Flash Flood Warning 193, NWS Flagstaff, AZ

Issued

Aug 17, 2021, 4:06 PM MST (23:06 UTC)

Expired

Aug 17, 2021, 7:15 PM MST

In force

3 hr

Issued by

NWS Flagstaff, AZ

Area

Storm-based polygon

Damage threat

Considerable

Flood severity

None

Counties Coconino County, AZ, Yavapai County, AZ

The Flagstaff radar (KFSX), 75 km from the middle of the area, began a volume at 23:09 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.

001 
WGUS55 KFGZ 172306
FFWFGZ
AZC005-025-180215-
/O.NEW.KFGZ.FF.W.0193.210817T2306Z-210818T0215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Flagstaff AZ
406 PM MST Tue Aug 17 2021

The National Weather Service in Flagstaff has issued a

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

* Until 715 PM MST.

* At 406 PM MST, Doppler radar and automated rain gauges indicated 
  thunderstorms producing heavy rain in Sedona and westward. Between 
  0.5 and 1.5 inches of rain have fallen. Additional rainfall 
  amounts of 0.5 to 1.5 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 and automated gauges.

  IMPACT...Life-threatening flash flooding of low-water
           crossings, creeks, normally dry washes and roads.

* Some locations that will experience flash flooding include...
  Sedona, Page Springs, Red Rock State Park and Tuzigoot National 
  Monument.

This includes the following swimming holes...
Crescent Moon Ranch, Mormons Crossing and Parsons Spring along 
Sycamore Creek.

This includes the following highways...
	State Route 89A between mile markers 359 and 372.

This includes the following streams and drainages...
  Verde River, Sycamore Creek, Oak Creek, Dry Creek, Spring Creek, 
  Turkey Creek, Coffee Creek and Railroad Draw.

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.

&&

LAT...LON 3500 11189 3492 11176 3470 11187 3486 11218

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

$$

TPS

781 
WGUS75 KFGZ 180031
FFSFGZ

Flash Flood Statement
National Weather Service Flagstaff AZ
531 PM MST Tue Aug 17 2021

AZC005-025-180215-
/O.CON.KFGZ.FF.W.0193.000000T0000Z-210818T0215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Coconino AZ-Yavapai AZ-
531 PM MST Tue Aug 17 2021

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 715 PM MST THIS 
EVENING FOR COCONINO AND YAVAPAI COUNTIES...

At 529 PM MST, Doppler radar indicated thunderstorms producing heavy 
rain west of Sedona have moved out of the area. However, flash 
flooding remains a threat. Between 1 and 2.25 inches of rain have 
fallen. Only light additional rainfall amounts are expected, up to 
0.25 inches.

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

SOURCE...Radar and automated gauges.

IMPACT...Life-threatening flash flooding of low-water crossings,
         creeks, normally dry washes and roads.

Some locations that will experience flash flooding include...
  Sedona, Page Springs, Red Rock State Park and Tuzigoot National 
  Monument.

This includes the following swimming holes...
Crescent Moon Ranch, Mormons Crossing and Parsons Spring along 
Sycamore Creek.

This includes the following highways...
	State Route 89A between mile markers 359 and 372.

This includes the following streams and drainages...
  Verde River, Sycamore Creek, Oak Creek, Dry Creek, Spring Creek, 
  Turkey Creek, Coffee Creek and Railroad Draw.

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.

&&

LAT...LON 3500 11189 3492 11176 3470 11187 3486 11218

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

$$

TPS

795 
WGUS75 KFGZ 180222
FFSFGZ

Flash Flood Statement
National Weather Service Flagstaff AZ
722 PM MST Tue Aug 17 2021

AZC005-025-180232-
/O.EXP.KFGZ.FF.W.0193.000000T0000Z-210818T0215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Coconino AZ-Yavapai AZ-
722 PM MST Tue Aug 17 2021

...FLASH FLOOD WARNING HAS EXPIRED FOR COCONINO AND YAVAPAI COUNTIES 
FROM WEST SEDONA TO PAGE SPRINGS...

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 for portions 
of north central Arizona, northeast Arizona and west central Arizona.

LAT...LON 3500 11189 3492 11176 3470 11187 3486 11218

$$

JJ

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.