Alert archive / Arizona / Flash Flood Warnings in 1998

Flash Flood Warning 11, NWS Tucson, AZ

July 6, 1998Cochise County, Arizona

NWS Tucson, AZ issued this flash flood warning at Jul 6, 1998, 11:53 AM MST for Cochise County, Arizona. It was in force for 82 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 6, 1998, 11:53 AM MST (18:53 UTC)
Expired
Jul 6, 1998, 1:15 PM MST
In force
82 min
Issued by
NWS Tucson, AZ
Area
Whole counties

County Cochise County, AZ

The nearest sounding before it

Tuscon, AZ (KTUS), launched 12:00Z, 6.9 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 1998-07-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 388 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 1998-07-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 26 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
388 J/kg
Mixed-layer CIN
-41 J/kg
Mixed-layer LCL
1171 m above ground
0-6 km bulk shear
11 kt
0-1 km storm-relative helicity
26 m²/s²
0-3 km storm-relative helicity
26 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 061855
FFWTUS
AZC003-062015-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TUCSON AZ
1153 AM MST MON JUL 6 1998

THE NATIONAL WEATHER SERVICE IN TUCSON HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SOUTHERN COCHISE COUNTY IN SOUTHEASTERN ARIZONA

* UNTIL 115 PM MST

* AT 1155 AM... SPOTTERS INDICATED A THUNDERSTORM WITH VERY HEAVY
  RAIN NEAR BISBEE... MOVING SLOWLY EAST.



  VPH

What forecasters said that day

The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Tucson, AZ wrote its last area forecast discussion before this flash flood warning went out at Jul 6, 9:30 AM MST, 2 hours 23 minutes earlier.

Area forecast discussion, Jul 6, 9:30 AM MST, 2 hours 23 minutes before
SOUTHEAST ARIZONA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TUCSON AZ
930 AM MST MON JUL 6 1998

SYNOPSIS...MONSOONAL FLOW WILL CONTINUE ACROSS SOUTHEAST ARIZONA
OVER THE NEXT FEW DAYS. HIGH PRESSURE WILL BUILD IN BY MIDWEEK
RESULTING IN WARMER AFTERNOON TEMPERATURES.

DISCUSSION...MORE NOCTURNAL CONVECTIVE ACTIVITY GAIN AND HEAVY RAIN
PRODUCER. THINK WE MAY HAVE ONE MORE NIGHT OF THIS STUFF...AND AREAS
WHERE NO RAIN HAS FALLEN YET SHOULD GET SOME IN THE AFTN. WOULD NOT
BE TYPICAL FOR MONSOON TO CONTINUE THIS WAY SO FCST LATER WILL
REFLECT MORE TYPICAL MONSOON.

TUS 433. HOLBROOK

.TWC...NONE.

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 6, 7:08 AM MSTFlash Flood WarningTWCPima3 hr
Jul 6, 11:18 AM MSTFlash Flood WarningTWCCochise82 min

Nearby

Flash Flood Warnings in Arizona, 1998Every flash flood warning in 1998

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.