Alert archive / Arizona / Flash Flood Warnings in 1997
Flash Flood Warning 22, NWS Tucson, AZ
NWS Tucson, AZ issued this flash flood warning at Aug 8, 1997, 6:27 PM MST for Pinal County, Arizona. It was in force for 63 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 8, 1997, 6:27 PM MST (01:27 UTC)
- Expired
- Aug 8, 1997, 7:30 PM MST
- In force
- 63 min
- Issued by
- NWS Tucson, AZ
- Area
- Whole counties
County Pinal County, AZ
The radar
The Phoenix radar (KIWA), 52 km from the middle of the area, began a volume at 01:27 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 00:00Z, 1.5 hours before the alert went out and 92 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
- 657 J/kg
- Mixed-layer CIN
- -196 J/kg
- Mixed-layer LCL
- 1881 m above ground
- 0-6 km bulk shear
- 30 kt
- 0-1 km storm-relative helicity
- 100 m²/s²
- 0-3 km storm-relative helicity
- 196 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 6.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KTUS 090128 FFWTUS AZC021-090230- BULLETIN FLASH FLOOD WARNING NATIONAL WEATHER SERVICE TUCSON AZ 627 PM MST FRI AUG 8 1997 THE NATIONAL WEATHER SERVICE IN TUCSON AZ HAS ISSUED A FLASH FLOOD WARNING EFFECTIVE UNTIL 730 PM MST FOR PEOPLE IN THE FOLLOWING LOCATION... IN SOUTH CENTRAL ARIZONA ...SOUTHEASTERN PINAL COUNTY AT 625 PM MST...TUCSON DOPPLER RADAR DETECTED AN AREA OF STRONG THUNDERSTORMS ACROSS SOUTHEAST PINAL COUNTY. THESE STORMS CONTINUE TO PR$ODUCE LOCAL HEAVY RAINFALL...WHICH WILL PROLONG FLASH FLOODING NEAR THE SAN PEDRO RIVER THROUGH 730 PM MST. DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD AND OBEY ROAD CLOSURE SIGNS! OKULSKI
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 8, 2:37 PM MST, 3 hours 50 minutes earlier.
Area forecast discussion, Aug 8, 2:37 PM MST, 3 hours 50 minutes before
SOUTHEAST ARIZONA FORECAST DISCUSSION NATIONAL WEATHER SERVICE TUCSON AZ 230 PM MST FRI AUG 8 1997 SCT TSTMS DVLPG THROUGHOUT SE AZ...SEVERAL SEVERE. MAINTAINED STG SFC DEWPTS WELL ABV 60 THRU AFTN WITH VERY LARGE CAPE VALUES. SHOULD SEE DVLPMT CONT THRU AFTN AND EVE. WATCH FOR WELL SUPPORTED OUTFLOWS...ESPECIALLY OFF THE RIM. HEAVY RAINFALL. ENOUGH HVY RAINFALL WITH DEBRIS CLD COULD DEPRESS ACTIVITY SOME LOCATIONS TMW. CURRENT FCST TO REFLECT TSTpMS SUSTAINED INTO THE EVE HRS WITH TEMPS AND TSTM COVERAGE DOWN A LTL FOR TMW. LOW LVL MSTR THRU EXTD. PATTERN MAY SHIFT RDG AXIS TO LESS FAVORABLE POSITION...NOTHING TO POINT AT RIGHT NOW. ANOTHER BUSY TIME. TUS 5233. MEYER TUS...NONE
The office that day
Everything else NWS Tucson, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 8, 5:18 PM MST | Flash Flood Warning | TWC | Pima | 57 min |
| Aug 8, 5:18 PM MST | Severe Thunderstorm Warning | TWC | Pima | 57 min |
| Aug 8, 5:22 PM MST | Flash Flood Warning | TWC | Pinal | 63 min |
| Aug 8, 5:22 PM MST | Severe Thunderstorm Warning | TWC | Pinal | 63 min |
| Aug 8, 5:38 PM MST | Flash Flood Warning | TWC | Pinal | 62 min |
| Aug 8, 5:38 PM MST | Severe Thunderstorm Warning | TWC | Pinal | 62 min |
| Aug 8, 6:14 PM MST | Flash Flood Warning | TWC | Pima | 61 min |
| Aug 8, 6:23 PM MST | Severe Thunderstorm Warning | TWC | Pima | 47 min |
| Aug 9, 4:42 PM MST | Severe Thunderstorm Warning | TWC | Pima | 48 min |
Nearby
Flash Flood Warnings in Arizona, 1997Every flash flood warning in 1997
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.