Alert archive / Arizona / Flash Flood Warnings in 2002

Flash Flood Warning 13, NWS Flagstaff, AZ

August 5, 2002Navajo County, Arizona

NWS Flagstaff, AZ issued this flash flood warning at Aug 5, 2002, 8:47 PM MDT for Navajo County, Arizona. It was in force for 3 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: Aug 5, 2002, 8:47 PM MDT (02:47 UTC)
Expired: Aug 5, 2002, 11:45 PM MDT
In force: 3 hr
Issued by: NWS Flagstaff, AZ
Area: Counties, with a storm outline in the text

County Navajo County, AZ

The radar

The Flagstaff radar (KFSX), 84 km from the middle of the area, began a volume at 02:50 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 00:00Z, 2.8 hours before the alert went out and 168 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 2732 m above ground
0-6 km bulk shear: 29 kt
0-1 km storm-relative helicity: 54 m²/s²
0-3 km storm-relative helicity: 113 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

000 
WGUS55 KFGZ 060247
FFWFGZ
AZC017-060545-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE FLAGSTAFF AZ
742 PM MST MON AUG 5 2002

THE NATIONAL WEATHER SERVICE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  CARRIZZO CREEK AND THE TOWN OF CARRIZZO IN 
  SOUTH CENTRAL NAVAJO COUNTY IN NORTHEAST ARIZONA

* UNTIL 1045 PM MST

* AT 735 PM MST...THE NATIONAL WEATHER SERVICE STREAM GAGE ON     
  CARRIZZO CREEK LOCATED 12 MILES UPSTREAM FROM THE TOWN OF CARRIZZO 
  READ 26.9 FEET. FLOOD STAGE AT THIS GAGE IS 27.2 FEET. IN          
  ADDITION...A LINE OF THUNDERSTORMS WAS MOVING NORTHWARD ACROSS    
  THE SALT RIVER AND WILL BE OVER CARRIZZO CREEK BY 815 PM MST.  
  ADDITIONAL RAINFALL FROM THIS LINE OF THUNDERSTORMS IS EXPECTED TO 
  PRODUCE FLASH FLOODING ALONG CARRIZZO CREEK THROUGH 10 PM MST... 

 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.

LAT...LON 3414 11050 3411 11031 3428 11027 3432 11046

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 5, 8:42 PM MDT	Flash Flood Warning	FGZ	Navajo	2 hr

Nearby

Flash Flood Warnings in Arizona, 2002 Every flash flood warning in 2002

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.