Alert archive / Arizona / Flash Flood Warnings in 1993
Flash Flood Warning 10, NWS Tucson, AZ
NWS Tucson, AZ issued this flash flood warning at Aug 5, 1993, 5:31 PM MST for Pima County, Arizona. It was in force for 59 min.
The area
The counties it named.
The facts
- Issued
- Aug 5, 1993, 5:31 PM MST (00:31 UTC)
- Expired
- Aug 5, 1993, 6:30 PM MST
- In force
- 59 min
- Issued by
- NWS Tucson, AZ
- Area
- Whole counties
County Pima County, AZ
The nearest sounding before it
Tuscon, AZ (KTUS), launched 00:00Z, 0.5 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
- 438 J/kg
- Mixed-layer CIN
- -64 J/kg
- Mixed-layer LCL
- 2289 m above ground
- 0-6 km bulk shear
- 13 kt
- 0-1 km storm-relative helicity
- 58 m²/s²
- 0-3 km storm-relative helicity
- 75 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 060033 FFWTUS AZC019-060130- BULLETIN - EBS ACTIVATION REQUESTED SEVERE THUNDERSTORM AND FLASH FLOOD WARNING NATIONAL WEATHER SERVICE TUCSON ARIZONA 531 PM MST THU AUG 5 1993 THE NATIONAL WEATHER SERVICE IN TUCSON ARIZONA HAS ISSUED A SEVERE THUNDERSTORM AND FLASH FLOOD WARNING EFFECTIVE UNTIL 630 PM MST FOR PEOPLE IN THE FOLLOWING LOCATION... IN SOUTH CENTRAL ARIZONA ...CENTRAL PIMA COUNTY ...SEVERE THUNDERSTORMS LOCATED IN CENTRAL PIMA COUNTY... AT 530 PM TWO LARGE THUNDERSTORMS WITH TOPS ABOVE 50 THOUSAND FEET WERE OCCURRING IN CENTRAL PIMA COUNTY. THE STRONGEST STORM WAS LOCATED 25 MILES SOUTHEAST OF AJO WITH A SECOND STORM OF ALMOST EQUAL STRENGTH LOCATED 15 MILES EAST OF AJO. RADAR INDICATED THESE STORMS WERE MOVING SLOWLY FROM SOUTHEAST TO NORTHWEST. THESE ARE DANGEROUS STORMS. IF YOU ARE IN ITS PATH YOU SHOULD PREPARE FOR DAMAGING WIND IN EXCESS OF 55 MPH...LARGE HAIL... DEADLY LIGHTNING AND VERY HEAVY RAIN. IF OUTSIDE...MOVE TO A SHELTER OR INSIDE A STRONG BUILDING...BUT STAY AWAY FROM WINDOWS. MAZUR
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.
In the hours before
Special weather statement, Aug 5, 2:28 PM MST, 3 hours 3 minutes before
AZC003-019-023-060030- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE TUCSON ARIZONA 228 PM MST THU AUG 5 1993 ...THUNDERSTORM ACTIVITY INCREASING... AT 210 PM MST WEATHER RADAR...LIGHTNING DETECTORS...AND VISUAL OBSERVATIONS INDICATED AN INCREASE IN THE AMOUNT OF THUNDERSTORM ACTIVITY IN THE TUCSON AREA...SOUTHERN COCHISE COUNTY...AND SANTA CRUZ COUNTY. AT 200 PM A SPOTTER REPORTED FREQUENT LIGHTNING AND 20 TO 30 MPH WINDS WEST OF TUBAC IN SANTA CRUZ COUNTY. AT 210 PM NATIONAL WEATHER SERVICE RADAR IN TUCSON AND PHOENIX INDICATED THUNDERSTORMS WITH POTENTIALLY HEAVY RAINS 10 MILES WEST OF TUCSON. ALSO AT THIS TIME THUNDER WAS HEARD AT THE AIRPORT AND SHOWER ACTIVITY WAS NOTED NEAR MOUNT LEMMON. MOVEMENT OF MOST STORMS WAS SLOWLY TO THE NORTH AROUND 5 MPH. THUNDERSTORMS WILL CONTINUE TO DEVELOP THROUGHOUT THE AFTERNOON AND EARLY EVENING HOURS...WITH MOST THUNDERSTORM ACTIVITY DIMINISHED BY MIDNIGHT. EVERYONE SHOULD REMAIN AWARE OF ANY THUNDERSTORM ACTIVITY IN THEIR AREA...AND TAKE ANY NECESSARY PRECAUTIONS. THESE STORMS MAY BE ACCOMPANIED BY LOCALLY HEAVY RAIN...FREQUENT LIGHTNING...AND STRONG GUSTY WINDS. FURTHER STATEMENTS OR WARNINGS WILL BE ISSUED AS NECESSARY. MEYER
Special weather statement, Aug 5, 2:30 PM MST, 3 hours 1 minute before
AZC003-019-023-060030- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE TUCSON ARIZONA 228 PM MST THU AUG 5 1993 ...THUNDERSTORM ACTIVITY INCREASING... AT 210 PM MST WEATHER RADAR...LIGHTNING DETECTORS...AND VISUAL OBSERVATIONS INDICATED AN INCREASE IN THE AMOUNT OF THUNDERSTORM ACTIVITY IN THE TUCSON AREA...SOUTHERN COCHISE COUNTY...AND SANTA CRUZ COUNTY. AT 200 PM A SPOTTER REPORTED FREQUENT LIGHTNING AND 20 TO 30 MPH WINDS WEST OF TUBAC IN SANTA CRUZ COUNTY. AT 210 PM NATIONAL WEATHER SERVICE RADAR IN TUCSON AND PHOENIX INDICATED THUNDERSTORMS WITH POTENTIALLY HEAVY RAINS 10 MILES WEST OF TUCSON. ALSO AT THIS TIME THUNDER WAS HEARD AT THE AIRPORT AND SHOWER ACTIVITY WAS NOTED NEAR MOUNT LEMMON. MOVEMENT OF MOST STORMS WAS SLOWLY TO THE NORTH AROUND 5 MPH. THUNDERSTORMS WILL CONTINUE TO DEVELOP THROUGHOUT THE AFTERNOON AND EARLY EVENING HOURS...WITH MOST THUNDERSTORM ACTIVITY DIMINISHED BY MIDNIGHT. EVERYONE SHOULD REMAIN AWARE OF ANY THUNDERSTORM ACTIVITY IN THEIR AREA...AND TAKE ANY NECESSARY PRECAUTIONS. THESE STORMS MAY BE ACCOMPANIED BY LOCALLY HEAVY RAIN...FREQUENT LIGHTNING...AND STRONG GUSTY WINDS. FURTHER STATEMENTS OR WARNINGS WILL BE ISSUED AS NECESSARY. MEYER
The office that day
Everything else NWS Tucson, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 5, 5:31 PM MST | Severe Thunderstorm Warning | TWC | Pima | 59 min |
| Aug 6, 1:45 PM MST | Flash Flood Warning | TWC | Pima, Santa Cruz | 2 hr |
| Aug 6, 1:45 PM MST | Severe Thunderstorm Warning | TWC | Pima, Santa Cruz | 2 hr |
Nearby
Flash Flood Warnings in Arizona, 1993Every flash flood warning in 1993
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.