Alert archive / Arizona / Flash Flood Warnings in 2001
Flash Flood Warning 5, NWS Tucson, AZ
NWS Tucson, AZ issued this flash flood warning at Jul 5, 2001, 1:55 PM MST for Cochise County, Arizona. It was in force for 35 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.
The facts
- Issued
- Jul 5, 2001, 1:55 PM MST (20:55 UTC)
- Expired
- Jul 5, 2001, 2:30 PM MST
- In force
- 35 min
- Issued by
- NWS Tucson, AZ
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
County Cochise County, AZ
The nearest sounding before it
Tuscon, AZ (KTUS), launched 12:00Z, 8.9 hours before the alert went out and 75 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
- 1608 J/kg
- Mixed-layer CIN
- -105 J/kg
- Mixed-layer LCL
- 1266 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- 40 m²/s²
- 0-3 km storm-relative helicity
- 166 m²/s²
- Significant tornado parameter
- 0.4
- Supercell composite
- 1.5
The text
As transmitted, in the capitals the NWS used until 2016.
000 WGUS55 KTWC 052057 FFWTWC AZC003-052230- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE TUCSON AZ 155 PM MST THU JUL 5 2001 THE NATIONAL WEATHER SERVICE IN TUCSON HAS ISSUED A * FLASH FLOOD WARNING FOR... WEST CENTRAL COCHISE COUNTY IN ARIZONA * UNTIL 330 PM MST * AT 145 PM MST...WEATHER SERVICE DOPPLER RADAR INDICATED VERY HEAVY RAIN 9 MILES SOUTHEAST OF BENSON NEAR ST. DAVID...OR ABOUT 22 MILES NORTH OF SIERRA VISTA...MOVING WEST AT 10 MPH. DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS SAFELY. VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED QUICKLY. MOVE TO HIGHER GROUND. A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING. DO NOT ATTEMPT TO CROSS SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR BY AUTOMOBILE. LAT...LON 3207 11011 3169 11008 3169 11043 3207| 11043
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 5, 9:25 AM MST, 4 hours 30 minutes earlier.
Area forecast discussion, Jul 5, 9:25 AM MST, 4 hours 30 minutes before
SOUTHEAST ARIZONA FORECAST DISCUSSION NATIONAL WEATHER SERVICE TUCSON AZ 925 AM MST THU JUL 5 2001 SYNOPSIS...ISOLATED TO SCATTERED THUNDERSTORMS WILL CONTINUE FOR THE REMAINDER OF THE WEEK AND INTO THE WEEKEND. HIGH PRESSURE TO OUR NORTH AND NORTHEAST WILL GUIDE DEEPER MOISTURE INTO SOUTHEAST ARIZONA...WITH THUNDERSTORM COVERAGE AND THE THREAT OF HEAVY RAIN INCREASING. DISCUSSION...TSTMS CONTINUE ALONG MEX BORDER IN SOUTHWEST AZ DUE TO TROF ON THE BAJA AND LOW LEVEL CONVERGENCE. SHOULD SEE TSTMS DECREASE NEXT HOUR OR SO AND SHIFT OFF TO THE NORTHWEST. MOISTURE CONTINUES TO DEEPEN OVER THE AREA AS HIGH SHIFTS SLOWLY EAST. BY LATER AFTERNOON WITH HEATING AND GOOD MOISTURE PROFILE ALONG WITH STRONG UPPER DIVERGENCE SHOULD SEE MORE WIDESPREAD TSTMS. ALSO MID/UPPER LEVEL WINDS ARE VEERING AND WEAKENING DURING THE DAY AND TSTMS WILL BE SLOWER AND HEAVIER RAIN PRODUCERS. MODIFIED TUS SOUNDING SHOWS VERY UNSTABLE ATMOSPHERE THIS AFTN. LOOK FOR AN ACTIVE LATE AFTERNOON AND EVENING THRU THE ENTIRE AREA BUT BEST TSTMS SHOULD BE FROM WESTERN COCHISE CTY TO THE WESTERN END OF THE STATE IN BEST MOISTURE AND UPPER DIVERGENCE. .TWC...NONE. m
In the hours before
Special weather statement, Jul 5, 12:09 PM MST, 1 hour 46 minutes before
AZZ019-029>035-050700- SOUTHEAST ARIZONA HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE TUCSON AZ 1205 AM MST THU JUL 5 2001 .SYNOPSIS... A MOISTURE INFLUX FROM THE SOUTH IS HELPING INITIATE THE THUNDERSTORM ACTIVITY ACROSS THE COUNTY WARNING AREA. WITH SLOWER WINDS ALOFT THE POTENTIAL FOR TRAINING OF STORMS AND FLASH FLOODING HAS INCREASED. .DISCUSSION...LOW LEVEL MOISTURE SURGED INTO THE AREA WITH THE 12Z TUS SOUNDING HAVING PWAT VALUE OF 1.47. THUNDERSTORMS HAVE ALREADY ERUPTED ACROSS WEST CENTRAL PIMA COUNTY THROUGH WESTERN COCHISE COUNTY. TRAINING OF THESE STORMS IS LIKELY WITH THE SLOWER WINDS ALOFT. FLASH FLOOD THREAT WILL BE HIGHEST FROM EASTERN- PIMA COUNTY TO CENTRAL COCHISE COUNTY. THE SEVERE WEATHER THREAT WILL ALSO BE HIGH IN THIS SAME LOCATION. STORM MOTION WILL BE TOWARDS THE NORTHWEST AT 15 MPH.
Local storm report, Jul 5, 1:12 PM MST, 43 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TUCSON ARIZONA
0112 PM MST THU JUL 5 2001
TIME (MST) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
1250 PM TUCSON AZ 70 MPH TSTM GUST
07/05/01 PIMA REPORTED AT PRINCE AND ROMERO USING
HAND HELD ANEMOMETERThe office that day
Everything else NWS Tucson, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 5, 9:55 AM MST | Flash Flood Warning | TWC | Pima | 20 min |
| Jul 5, 11:18 AM MST | Flash Flood Warning | TWC | Pima | 12 min |
| Jul 5, 11:45 AM MST | Flash Flood Warning | TWC | Pima | 30 min |
| Jul 5, 12:10 PM MST | Severe Thunderstorm Warning | TWC | Pima | 35 min |
| Jul 5, 12:35 PM MST | Flash Flood Warning | TWC | Pima | |
| Jul 5, 1:55 PM MST | Severe Thunderstorm Warning | TWC | Pinal | 65 min |
Nearby
Flash Flood Warnings in Arizona, 2001Every flash flood warning in 2001
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.