Alert archive / Arizona / Flash Flood Warnings in 2016

Flash Flood Warning 41, NWS Flagstaff, AZ

August 5, 2016Apache County, Arizona

NWS Flagstaff, AZ issued this flash flood warning at Aug 5, 2016, 2:54 PM MST for Apache County, Arizona. It was in force for 2 hr. 2 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
Aug 5, 2016, 2:54 PM MST (21:54 UTC)
Expired
Aug 5, 2016, 5:00 PM MST
In force
2 hr
Issued by
NWS Flagstaff, AZ
Area
Storm-based polygon
Flood severity
None

County Apache County, AZ

The radar

The Flagstaff radar (KFSX), 180 km from the middle of the area, began a volume at 21:54 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.

What was reported inside it

TimeReportWhereRemark
Aug 5, 4:00 PM MSTFLASH FLOOD1 Sse Milepost 390 On H, AZCORRECTED FOR EVENT TYPE. FLOODING REPORTED ALONG HIGHWAY 191 AT MILE POST 389. TIME ESTIMATED.
Aug 5, 4:00 PM MSTHEAVY RAIN 01 Sse Milepost 390 On H, AZCORRECTED FOR LOCATION. FLOODING REPORTED ALONG HIGHWAY 191 AT MILE POST 389. TIME ESTIMATED.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Flgstf/Belemont, AZ (KFGZ), launched 12:00Z, 9.9 hours before the alert went out and 211 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Flgstf/Belemont, AZ at 12:00Z on 2016-08-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 274 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Flgstf/Belemont, AZ at 12:00Z on 2016-08-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 23 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
274 J/kg
Mixed-layer CIN
-23 J/kg
Mixed-layer LCL
843 m above ground
0-6 km bulk shear
18 kt
0-1 km storm-relative helicity
23 m²/s²
0-3 km storm-relative helicity
25 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

524 
WGUS55 KFGZ 052154
FFWFGZ
AZC001-060000-
/O.NEW.KFGZ.FF.W.0041.160805T2154Z-160806T0000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE FLAGSTAFF AZ
254 PM MST FRI AUG 5 2016

THE NATIONAL WEATHER SERVICE IN FLAGSTAFF HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  APACHE COUNTY IN NORTHEASTERN ARIZONA...

* UNTIL 500 PM MST

* AT 252 PM MST...DOPPLER RADAR INDICATED THUNDERSTORMS HAVE
  PRODUCED MORE THAN ONE AND A HALF INCHES OF RAIN IN LESS THAN ONE
  HOUR IN THIS AREA. FLASH FLOODING IS EXPECTED TO BEGIN SHORTLY.
  BENT KNEE WASH MAY CAUSE FLASH FLOODING PROBLEMS ALONG US 191 JUST
  SOUTH OF WIDE RUINS.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  WIDE RUINS.

THIS INCLUDES THE FOLLOWING STREAMS AND DRAINAGES...BENT KNEE WASH...
WIDE RUIN WASH AND OAK RIDGE WASH.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TURN AROUND...DON'T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.

MOVE TO HIGHER GROUND NOW. ACT QUICKLY TO PROTECT YOUR LIFE.

&&

LAT...LON 3542 10943 3535 10938 3531 10945 3534 10951
      3533 10959 3544 10958

$$

MOTTICE
2 follow-up statements
066 
WGUS75 KFGZ 052251
FFSFGZ

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE FLAGSTAFF AZ
351 PM MST FRI AUG 5 2016

AZC001-060000-
/O.CON.KFGZ.FF.W.0041.000000T0000Z-160806T0000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
APACHE AZ-
351 PM MST FRI AUG 5 2016

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 500 PM MST FOR
APACHE COUNTY...

AT 349 PM MST...HEAVY RAIN HAS MOVED OUT OF THE WARNING AREA.
PERIODS OF LIGHT TO MODERATE RAIN ARE EXPECTED TO CONTINUE. RUNOFF
FROM EARLIER HEAVY RAIN WILL CONTINUE TO CAUSE FLOODING.

SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
WIDE RUINS AND U.S. HIGHWAY 191.

THIS INCLUDES THE FOLLOWING STREAMS AND DRAINAGES...BENT KNEE WASH...
WIDE RUIN WASH AND OAK RIDGE WASH.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TURN AROUND...DON'T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.

REMAIN ALERT FOR FLOODING EVEN IN LOCATIONS NOT RECEIVING RAIN. DRY
WASHES...STREAMS...AND RIVERS CAN BECOME RAGING KILLER CURRENTS IN A
MATTER OF MINUTES...EVEN FROM DISTANT RAINFALL.

&&

LAT...LON 3542 10943 3535 10938 3531 10945 3534 10951
      3533 10959 3544 10958

$$

MCS
359 
WGUS75 KFGZ 052351
FFSFGZ

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE FLAGSTAFF AZ
451 PM MST FRI AUG 5 2016

AZC001-060000-
/O.EXP.KFGZ.FF.W.0041.000000T0000Z-160806T0000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
APACHE AZ-
451 PM MST FRI AUG 5 2016

...THE FLASH FLOOD WARNING FOR APACHE COUNTY WILL EXPIRE AT 500 PM
MST...

THE HEAVY RAIN HAS ENDED. FLOODING IS NO LONGER EXPECTED TO POSE A
THREAT. PLEASE CONTINUE TO HEED ANY REMAINING ROAD CLOSURES. LIGHT
TO MODERATE RAIN IS EXPECTED TO CONTINUE OVER THE NEXT 1 TO 2 HOURS
BUT IS NOT EXPECTED TO CAUSE ADDITIONAL FLOODING.

LAT...LON 3542 10943 3535 10938 3531 10945 3534 10951
      3533 10959 3544 10958

$$

MCS

The office that day

Everything else NWS Flagstaff, AZ issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 4, 5:22 PM MSTFlash Flood WarningFGZGila3 hr
Aug 5, 9:48 AM MSTFlash Flood WatchFGZApache, Coconino, Navajo10 hr
Aug 5, 10:27 AM MSTSpecial Weather StatementFGZ33 min
Aug 5, 10:49 AM MSTFlash Flood WarningFGZGila3 hr
Aug 5, 12:54 PM MSTAreal Flood AdvisoryFGZNavajo2 hr
Aug 5, 1:19 PM MSTAreal Flood AdvisoryFGZNavajo3 hr
Aug 5, 2:22 PM MSTSpecial Weather StatementFGZYavapai23 min
Aug 5, 3:25 PM MSTAreal Flood AdvisoryFGZCoconino3 hr
Aug 5, 4:43 PM MSTAreal Flood AdvisoryFGZApache, Navajo6 hr

Nearby

Flash Flood Warnings in Arizona, 2016Every flash flood warning in 2016

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.