZ

The Flagstaff radar (KFSX), 71 km from the middle of the area, began a volume at 21:19 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.

781 
WGUS55 KFGZ 162116
FFWFGZ
AZC005-170015-
/O.NEW.KFGZ.FF.W.0180.210816T2116Z-210817T0015Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

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

The National Weather Service in Flagstaff has issued a

* Flash Flood Warning for...
  Coconino County in north central Arizona...

* Until 515 PM MST.

* At 216 PM MST, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between 2 and 3 inches of rain 
  have fallen. Additional rainfall amounts of 0.25 to 0.75 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 low-water crossings, creeks,
           normally dry washes and roads.

* Some locations that will experience flash flooding include...
  Walnut Canyon National Monument.

This includes the following highways...
	Interstate 40 between mile markers 209 and 210...and
	near mile marker 214.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood 
deaths occur in vehicles.

Flooding of washes and creeks will occur, some dirt roads will 
become muddy and impassable. Paved roads and underpasses could 
become flooded as well.

In hilly or mountainous terrain, there are many low water crossings 
which will become dangerous in heavy rain. Do not attempt to cross 
flooded roads. Find an alternate route.

&&

LAT...LON 3524 11143 3523 11141 3520 11141 3518 11135
      3509 11140 3511 11146 3517 11150 3522 11143

FLASH FLOOD...RADAR INDICATED

$$

DB

048 
WGUS75 KFGZ 170006
FFSFGZ

Flash Flood Statement
National Weather Service Flagstaff AZ
506 PM MST Mon Aug 16 2021

AZC005-170016-
/O.EXP.KFGZ.FF.W.0180.000000T0000Z-210817T0015Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Coconino AZ-
506 PM MST Mon Aug 16 2021

...FLASH FLOOD WARNING WILL EXPIRE AT 515 PM MST THIS AFTERNOON FOR 
COCONINO COUNTY...

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 3524 11143 3523 11141 3520 11141 3518 11135
      3509 11140 3511 11146 3517 11150 3522 11143

$$

ET

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.