Alert archive / Arizona / Flash Flood Warnings in 2002

Flash Flood Warning 3, NWS Flagstaff, AZ

July 10, 2002Gila County, Navajo County, Arizona

NWS Flagstaff, AZ issued this flash flood warning at Jul 10, 2002, 4:20 PM MST for Gila County, 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: Jul 10, 2002, 4:20 PM MST (23:20 UTC)
Expired: Jul 10, 2002, 7:15 PM MST
In force: 3 hr
Issued by: NWS Flagstaff, AZ
Area: Counties, with a storm outline in the text

Counties Gila County, AZ, Navajo County, AZ

The radar

The Flagstaff radar (KFSX), 77 km from the middle of the area, began a volume at 23:20 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, 11.3 hours before the alert went out and 164 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: 67 J/kg
Mixed-layer CIN: -479 J/kg
Mixed-layer LCL: 2618 m above ground
0-6 km bulk shear: 10 kt
0-1 km storm-relative helicity: -7 m²/s²
0-3 km storm-relative helicity: 45 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 102320
FFWFGZ
AZC007-017-110215-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING...UPDATED TO ADD LAT/LON 
NATIONAL WEATHER SERVICE FLAGSTAFF AZ
417 PM MST WED JUL 10 2002

THE NATIONAL WEATHER SERVICE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  NORTH CENTRAL GILA COUNTY IN EAST CENTRAL ARIZONA
  SOUTHWESTERN NAVAJO COUNTY IN NORTHEAST ARIZONA
  THIS INCLUDES THE CITY OF HEBER-OVERGAARD

* UNTIL 715 PM MST

* AT 417 PM MST...WEATHER SERVICE DOPPLER RADAR INDICATED VERY HEAVY
  RAIN 30 MILES SOUTHWEST OF PINEDALE...OR ABOUT 31 MILES WEST OF
  WHITERIVER.  THE AREA OF HEAVY RAIN WAS NEARLY STATIONARY.

* THE THUNDERSTORM WITH EXCESSIVE RAINFALL WILL AFFECT OR PASS CLOSE
TO...
RURAL SOUTHWESTERN NAVAJO COUNTY AT 720 PM MST
RURAL NORTHERN GILA COUNTY AT 720 PM MST

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.

LAT...LON 3413 11082 3405 11049 3405 11015 3419 11009
          3430 11011 3441 11035 3444 11064 3430 11078

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 9, 5:11 PM MST	Flash Flood Warning	FGZ	Coconino, Gila, Navajo	5 hr
Jul 9, 5:22 PM MST	Flash Flood Warning	FGZ	Coconino, Gila, Navajo	6 hr
Jul 10, 2:28 PM MST	Flash Flood Warning	FGZ	Navajo	3 hr
Jul 10, 2:28 PM MST	Flash Flood Warning	FGZ	Navajo	107 min
Jul 10, 4:17 PM MST	Flash Flood Warning	FGZ	Gila, Navajo
Jul 10, 4:17 PM MST	Flash Flood Warning	FGZ	Gila, Navajo	118 min

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.