Alert archive / Arizona / Flash Flood Warnings in 2001

Flash Flood Warning 18, NWS Tucson, AZ

July 29, 2001Greenlee County, Arizona

NWS Tucson, AZ issued this flash flood warning at Jul 29, 2001, 3:18 PM MST for Greenlee County, Arizona. It was in force for 57 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.

The facts

Issued
Jul 29, 2001, 3:18 PM MST (22:18 UTC)
Expired
Jul 29, 2001, 4:15 PM MST
In force
57 min
Issued by
NWS Tucson, AZ
Area
Whole counties; the outline is the Mesonet’s reconstruction

County Greenlee County, AZ

The radar

The Flagstaff radar (KFSX), 213 km from the middle of the area, began a volume at 22:21 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

Tuscon, AZ (KTUS), launched 12:00Z, 10.3 hours before the alert went out and 207 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-pSkew-T log-p diagram, Tuscon, AZ at 12:00Z on 2001-07-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 147 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Tuscon, AZ at 12:00Z on 2001-07-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 15 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
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
147 J/kg
Mixed-layer CIN
-179 J/kg
Mixed-layer LCL
1495 m above ground
0-6 km bulk shear
13 kt
0-1 km storm-relative helicity
15 m²/s²
0-3 km storm-relative helicity
65 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 KTWC 292221
FFWTWC
AZC011-300015-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TUCSON AZ
318 PM MST SUN JUL 29 2001

THE NATIONAL WEATHER SERVICE IN TUCSON HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  NORTHERN GREENLEE COUNTY IN ARIZONA

* UNTIL 515 PM MST

* AT 318 PM MST...WEATHER SERVICE DOPPLER RADAR INDICATED VERY HEAVY
RAIN OVER NORTHERN GREENLEE COUNTY...OR JUST SOUTH OF HANNAGAN
MEADOW...WHICH IS 46 MILES NORTHEAST OF SAFFORD.  THE HEAVIEST
RAINFALL WAS OCCURRING NEAR THE ROBINSON CANYON AREA.

MOVEMENT OF THE HEAVY RAIN PRODUCING STORMS IS TO THE SOUTHWEST AT 5
TO 10 MPH.

A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR nOCCURRING.
DO NOT ATTEMPT TO CROSS SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN
DEPTH BY FOOT OR BY AUTOMOBILE.

LAT...LON 3331 10948 3325 10930 3323 10907 3377 10907
          3378 10929 3364 10949

DRB

Nearby

Flash Flood Warnings in Arizona, 2001Every flash flood warning in 2001

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.