Alert archive / Arizona / Flash Flood Warnings in 1998
Flash Flood Warning 40, NWS Tucson, AZ
NWS Tucson, AZ issued this flash flood warning at Aug 9, 1998, 7:31 PM MST for Pima County, Arizona. It was in force for 94 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
- Aug 9, 1998, 7:31 PM MST (02:31 UTC)
- Expired
- Aug 9, 1998, 9:05 PM MST
- In force
- 94 min
- Issued by
- NWS Tucson, AZ
- Area
- Whole counties
County Pima County, AZ
The nearest sounding before it
Tuscon, AZ (KTUS), launched 00:00Z, 2.5 hours before the alert went out and 84 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.
- Mixed-layer CAPE
- 1180 J/kg
- Mixed-layer CIN
- -53 J/kg
- Mixed-layer LCL
- 2132 m above ground
- 0-6 km bulk shear
- 16 kt
- 0-1 km storm-relative helicity
- -21 m²/s²
- 0-3 km storm-relative helicity
- 61 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KTUS 100234 FFWTUS AZC019-100405- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE TUCSON AZ 731 PM MST SUN AUG 9 1998 THE NATIONAL WEATHER SERVICE IN TUCSON HAS ISSUED A * FLASH FLOOD WARNING FOR... NORTHEASTERN PIMA COUNTY IN SOUTHERN ARIZONA * UNTIL 905 PM MST * AT 730 PM MST... RADAR RAINFALL ESTIMATES AND SPOTTER REPORTS INDICATED A THUNDERSTORM WITH VERY HEAVY RAIN OVER CENTRAL TUCSON...MOVING WEST AT 10 MPH. EXPE(CT RAINFALL TOTALS OF 1 TO 2 INCHES WITH THIS STORM. ARB
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 Aug 9, 2:30 PM MST, 5 hours 1 minute earlier.
Area forecast discussion, Aug 9, 2:30 PM MST, 5 hours 1 minute before
SOUTHEAST ARIZONA FORECAST DISCUSSION NATIONAL WEATHER SERVICE TUCSON AZ 230 PM MST SUN AUG 9 1998 SYNOPSIS...THUNDERSTORM ACTIVITY WILL INCREASE THE NEXT FEW DAYS AS MOISYURE FROM FORMER TROPICAL STORM FRANK MOVES INTO ARIZONA. DISCUSSION...STORMS DEVELOPING IN MTNS THAT CLEARED FIRST. LUKS LIKE WE HAVE TWO CHANCES OF GETTING PRECIP. FIRST WILL BE WITH STORMS DEVELOPING LOCALLY THIS AFTN. SECOND WILL BE IF COMPLEX DEVELOPS DOWN IN MEX TONIGHT AND MOVES NORTHWARD. POTENTIAL IS ABOUT THE SAME WITH EITHER SCENARIO. ALMOST TROPICAL AIRMASS SO SEVERE THREAT MINIMAL BUT HEAVY PRECIP THREAT STILL THERE. HAVE DECIDED TO HOLD OFF ON ANY WATCHES IN CWA...JUST NEED TO HAVE MORE CONFIDENCE IN HOW T HIS IS GOING TO PLAY OUT. TREND SHOULD BE DECREAING THROUGH TUE BUT STILL IN A WET PERIOD FOR THE WEEK. TUS 5444. HOLBROOK .TWC...NONE.
The office that day
Everything else NWS Tucson, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 9, 5:40 PM MST | Severe Thunderstorm Warning | TWC | Cochise, Pima | 45 min |
| Aug 9, 6:26 PM MST | Severe Thunderstorm Warning | TWC | Pima | 49 min |
| Aug 9, 7:14 PM MST | Severe Thunderstorm Warning | TWC | Pima | 46 min |
| Aug 10, 3:21 PM MST | Severe Thunderstorm Warning | TWC | Cochise | 49 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.