Alert archive / Arizona / Flash Flood Warnings in 2012

Flash Flood Warning 4, NWS Flagstaff, AZ

July 14, 2012Coconino County, Arizona

NWS Flagstaff, AZ issued this flash flood warning at Jul 14, 2012, 2:15 PM MST for Coconino County, Arizona. It was in force for 2 hr. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Jul 14, 2012, 2:15 PM MST (21:15 UTC)
Expired: Jul 14, 2012, 4:15 PM MST
In force: 2 hr
Issued by: NWS Flagstaff, AZ
Area: Storm-based polygon
Flood severity: None

County Coconino County, AZ

The radar

The Las Vegas radar (KESX), 161 km from the middle of the area, began a volume at 21:17 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.

The nearest sounding before it

Flgstf/Belemont, AZ (KFGZ), launched 12:00Z, 9.3 hours before the alert went out and 156 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 69 J/kg
Mixed-layer CIN: -26 J/kg
Mixed-layer LCL: 715 m above ground
0-6 km bulk shear: 22 kt
0-1 km storm-relative helicity: 107 m²/s²
0-3 km storm-relative helicity: 195 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

076 
WGUS55 KFGZ 142115
FFWFGZ
AZC005-142315-
/O.NEW.KFGZ.FF.W.0004.120714T2115Z-120714T2315Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE FLAGSTAFF AZ
215 PM MST SAT JUL 14 2012

THE NATIONAL WEATHER SERVICE IN FLAGSTAFF HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  WEST CENTRAL COCONINO COUNTY IN NORTH CENTRAL ARIZONA...

* UNTIL 415 PM MST

* AT 207 PM MST...RADAR INDICATED FLASH FLOODING FROM A LINE OF 
  STRONG THUNDERSTORMS OVER NORTHERN PORTIONS OF THE HUALAPAI
  RESERVATION AND WESTERN PORTIONS OF THE HAVASUPAI RESERVATION
  IN WEST CENTRAL COCONINO COUNTY. TWO TO THREE INCHES OF
  RAIN HAS FALLEN IN THE PAST FEW HOURS IN THIS AREA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS INCLUDES THE FOLLOWING STREAMS AND DRAINAGES...MOHAWK 
CANYON...TWO HUNDRED AND FIVEMILE CREEK...TWO HUNDRED AND 
FIFTEENMILE CREEK...DIAMOND CREEK...PROSPECT VALLEY...HUNDRED AND 
NINETYTHREE MILE CREEK...ALBERS WASH AND LITTLE COYOTE CANYON.

A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.
IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY.
RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE
PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT ATTEMPT TO CROSS
SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR BY
AUTOMOBILE.

&&

LAT...LON 3609 11333 3611 11328 3610 11323 3614 11321
      3628 11285 3615 11281 3573 11333

$$

DJO

1 follow-up statement

816 
WGUS75 KFGZ 142314
FFSFGZ

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE FLAGSTAFF AZ
414 PM MST SAT JUL 14 2012

AZC005-142321-
/O.EXP.KFGZ.FF.W.0004.000000T0000Z-120714T2315Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
COCONINO AZ-
414 PM MST SAT JUL 14 2012

...THE FLASH FLOOD WARNING WILL EXPIRE AT 415 PM MST FOR WEST CENTRAL
COCONINO COUNTY...

THE FLASH FLOOD WARNING FOR NORTHERN PORTIONS OF THE HUALAPAI
RESERVATION AND WESTERN PORTIONS OF THE HAVASUPAI RESERVATION
WILL BE ALLOWED TO EXPIRE AT 415 PM MST. RAINFALL IN THE AREA HAS
DIMINISHED AND STREAM LEVELS ARE EXPECTED TO CONTINUE TO SUBSIDE
THIS AFTERNOON AND EVENING.

LAT...LON 3609 11333 3611 11328 3610 11323 3614 11321
      3628 11285 3615 11281 3573 11333

$$

DJO

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 14, 7:05 AM MST	Flash Flood Warning	FGZ	Yavapai	3 hr
Jul 14, 10:51 AM MST	Areal Flood Advisory	FGZ	Yavapai	4 hr
Jul 14, 1:14 PM MST	Areal Flood Advisory	FGZ	Yavapai	3 hr
Jul 14, 2:02 PM MST	Severe Thunderstorm Warning	FGZ	Yavapai	28 min
Jul 14, 2:44 PM MST	Areal Flood Advisory	FGZ	Yavapai	4 hr
Jul 14, 2:58 PM MST	Severe Thunderstorm Warning	FGZ	Yavapai	34 min
Jul 14, 3:26 PM MST	Areal Flood Advisory	FGZ	Coconino	2 hr
Jul 14, 3:35 PM MST	Special Weather Statement	FGZ	Yavapai	40 min
Jul 14, 3:54 PM MST	Flash Flood Warning	FGZ	Yavapai	4 hr

Nearby

Flash Flood Warnings in Arizona, 2012 Every flash flood warning in 2012

Sources

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.