Alert archive / Arizona / Flash Flood Warnings in 1993
Flash Flood Warning 20, NWS Tucson, AZ
NWS Tucson, AZ issued this flash flood warning at Aug 24, 1993, 4:50 PM MST for Cochise County, Pima County, Santa Cruz County, Arizona. It was in force for 70 min.
The area
The counties it named.
The facts
- Issued
- Aug 24, 1993, 4:50 PM MST (23:50 UTC)
- Expired
- Aug 24, 1993, 6:00 PM MST
- In force
- 70 min
- Issued by
- NWS Tucson, AZ
- Area
- Whole counties
Counties Cochise County, AZ, Pima County, AZ, Santa Cruz County, AZ
The nearest sounding before it
Tuscon, AZ (KTUS), launched 12:00Z, 11.8 hours before the alert went out and 39 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
- 1219 J/kg
- Mixed-layer CIN
- -72 J/kg
- Mixed-layer LCL
- 1231 m above ground
- 0-6 km bulk shear
- 17 kt
- 0-1 km storm-relative helicity
- -15 m²/s²
- 0-3 km storm-relative helicity
- 66 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 242353 FFWTUS AZC019-023-003-250100- BULLETIN - EBS ACTIVATION REQUESTED SEVERE THUNDERSTORM AND FLASH FLOOD WARNING NATIONAL WEATHER SERVICE TUCSON ARIZONA 450 PM MST TUE AUG 24 1993 THE NATIONAL WEATHER SERVICE IN TUCSON ARIZONA HAS ISSUED A SEVERE THUNDERSTORM AND FLASH FLOOD WARNING EFFECTIVE UNTIL 600 PM MST FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN SOUTH CENTRAL ARIZONA ...EASTERN PIMA COUNTY...SANTA CRUZ COUNTY IN SOUTHEAST ARIZONA ...COCHISE COUNTY AT 4:50 PM MST...THE SEVERE THUNDERSTORM AND FLASH FLOOD WARNING FOR COCHISE...SANTA CRUZ...AND EASTERN PIMA COUNTIES WAS EXTENDED UNTIL 6:00 PM MST. AT 4:37 PM...LOCAL FLOODING...STRANDED CARS...DOWNED FENCES AND POWER OUTAGES WERE REPORTED IN SANTA CRUZ COUNTY IN THE VICINITY RIO RICO. THEY ALSO REPORTED WIND GUSTS IN EXCESS OF 50 MPH AND CONTINUOUS LIGHTNING. AT 4:35 PM...1/2 TO 3/4 INCH HAIL WAS REPORTED IN BENSEN ALONG WITH VERY HEAVY RAIN...LOTS OF LIGHTNING...AND WINDS OF 25 TO 30 MPH. AT 4:45 PM...A VERY STRONG THUNDERSTORM WAS MOVING INTO TUCSON FROM THE SOUTH AND ANOTHER WAS APPROACHING DOUGLAS FROM THE MEXICAN BORDER. NEW THUNDERSTORMS WERE ALSO MOVING INTO SANTA CRUZ COUNTY. AT 4:50 PM MST...NUMEROUS SEVERE OR POTENTIALLY SEVERE THUNDERSTORMS WERE STILL OCCURRING IN THE THREE MENTIONED COUNTIES. THEY HAVE BEEN PRODUCING LARGE HAIL...VERY STRONG WIND...LOCAL FLOODING AND FREQENT LIGHTNING. ANYONE IN THE VICINITY OF THESE STORMS SHOULD TAKE IMMEDIATE PROTECTIVE ACTION!! A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT. IT'S IMPORTANT TO KNOW WHERE YOU ARE RELATIVE TO STREAMS...RIVERS...OR CREEKS WHICH CAN BECOME KILLERS IN HEAVY RAINS. CAMPERS SHOULD AVOID CAMPING ALONG STREAMS OR CREEKS DURING THREATENING RAINS. THESE ARE DANGEROUS STORMS. IF YOU ARE IN THEIR 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. END...SHOGREN
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
Local storm report, Aug 24, 1:19 PM MST, 3 hours 31 minutes before
LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TUSCON AZ
STATE...ARIZONA N0... 10 MONTH AND YEAR... AUGUST 1993
...............................................................................
| NO OF |ESTIMATED|
| PERSONS | DAMAGE |
.........................................| | | | |................
PLACE |DATE| TIME |LNGTH |WIDTH |DEAD|INJRD|PPTY|CRPS| CHARTR OF STRM
...............................................................................
PIMA CO. |21 |1700-1930 MST -| - | 0 | 0 |UNK | UNK| SVR TSMS &
AZC019 FLASH FLOODING
(SVR & FFW 5:50-7:30 PM MST)
A SERIES OF SEVERE THUNDERSTORMS MOVED THROUGH EASTERN PIMA CO.
ON 8/21 SUPPORTED BY THE FOLLOWING:
5:05 PM - 7 MILES EAST OF TUCSON... .59 OF AN INCH IN 25 MINUTES
5:27 PM - NW TUCSON OLDFATHER AND FIRETHORN...HEAVY RAIN AND
OCCASIONAL HAIL...UP TO 1/2 INC
5:15-7:00 PM... 1.75 INCHES..LOCAL FLOODING..GREEN VALLEY SPTR.
5:36 PM...1.50 INCH OF RAIN IN SOUTHWEST GREEN VALLEY IN
45 MINUTES. SOME HAIL 5/16 INCH IN DIAMETER.
5:31 PM...FROM ALERT GAGE #6050, 5 SOUTH OF GREEN VALLEY...
.87 INCH OF RAIN IN 32 MINUTES.
INFO FROM TUCSON ELECTRIC RECEIVED AFTER THE STORM:
5:31-6:41 POWER OUTAGE IN NW TUCSON...RIVER RD AND ORACLE AREA
5:49-6:00 DURING THIS PERIOD...13 POWER POLES WERE BLOWN OVER
8 SNAPPED OFF...SOME ROOF DAMAGE IN LOCAL AREA.
(NW TUCSON NORTH SILVERBELL RD AND CAMINO DEL CERRO)
6:12 PM...FROM WSFO PHX...FROM 25 SOUTH OF GREEN VALLEY...
1.25 INCHES OF RAIN IN LAST HOUR.
6:20 PM...ALERT #6050, 5 SOUTH OF GREEN VALLEY...1.20 INCHES
OF RAIN IN 1 HR 6 MIN ENDING AT 6:18 PM.
6:40 PM...ALERT #1080, RANCHO SOLANO...IN ORO VALLEY 31 MILES
NORTH OF AIRPORT... .59 INCH IN 22 MINUTES.
7:00 PM...PIMA CO. SHERIFF REPORTED SOME TREES DOWN IN THE
AREA WHERE POWER LINES WERE TAKEN OUT AT ABOUT 6 PM.
ALSO PANTANO WASH `(NE TUCSON) WAS RUNNING STRONG.
7:20 PM...LOTS OF LIGHTNING AND HEAVY RAIN OFF AN ON SINCE 6 PM.
END...SHOGRENLocal storm report, Aug 24, 1:19 PM MST, 3 hours 31 minutes before
LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TUSCON AZ
STATE...ARIZONA N0... 10 MONTH AND YEAR... AUGUST 1993
...............................................................................
| NO OF |ESTIMATED|
| PERSONS | DAMAGE |
.........................................| | | | |................
PLACE |DATE| TIME |LNGTH |WIDTH |DEAD|INJRD|PPTY|CRPS| CHARTR OF STRM
...............................................................................
PIMA CO. |21 |1700-1930 MST -| - | 0 | 0 |UNK | UNK| SVR TSMS &
AZC019 FLASH FLOODING
(SVR & FFW 5:50-7:30 PM MST)
A SERIES OF SEVERE THUNDERSTORMS MOVED THROUGH EASTERN PIMA CO.
ON 8/21 SUPPORTED BY THE FOLLOWING:
5:05 PM - 7 MILES EAST OF TUCSON... .59 OF AN INCH IN 25 MINUTES
5:27 PM - NW TUCSON OLDFATHER AND FIRETHORN...HEAVY RAIN AND
OCCASIONAL HAIL...UP TO 1/2 INC
5:15-7:00 PM... 1.75 INCHES..LOCAL FLOODING..GREEN VALLEY SPTR.
5:36 PM...1.50 INCH OF RAIN IN SOUTHWEST GREEN VALLEY IN
45 MINUTES. SOME HAIL 5/16 INCH IN DIAMETER.
5:31 PM...FROM ALERT GAGE #6050, 5 SOUTH OF GREEN VALLEY...
.87 INCH OF RAIN IN 32 MINUTES.
INFO FROM TUCSON ELECTRIC RECEIVED AFTER THE STORM:
5:31-6:41 POWER OUTAGE IN NW TUCSON...RIVER RD AND ORACLE AREA
5:49-6:00 DURING THIS PERIOD...13 POWER POLES WERE BLOWN OVER
8 SNAPPED OFF...SOME ROOF DAMAGE IN LOCAL AREA.
(NW TUCSON NORTH SILVERBELL RD AND CAMINO DEL CERRO)
6:12 PM...FROM WSFO PHX...FROM 25 SOUTH OF GREEN VALLEY...
1.25 INCHES OF RAIN IN LAST HOUR.
6:20 PM...ALERT #6050, 5 SOUTH OF GREEN VALLEY...1.20 INCHES
OF RAIN IN 1 HR 6 MIN ENDING AT 6:18 PM.
6:40 PM...ALERT #1080, RANCHO SOLANO...IN ORO VALLEY 31 MILES
NORTH OF AIRPORT... .59 INCH IN 22 MINUTES.
7:00 PM...PIMA CO. SHERIFF REPORTED SOME TREES DOWN IN THE
AREA WHERE POWER LINES WERE TAKEN OUT AT ABOUT 6 PM.
ALSO PANTANO WASH (NE TUCSON) WAS RUNNING STRONG.
7:20 PM...LOTS OF LIGHTNING AND HEAVY RAIN OFF AN ON SINCE 6 PM.
END...SHOGRENSpecial weather statement, Aug 24, 1:49 PM MST, 3 hours 1 minute before
AZC003-019-023-241445- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE TUCSON ARIZONA 150 AM MST TUE AUG 24 1993 AT 145 PM MST...NATIONAL WEATHER SERVICE RADAR INDICATED RAPIDLY DEVELOPING THUNDERSTORMS IN PORTIONS OF SOUTHEAST ARIZONA. MOST OF THE NEW STORMS WERE IN COCHISE...SANTA CRUZ...AND EASTERN PIMA COUNTIES. A FEW WERE ALREADY QUITE STRONG. SOME OF THE STRONGEST WERE ABOUT 15 MILES NORTHEAST OF DOUGLAS... NEAR NOGALES...AND ABOUT 35 MILES SOUTHWEST OF TUCSON. MOVEMENT HAD YET TO BE DETERMINED AT 145 PM...BUT THE STORMS SHOULD GENERALLY MOVE TOWARD THE NORTHWEST AT AROUND 10 MPH. THUNDERSTORMS ARE LIKELY THROUGH THE AFTERNOON AND EVENING HOURS. SOME OF THE STORMS WILL BECOME QUITE STRONG...PRODUCING LOCALLY HEAVY RAIN...STRONG GUSTY WIND...POSSIBLY SOME SMALL HAIL...AND LOTS OF DEADLY LIGHTNING. PERSONS IN THE VICINITY OF ANY OF THESE AFTERNOON AND EVENING THUNDERSTORMS SHOULD BE ON THE ALERT FOR POTENTIALLY DANGEROUS WEATHER CONDITIONS OR UNUSUAL SURPRISES. FOR EXAMPLE...PRESENTLY DRY STREAMS...WASHES AND ROADWAYS CAN FILL QUICKLY WITH WATER FROM A HEAVY THUNDERSTORM AND CAUSE SERIOS PROBLEMS SOME DISTANCE AWAY FROM THE ACTUAL STORM. BEING PREPARED ANzD USING CAUTION CAN CERTAINLY SAVE LIVES. STAY TUNED TO NOAA WEATHER RADIO OR YOUR FAVORITE NEWS SOURCE FOR ANY ADDITIONAL STATEMENTS OF BULLETINS. END...SHOGREN
Special weather statement, Aug 24, 1:50 PM MST, 3 hours before
AZC003-019-023-241445- SPECIAL WEATHER STATEMENT...CORRECTION NATIONAL WEATHER SERVICE TUCSON ARIZONA 150 PM MST TUE AUG 24 1993 AT 145 PM MST...NATIONAL WEATHER SERVICE RADAR INDICATED RAPIDLY DEVELOPING THUNDERSTORMS IN PORTIONS OF SOUTHEAST ARIZONA. MOST OF THE NEW STORMS WERE IN COCHISE...SANTA CRUZ...AND EASTERN PIMA COUNTIES. A FEW WERE ALREADY QUITE STRONG. SOME OF THE STRONGEST WERE ABOUT 15 MILES NORTHEAST OF DOUGLAS... NEAR NOGALES...AND ABOUT 35 MILES SOUTHWEST OF TUCSON. MOVEMENT HAD YET TO BE DETERMINED AT 145 PM...BUT THE STORMS SHOULD GENERALLY MOVE TOWARD THE NORTHWEST AT AROUND 10 MPH. THUNDERSTORMS ARE LIKELY THROUGH THE AFTERNOON AND EVENING HOURS. SOME OF THE STORMS WILL BECOME QUITE STRONG...PRODUCING LOCALLY HEAVY RAIN...STRONG GUSTY WIND...POSSIBLY SOME SMALL HAIL...AND LOTS OF DEADLY LIGHTNING. PERSONS IN THE VICINITY OF ANY OF THESE AFTERNOON AND EVENING THUNDERSTORMS SHOULD BE ON THE ALERT FOR POTENTIALLY DANGEROUS WEATHER CONDITIONS OR UNUSUAL SURPRISES. FOR EXAMPLE...PRESENTLY DRY STREAMS...WASHES AND ROADWAYS CAN FILL QUICKLY WITH WATER FROM A HEAVY THUNDERSTORM AND CAUSE SERIOS PROBLEMS SOME DISTANCE AWAY FROM THE ACTUAL STORM. BEING PREPARED AND USING CAUTION CAN CERTAINLY SAVE LIVES. STAY TUNED TO NOAA WEATHER RADIO OR YOUR FAVORITE NEWS SOURCE FOR ANY ADDITIONAL STATEMENTS OF BULLETINS. END...SHOGREN
Special weather statement, Aug 24, 1:52 PM MST, 2 hours 58 minutes before
AZC003-019-023-241445- SPECIAL WEATHER STATEMENT...CORRECTION NATIONAL WEATHER SERVICE TUCSON ARIZONA 150 PM MST TUE AUG 24 1993 AT 145 PM MST...NATIONAL WEATHER SERVICE RADAR INDICATED RAPIDLY DEVELOPING THUNDERSTORMS IN PORTIONS OF SOUTHEAST ARIZONA. MOST OF THE NEW STORMS WERE IN COCHISE...SANTA CRUZ...AND EASTERN PIMA COUNTIES. A FEW WERE ALREADY QUITE STRONG. SOME OF THE STRONGEST WERE ABOUT 15 MILES NORTHEAST OF DOUGLAS... NEAR NOGALES...AND ABOUT 35 MILES SOUTHWEST OF TUCSON. MOVEMENT HAD YET TO BE DETERMINED AT 145 PM...BUT THE STORMS SHOULD GENERALLY MOVE TOWARD THE NORTHWEST AT AROUND 10 MPH. THUNDERSTORMS ARE LIKELY THROUGH THE AFTERNOON AND EVENING HOURS. SOME OF THE STORMS WILL BECOME QUITE STRONG...PRODUCING LOCALLY HEAVY RAIN...STRONG GUSTY WIND...POSSIBLY SOME SMALL HAIL...AND LOTS OF DEADLY LIGHTNING. PERSONS IN THE VICINITY OF ANY OF THESE AFTERNOON AND EVENING THUNDERSTORMS SHOULD BE ON THE ALERT FOR POTENTIALLY DANGEROUS WEATHER CONDITIONS OR UNUSUAL SURPRISES. FOR EXAMPLE...PRESENTLY DRY STREAMS...WASHES AND ROADWAYS CAN FILL QUICKLY WITH WATER FROM A HEAVY THUNDERSTORM AND CAUSE SERIOS PROBLEMS SOME DISTANCE AWAY FROM THE ACTUAL STORM. BEING PR~EPARED AND USING CAUTION CAN CERTAINLY SAVE LIVES. STAY TUNED TO NOAA WEATHER RADIO OR YOUR FAVORITE NEWS SOURCE FOR ANY ADDITIONAL STATEMENTS OF BULLETINS. END...SHOGREN
The office that day
Everything else NWS Tucson, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 24, 2:30 PM MST | Severe Thunderstorm Warning | TWC | Cochise, Pima, Santa Cruz | 60 min |
| Aug 24, 3:15 PM MST | Flash Flood Warning | TWC | Cochise, Pima, Santa Cruz | 2 hr |
| Aug 24, 3:15 PM MST | Severe Thunderstorm Warning | TWC | Cochise, Pima, Santa Cruz | 2 hr |
| Aug 24, 4:50 PM MST | Severe Thunderstorm Warning | TWC | Cochise, Pima, Santa Cruz | 70 min |
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.