Flash Flood Warning 181, NWS Flagstaff, AZ

Issued

Aug 16, 2021, 3:10 PM MST (22:10 UTC)

Expired

Aug 16, 2021, 6:15 PM MST

In force

3 hr

Issued by

NWS Flagstaff, AZ

Area

Storm-based polygon

Damage threat

Considerable

Flood severity

None

County Apache County, AZ

The Flagstaff radar (KFSX), 199 km from the middle of the area, began a volume at 22:10 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.

637 
WGUS55 KFGZ 162210
FFWFGZ
AZC001-170115-
/O.NEW.KFGZ.FF.W.0181.210816T2210Z-210817T0115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

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

The National Weather Service in Flagstaff has issued a

* Flash Flood Warning for...
  Apache County in northeastern Arizona...

* Until 615 PM MST.

* At 309 PM MST, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between 0.75 and 1.5 inches of 
  rain have fallen. Additional rainfall amounts of 0.5 to 1 inch are 
  possible in the warned area. 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 low-water
           crossings, creeks, normally dry washes and roads.

* Some locations that will experience flash flooding include...
  Hubbell Trading Post National Historic Site, Kinlichee Chapter 
  House, Cornfields Chapter House, Ganado and Navajo Reservation.

This includes the following highways...
	Highway 191 between mile markers 404 and 411.
	State Route 264 between mile markers 444 and 460.

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.

Remain alert for flooding even in locations not receiving rain. 
Normally dry washes, slot canyons and creeks can become raging 
killer currents in a matter of minutes, even from distant rainfall.

&&

LAT...LON 3584 10942 3571 10929 3564 10937 3566 10952
      3559 10952 3558 10965 3565 10975 3578 10950

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

$$

DB

335 
WGUS75 KFGZ 170107
FFSFGZ

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

AZC001-170117-
/O.EXP.KFGZ.FF.W.0181.000000T0000Z-210817T0115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Apache AZ-
607 PM MST Mon Aug 16 2021

...FLASH FLOOD WARNING WILL EXPIRE AT 615 PM MST THIS EVENING FOR 
APACHE COUNTY...

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

LAT...LON 3584 10942 3571 10929 3564 10937 3566 10952
      3559 10952 3558 10965 3565 10975 3578 10950

$$

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.