Alert archive / Arizona / Flash Flood Warnings in 2004

Flash Flood Warning 13, NWS Flagstaff, AZ

September 4, 2004Gila County, Arizona

NWS Flagstaff, AZ issued this flash flood warning at Sep 4, 2004, 10:32 AM MST for Gila County, Arizona. It was in force for 58 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Sep 4, 2004, 10:32 AM MST (17:32 UTC)
Expired: Sep 4, 2004, 11:30 AM MST
In force: 58 min
Issued by: NWS Flagstaff, AZ
Area: Counties, with a storm outline in the text

County Gila County, AZ

The radar

The Flagstaff radar (KFSX), 67 km from the middle of the area, began a volume at 17:35 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

Phoenix, AZ (KPSR), launched 12:00Z, 5.5 hours before the alert went out and 86 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: 1274 J/kg
Mixed-layer CIN: -8 J/kg
Mixed-layer LCL: 1264 m above ground
0-6 km bulk shear: 40 kt
0-1 km storm-relative helicity: 29 m²/s²
0-3 km storm-relative helicity: 71 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 0.7

Open this sounding in Storm Lab

The text

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

000 
WGUS55 KFGZ 041739
FFWFGZ
AZC007-041930-
/X.NEW.KFGZ.FF.W.0002.040904T1732Z-040904T1930Z/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE FLAGSTAFF AZ
1032 AM MST SAT SEP 4 2004

THE NATIONAL WEATHER SERVICE IN FLAGSTAFF HAS CONTINUED A

* FLASH FLOOD WARNING FOR...
  WEST CENTRAL GILA COUNTY IN EAST CENTRAL ARIZONA

* UNTIL 1230 PM MST

* AT 1030 AM MST...THUNDERSTORMS ARE OCCURRING IN AND AROUND THE     
  FLASH FLOOD AREA AT THIS TIME. DOPPLER RADAR IS INDICATING         
  RAINFALL RATES OF ONE TO ONE AND A HALF INCHES PER HOUR.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  MILEPOST 230 ON SR 87.

PREVIOUS FLOODING EARLIER THIS MORNING HAS CAUSED A ROAD CLOSURE DUE 
TO MUDSLIDES. THE BEELINE HIGHWAY IS CLOSED FROM STATE ROUTE 188 TO 
THE BUSH HIGHWAY TURNOFF. 

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. IF YOUR VEHICLE STALLS, ABANDON IT IMMEDIATELY AND SEEK 
HIGHER GROUND.

TO REPORT SEVERE WEATHER HAVE THE NEAREST LAW ENFORCEMENT AGENCY
RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN
FLAGSTAFF.

LAT...LON 3398 11141 3389 11125 3399 11122 3405 11131
      3400 11134

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 4, 6:53 AM MST	Severe Thunderstorm Warning	FGZ	Gila	37 min
Sep 4, 7:15 AM MST	Tornado Warning	FGZ	Coconino, Gila, Navajo	30 min
Sep 4, 9:00 AM MST	Flash Flood Warning	FGZ	Gila	30 min
Sep 4, 10:15 AM MST	Severe Thunderstorm Warning	FGZ	Gila	45 min

Nearby

Flash Flood Warnings in Arizona, 2004 Every flash flood warning in 2004

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.