Flash Flood Warning 206, NWS Flagstaff, AZ

Issued

Aug 18, 2021, 12:51 PM MST (19:51 UTC)

Expired

Aug 18, 2021, 4:45 PM MST

In force

4 hr

Issued by

NWS Flagstaff, AZ

Area

Storm-based polygon

Damage threat

Considerable

Flood severity

None

Counties Gila County, AZ, Yavapai County, AZ

The Flagstaff radar (KFSX), 71 km from the middle of the area, began a volume at 19:51 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.

945 
WGUS55 KFGZ 181951
FFWFGZ
AZC007-025-182345-
/O.NEW.KFGZ.FF.W.0206.210818T1951Z-210818T2345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Flagstaff AZ
1251 PM MST Wed Aug 18 2021

The National Weather Service in Flagstaff has issued a

* Flash Flood Warning for...
  Gila County in east central Arizona...
  Yavapai County in west central Arizona...

* Until 445 PM MST.

* At 1250 PM MST, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between 1 and 2.5 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...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...
  Childs Power Plant and Horseshoe Reservoir.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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.

Avoid recently burned areas and downstream locations. 
Life-threatening flooding of creeks, roads and normally dry washes 
will occur. Rockslides and mudslides will likely occur in steep 
terrain.

&&

LAT...LON 3401 11181 3437 11174 3442 11157 3443 11156
      3424 11153 3400 11166 3400 11168 3400 11169
      3400 11170 3400 11171 3400 11172 3400 11173
      3400 11174 3400 11175 3401 11179

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

$$

EL

749 
WGUS75 KFGZ 182340
FFSFGZ

Flash Flood Statement
National Weather Service Flagstaff AZ
440 PM MST Wed Aug 18 2021

AZC007-025-182350-
/O.EXP.KFGZ.FF.W.0206.000000T0000Z-210818T2345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Gila AZ-Yavapai AZ-
440 PM MST Wed Aug 18 2021

...FLASH FLOOD WARNING WILL EXPIRE AT 445 PM MST THIS AFTERNOON FOR 
GILA AND YAVAPAI COUNTIES...

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 1100 PM MST Wednesday 
for portions of east central Arizona, north central Arizona, 
northeast Arizona and west central Arizona.

A Flash Flood Watch remains in effect until 1100 PM MST Wednesday 
for a portion of west central Arizona.

LAT...LON 3401 11181 3437 11174 3442 11157 3443 11156
      3424 11153 3400 11166 3400 11168 3400 11169
      3400 11170 3400 11171 3400 11172 3400 11173
      3400 11174 3400 11175 3401 11179

$$

DB

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.