Alert archive / Arizona / Flash Flood Warnings in 2002

Flash Flood Warning 7, NWS Flagstaff, AZ

July 16, 2002Navajo County, Arizona

NWS Flagstaff, AZ issued this flash flood warning at Jul 16, 2002, 12:43 AM MDT for Navajo County, Arizona. It was in force for 107 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: Jul 16, 2002, 12:43 AM MDT (06:43 UTC)
Expired: Jul 16, 2002, 2:30 AM MDT
In force: 107 min
Issued by: NWS Flagstaff, AZ
Area: Counties, with a storm outline in the text

County Navajo County, AZ

The radar

The Flagstaff radar (KFSX), 69 km from the middle of the area, began a volume at 06:46 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, 6.7 hours before the alert went out and 148 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: 19 J/kg
Mixed-layer CIN: -317 J/kg
Mixed-layer LCL: 2398 m above ground
0-6 km bulk shear: 27 kt
0-1 km storm-relative helicity: 40 m²/s²
0-3 km storm-relative helicity: 93 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 160643
FFWFGZ
AZC017-160830-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE FLAGSTAFF AZ
1137 PM MST MON JUL 15 2002

THE NATIONAL WEATHER SERVICE HAS EXTENDED THE 

* FLASH FLOOD WARNING FOR...
  CARRIZO CREEK AND THE TOWN OF CARRIZO IN
  SOUTHWESTERN NAVAJO COUNTY IN NORTHEAST ARIZONA

* UNTIL 130 AM MST

* AT 1137 PM MST...WEATHER SERVICE DOPPLER RADAR INDICATED 
  RAIN OCCURRING OVER THE HEADWATERS OF CARRIZO CREEK.

1100 PM STAGE DATA FROM THE CARRIZO CREEK GAGE LOCATED 12 MILES 
UPSTREAM FROM CARRIZO SHOWED A HEIGHT OF 19.94 FEET AND IT WAS 
STILL RISING. THE HEIGHT HAS RISEN 5.5 FEET SINCE 815 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 3424 11078 3402 11063 3400 11036 3431 11062

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 15, 8:53 PM MDT	Severe Thunderstorm Warning	FGZ	Navajo	22 min
Jul 15, 9:38 PM MDT	Flash Flood Warning	FGZ	Navajo	52 min
Jul 15, 9:41 PM MDT	Flash Flood Warning	FGZ	Navajo	109 min
Jul 15, 10:00 PM MDT	Flash Flood Warning	FGZ	Navajo	60 min
Jul 15, 10:05 PM MDT	Flash Flood Warning	FGZ	Navajo	115 min
Jul 16, 12:37 AM MDT	Flash Flood Warning	FGZ	Navajo	53 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.