Alert archive / Arizona / Flash Flood Warnings in 1999

Flash Flood Warning 21, NWS Tucson, AZ

July 25, 1999Cochise County, Arizona

NWS Tucson, AZ issued this flash flood warning at Jul 25, 1999, 1:18 PM MST for Cochise County, Arizona. It was in force for 67 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Jul 25, 1999, 1:18 PM MST (20:18 UTC)
Expired
Jul 25, 1999, 2:25 PM MST
In force
67 min
Issued by
NWS Tucson, AZ
Area
Whole counties

County Cochise County, AZ

The radar

The Tucson radar (KEMX), 83 km from the middle of the area, began a volume at 20:17 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, 8.3 hours before the alert went out and 113 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 1999-07-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 454 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 1999-07-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 2 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
454 J/kg
Mixed-layer CIN
-88 J/kg
Mixed-layer LCL
1482 m above ground
0-6 km bulk shear
5 kt
0-1 km storm-relative helicity
2 m²/s²
0-3 km storm-relative helicity
32 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 
TTAA00 KTUS 252019
FFWTUS
AZC003-252120-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TUCSON AZ
118 PM MST SUN JUL 25 1999

THE NATIONAL WEATHER SERVICE IN TUCSON HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  EAST CENTRAL COCHISE COUNTY IN SOUTHEASTERN ARIZONA
  INCLUDING THE PORTAL RANGER STATION AND CAVE CREEK

* UNTIL 225 PM MST

* AT 115 PM...MODERATE TO HEAVY RAIN WAS STILL FALLING OVER THE
  EAST SIDE OF THE CHIRICAHUA MOUNTAINS. UP TO 3 INCHES OF RAIN
  FELL NEAR THE PORTAL RANGER STATION BETWEEN 1030 AM AND 1230
  PM.

* FLASH FLOODING CONTINUES IN THE CAMPGROUNDS NEAR THE PORTAL
  RANGER STATION. ALL CAMPGROUNDS IN THE AREA HAVE BEEN CLOSED.
  CAVE CREEK CONTINUES TlO RISE RAPIDLY.

THIS WARNING EXTENDS THE PREVIOUS FLASH FLOOD WARNING FOR EAST
CENTRAL COCHISE COUNTY, STAY AWAY FROM CAVE CREEK AND ANY OTHER
RISING CREEKS AND STREAMS.

PYTLAK

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 25, 12:24 PM MSTFlash Flood WarningTWCCochise61 min
Jul 25, 1:27 PM MSTSevere Thunderstorm WarningTWCPima33 min

Nearby

Flash Flood Warnings in Arizona, 1999Every flash flood warning in 1999

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.