Alert archive / Arizona / Flash Flood Warnings in 2001

Flash Flood Warning 13, NWS Tucson, AZ

July 25, 2001Santa Cruz County, Arizona

NWS Tucson, AZ issued this flash flood warning at Jul 25, 2001, 3:06 PM MST for Santa Cruz County, Arizona. It was in force for 54 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 25, 2001, 3:06 PM MST (22:06 UTC)
Expired
Jul 25, 2001, 4:00 PM MST
In force
54 min
Issued by
NWS Tucson, AZ
Area
Whole counties; the outline is the Mesonet’s reconstruction

County Santa Cruz County, AZ

The radar

The Tucson radar (KEMX), 47 km from the middle of the area, began a volume at 22:09 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, 10.1 hours before the alert went out and 81 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 2001-07-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 210 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 2001-07-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 22 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
210 J/kg
Mixed-layer CIN
-173 J/kg
Mixed-layer LCL
1862 m above ground
0-6 km bulk shear
10 kt
0-1 km storm-relative helicity
22 m²/s²
0-3 km storm-relative helicity
52 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 252207
FFWTWC
AZC023-260000-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TUCSON AZ
306 PM MST WED JUL 25 2001

THE NATIONAL WEATHER SERVICE IN TUCSON HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  EASTERN SANTA CRUZ COUNTY IN ARIZONA

* UNTIL 500 PM MST

* AT 300 PM MST...WEATHER SERVICE DOPPLER RADAR INDICATED VERY HEAVY
  RAIN OVER PATAGONIA...OR ABOUT 19 MILES NORTHEAST OF NOGALES...
  MOVING WEST AT 5 MPH.

* THE THUNDERSTORMS WITH EXCESSIVE RAINFALL WILL REMAIN OVER EASTERN
  SANTA CRUZ COUNTY THROUGH AT LEAST 4 PM. UP TO 4 INCHES OF RAIN IS
  LIKELY IN THE MOUNTAINS NEAR PATAGONIA.

IT IS EXTREMELY DANGEROUS TO DRIVE INTO FLOODED AR&EAS.

LAT...LON 3134 11047 3167 11047 3167 11089 3135 11089

PYTLAK

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 25, 3:56 PM MSTFlash Flood WarningTWCCochise64 min

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.