Alert archive / Arizona / Flash Flood Warnings in 1999
Flash Flood Warning 2, NWS Tucson, AZ
NWS Tucson, AZ issued this flash flood warning at Jul 5, 1999, 3:18 PM MST for Pima County, Arizona. It was in force for 92 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
- Jul 5, 1999, 3:18 PM MST (22:18 UTC)
- Expired
- Jul 5, 1999, 4:50 PM MST
- In force
- 92 min
- Issued by
- NWS Tucson, AZ
- Area
- Whole counties
County Pima County, AZ
The radar
The Tucson radar (KEMX), 112 km from the middle of the area, began a volume at 22:21 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 12:00Z, 10.3 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
- 26 J/kg
- Mixed-layer CIN
- -296 J/kg
- Mixed-layer LCL
- 2467 m above ground
- 0-6 km bulk shear
- 6 kt
- 0-1 km storm-relative helicity
- -9 m²/s²
- 0-3 km storm-relative helicity
- -9 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 052217 FFWTUS AZC019-052350- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE TUCSON AZ 318 PM MST MON JUL 5 1999 THE NATIONAL WEATHER SERVICE IN TUCSON HAS ISSUED A * FLASH FLOOD WARNING FOR... EASTERN PIMA COUNTY IN SOUTHERN ARIZONA INCLUDING TUCSON * UNTIL 450 PM MST * AT 315 PM MST... NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A THUNDERSTORM WITH VERY HEAVY RAIN OVER EAST TUCSON... MOVING WEST AT 5 MPH . * THE THUNDERSTORM WILL PRODUCE VERY HEAVY RAIN WITH FLASH FLOODING LIKELY IN THE CITY OF TUCSON.
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, 2:30 PM MST, 48 minutes earlier.
Area forecast discussion, Jul 5, 2:30 PM MST, 48 minutes before
SOUTHEAST ARIZONA FORECAST DISCUSSION NATIONAL WEATHER SERVICE TUCSON AZ 230 PM MST MON JUL 5 1999 SYNOPSIS...HIGH PRESSURE ALOFT WILL MOVE NEAR THE FOUR CORNERS AREA TONIGHT. THIS PATTERN WILL REMAIN THROUGH THE WEEK...AND WILL CONTINUE TO BRING MOISTURE INTO SOUTHEAST ARIZONA. EXPECT SCATTERED MAINLY AFTERNOON AND EVENING THUNDERSTORMS...BUT A FEW STORMS SHOULD LINGER INTO THE OVERNIGHT HOURS THE NEXT SEVERAL DAYS. DISCUSSION...NICE STORMS. BETTER ORGANIZATION TODAY...AND THESE THINGS ARE DOING A MUCH BETTER JOB AT WRINGING MOISTURE OUT OF THE ATMOSPHERE. STRONG MONSOON SIGNATURE SETTING UP FOR THIS WEEK. BUSY TIME...ONLY THING I CAN REALLY SAY THAT MEANS ANYTHING IS THAT IT WILL BE A STRONG THUNDERSTORM WEEK...DECENT CHANCE AT DOING A LITTLE CATCH UP ON THE RAIN. EVERYTHING COMING TOGETHER...EASTERLY FLOW...MOISTURE...WIGGLES IN THE EASTERLYS...BET WE EVEN SURGE BEFORE THE WEEKS OUT. HIGH GRADE MONSOON TYPE FORECAST LOOKS FINE. MEYER .TWC...NONE.
In the hours before
Special weather statement, Jul 5, 12:45 PM MST, 2 hours 33 minutes before
AZZ019-029>035-060500-
SPECIAL WEATHER STATEMENT...SOUTHEAST ARIZONA CONVECTIVE OUTLOOK
NATIONAL WEATHER SERVICE TUCSON AZ
1245 PM MST MON JUL 5 1999...THIS PRODUCT IS NOT UPDATED
*CONDITIONAL* *CONDITIONAL*
COUNTY AREAL PROBABILITY RAIN GREATER THAN STORM
COVERAGE OF SEVERE 1.00 2.00 MOTION
COCHISE 50 20 50 10 W 7
GRAHAM 50 15 35 0 W 7
GREENLEE 50 10 35 0 W 8
TUCSON/ERN PIMA 45 20 45 10 NW 9
TOHONO OODHAM 30 10 30 0 NW 9
SOUTHEAST PINAL 30 10 30 0 NW 8
WESTERN PIMA 10 0 20 0 NW 6
SANTA CRUZ 45 20 55 15 NW 8
SYNOPSIS...VERY GOOD AVIALABLE MOISTURE AND INCREASED INSTABILITY
OVER YESTERDAY. STRUCTURE AND DYNAMICS WILL SUPPORT MORE
ORGANIZED THUNDERSTORMS COMPARED TO YESTERDAY. HEAVY RAINFALL
AND DAMAGING WINDS BOTH A CONSIDERATION. EXPECT SOME ACTIVITY
TO LINGER OVERNIGHT.
*****************************************************************
KEY...
AREAL COVERAGE - PERCENT OF COUNTY OR AREA THAT WILL EXPERIENCE
THUNDERSTORMS
PROB OF SEVERE - THE PROBABILITY THAT AN INDIVIDUAL STORM WILL
REACH SEVERE LEVELS (DAMAGING WIND AND/OR
LARGE HAIL)
RAIN GRTR THAN - THE PROBABILITY THAT AN INDIVIDUAL STORM WILL
PRODUCE RAIN EXCEEDING 1 INCH OR 2 INCHES IN
ANY LOCATION
STORM MOTION - GENERAL DIRECTION TO WHICH THE STORMS WILL
LIKELY MOVE AND SPEED IN MPH
NOTE...
VALID TIME IS FROM 12:45 PM TO 12 MIDNIGHT OF THE DAY OF ISSUANCE.
THIS PRODUCT IS NOT TO BE USED IN PLACE OF SEVERE THUNDERSTORM OR
FLASH FLOOD WARNINGS OR WATCHES. THIS PRODUCT IS ONLY USED FOR
OUTLOOK PURPOSES. CORRESPONDING GRAPHICS MAY BE FOUND ON THE NWS
TUCSON INTERNET PAGE AT
HTTP://NIMBO.WRH.NOAA.GOV/TUCSON/SWO/SWO.SHTML
END/Special weather statement, Jul 5, 12:45 PM MST, 2 hours 33 minutes before
AZZ019-029>035-060500-
SPECIAL WEATHER STATEMENT...SOUTHEAST ARIZONA CONVECTIVE OUTLOOK
NATIONAL WEATHER SERVICE TUCSON AZ
1245 PM MST MON JUL 5 1999...THIS PRODUCT IS NOT UPDATED
*CONDITIONAL* *CONDITIONAL*
COUNTY AREAL PROBABILITY RAIN GREATER THAN STORM
COVERAGE OF SEVERE 1.00 2.00 MOTION
COCHISE 50 20 50 10 W 7
GRAHAM 50 15 35 0 W 7
GREENLEE 50 10 35 0 W 8
TUCSON/ERN PIMA 45 20 45 10 NW 9
TOHONO OODHAM 30 10 30 0 NW 9
SOUTHEAST PINAL 30 10 30 0 NW 8
WESTERN PIMA 10 0 20 0 NW 6
SANTA CRUZ 45 20 55 15 NW 8
SYNOPSIS...VERY GOOD AVIALABLE MOISTURE AND INCREASED INSTABILITY
OVER YESTERDAY. STRUCTURE AND DYNAMICS WILL SUPPORT MORE
ORGANIZED THUNDERSTORMS COMPARED TO YESTERDAY. HEAVY RAINFALL
AND DAMAGING WINDS BOTH A CONSIDERATION. EXPECT SOME ACTIVITY
TO LINGER OVERNIGHT.
*****************************************************************
KEY...
AREAL COVERAGE - PERCENT OF COUNTY OR AREA THAT WILL EXPERIENCE
THUNDERSTORMS
PROB OF SEVERE - THE PROBABILITY THAT AN INDIVIDUAL STORM WILL
REACH SEVERE LEVELS (DAMAGING WIND AND/OR
LARGE HAIL)
RAIN GRTR THAN - THE PROBABILITY THAT AN INDIVIDUAL STORM WILL
PRODUCE RAIN EXCEEDING 1 INCH OR 2 INCHES IN
ANY LOCATION
STORM MOTION - GENERAL DIRECTION TO WHICH THE STORMS WILL
LIKELY MOVE AND SPEED IN MPH
NOTE...
VALID TIME IS FROM 12:45 PM TO 12 MIDNIGHT OF THE DAY OF ISSUANCE.
THIS PRODUCT IS NOT TO BE USED IN PLACE OF SEVERE THUNDERSTORM OR
FLASH FLOOD WARNINGS OR WATCHES. THIS PRODUCT IS ONLY USED FOR
OUTLOOK PURPOSES. CORRESPONDING GRAPHICS MAY BE FOUND ON THE NWS
TUCSON INTERNET PAGE AT
HTTP://NIMBO.WRH.NOAA.GOV/TUCSON/SWO/SWO.SHTML
END/The office that day
Everything else NWS Tucson, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 5, 12:38 PM MST | Flash Flood Warning | TWC | Pima | 92 min |
| Jul 5, 12:38 PM MST | Severe Thunderstorm Warning | TWC | Santa Cruz | 32 min |
| Jul 5, 1:03 PM MST | Severe Thunderstorm Warning | TWC | Pinal | 42 min |
| Jul 5, 2:43 PM MST | Severe Thunderstorm Warning | TWC | Greenlee | 47 min |
| Jul 5, 2:50 PM MST | Severe Thunderstorm Warning | TWC | Pima | 65 min |
| Jul 5, 3:39 PM MST | Severe Thunderstorm Warning | TWC | Pima, Santa Cruz | 61 min |
Nearby
Flash Flood Warnings in Arizona, 1999Every flash flood warning in 1999
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.