Alert archive / Arizona / Severe Thunderstorm Warnings in 2002
Severe Thunderstorm Warning 67, NWS Tucson, AZ
NWS Tucson, AZ issued this severe thunderstorm warning at Sep 10, 2002, 8:13 PM MST for Pima County, Arizona. It was in force for 47 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Sep 10, 2002, 8:13 PM MST (03:13 UTC)
- Expired
- Sep 10, 2002, 9:00 PM MST
- In force
- 47 min
- Issued by
- NWS Tucson, AZ
- Area
- Counties, with a storm outline in the text
County Pima County, AZ
The radar
The Tucson radar (KEMX), 113 km from the middle of the area, began a volume at 03:14 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.
Did it verify
Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.
Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.
The nearest sounding before it
Phoenix, AZ (KPSR), launched 00:00Z, 3.2 hours before the alert went out and 158 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
- 1379 J/kg
- Mixed-layer CIN
- -35 J/kg
- Mixed-layer LCL
- 1734 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- 40 m²/s²
- 0-3 km storm-relative helicity
- 157 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 4.4
The text
As transmitted, in the capitals the NWS used until 2016.
695
WUUS55 KTWC 110313
SVRTWC
AZC019-110400-
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TUCSON AZ
812 PM MST TUE SEP 10 2002
THE NATIONAL WEATHER SERVICE IN TUCSON HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
CENTRAL PIMA COUNTY IN ARIZONA
THIS INCLUDES THE CITY OF SELLS
* UNTIL 900 PM MST
* AT 810 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM 5 MILES EAST OF SELLS...MOVING NORTHWEST AT 20
MPH.
GO INSIDE A STRONG BUILDING. DAMAGING WINDS...DEADLY LIGHTNING...AND
HEAVY RAINS ARE LIKELY.
LAT...LON 3184 11182 3191 11163 3234 11165 3213 11216What forecasters said that day
The local office's own words before this severe thunderstorm 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 severe thunderstorm warning went out at Sep 10, 2:30 PM MST, 5 hours 43 minutes earlier.
Area forecast discussion, Sep 10, 2:30 PM MST, 5 hours 43 minutes before
SOUTHEAST ARIZONA FORECAST DISCUSSION NATIONAL WEATHER SERVICE TUCSON AZ 230 PM MST TUE SEP 10 2002 .SYNOPSIS...THE SLOW MOVING LOW PRESSURE SYSTEM NEAR SAN DIEGO WILL FINALLY MOVE NORTHEAST AND OUT OF THE AREA BY FRIDAY. THE LOW PRESSURE WILL PRODUCE THUNDERSTORMS STATEWIDE TONIGHT AND WEDNESDAY. ON THURSDAY...THUNDERSTORMS WILL BE MOVING EASTWARD AND THEN OUT OF THE STATE BY THE WEEKEND. THIS WILL ALLOW TEMPERATURES TO WARM TO SEASONAL NORMALS AND HUMIDITY TO DROP. .DISCUSSION...ACTIVE THUNDERSTORM DAY...WITH UNIDIRECTIONAL FLOW SHOULD GET SOME SPLITTING STORMS...BUT ITS IFFY ALOFT FOR LARGE HAIL SINCE H5 TEMPS ARE ONLY -7C...ALTHOUGH THEY MAY GET COLDER THIS AFTERNOON. UPPER LEVEL DRY AIR WILL RESULT IN A LOT OF ENTRAINMENT OF DRY AIR SO THERE SHOULD BE SOME VIGOROUS VERTICAL MOTIONS...ALL SAID PRESENT WORDING FOR AFTERNOON CONVECTION OF NEAR SEVERE LOOKS PRETTY GOOD. THERE WILL PROBABLY BE SOME CONVECTION ALL NIGHT LONG AS UPPER LOW SWINGS OUT AND DRAWS ELEVATED CAPE INTO THE AREA. HARD TO TELL WHERE THAT WILL BE. QUICK MOTION OF THE STORMS LOWERS ANY POTENTIAL FOR FLASH FLOODING. TOMORROW IT WILL BE WARMER ALOFT WITH LESS DYNAMICS ALTHOUGH STILL ENOUGH MOISTURE FOR STORMS. STORMS SHOULD ALSO MOVE A TAD SLOWER SO POTENTIAL FOR FLASH FLOODING GOES BACK UP A LITTLE. BY THURSDAY DRY AIR WILL CONFINE MOST STORMS TO THE MOUNTAINS AND EASTERN ZONES. THEN ONLY ISOLATED ON FRIDAY. NORTHWEST FLOW FOR THE WEEKEND WILL CONTINUE THE DRYING BUT NOT LET US GET TOO HOT...JUST NEAR NORMAL. .TWC...NONE.
In the hours before
Local storm report, Sep 10, 2:33 PM MST, 5 hours 40 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TUCSON ARIZONA
0233 PM MST TUE SEP 10 2002
TIME (MST) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0230 PM TUCSON AZ 1.50 INCH HAIL
09/10/02 PIMA AT UNIV OF ARIZONA
0230 PM TUCSON AZ .75 INCH HAIL
09/10/02 PIMA DOWNTOWN TUCSONLocal storm report, Sep 10, 6:30 PM MST, 1 hour 43 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TUCSON ARIZONA
0630 PM MST TUE SEP 10 2002
TIME (MST) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0327 PM TUCSON AZ 60 MPH TSTM GUST
09/10/02 PIMA
0230 PM TUCSON AZ 1.5 INCH HAIL
09/10/02 PIMA UNIVERSITY OF ARIZONA
0240 PM TUCSON AZ .75 INCH HAIL
09/10/02 PIMA TUCSON MALL
0329 PM TUCSON AZ 1 INCH HAIL
09/10/02 PIMA WITH 50 MPH WIND GUST
0315 PM TUCSON AZ 1 INCH HAIL
09/10/02 PIMA BROADWAY AND CAMPBELL
0415 PM TUCSON AZ WIND DAMAGE
09/10/02 PIMA NUMEROUS POWER LINES AND TRAFFIC
SIGNALS DOWN
0356 PM TUCSON AZ FLASH FLOOD
09/10/02 PIMA STREET FLOODING ON SOUTH AND
SOUTHWEST SIDE
0430 PM TUCSON AZ FLASH FLOOD
09/10/02 PIMA WIDESPREAD STREET FLOODING WITH
NUMEROUS ROADS AND INTERSECTIONS
CLOSED
0300 PM TUCSON AZ WIND DAMAGE
09/10/02 PIMA MOBILE HOME OVERTURNED NEAR OLD
VAIL ROAD
0245 PM CORONA DE TUCSON AZ FLASH FLOOD
09/10/02 PIMA STREET FLOODING
0320 PM TUCSON AZ 80 MPH TSTM GUST
09/10/02 PIMA UNIVERSITY OF ARIZONA ROOFLocal storm report, Sep 10, 6:30 PM MST, 1 hour 43 minutes before
PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE TUCSON ARIZONA
0630 PM MST TUE SEP 10 2002
TIME (MST) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0230 PM TUCSON AZ 1.5 INCH HAIL
09/10/02 PIMA UNIVERSITY OF ARIZONA
0240 PM TUCSON AZ .75 INCH HAIL
09/10/02 PIMA TUCSON MALL
0245 PM CORONA DE TUCSON AZ FLASH FLOOD
09/10/02 PIMA STREET FLOODING
0300 PM TUCSON AZ WIND DAMAGE
09/10/02 PIMA MOBILE HOME OVERTURNED NEAR OLD
VAIL ROAD
0315 PM TUCSON AZ 1 INCH HAIL
09/10/02 PIMA BROADWAY AND CAMPBELL
0320 PM TUCSON AZ 80 MPH TSTM GUST
09/10/02 PIMA UNIVERSITY OF ARIZONA ROOF
0327 PM TUCSON AZ 60 MPH TSTM GUST
09/10/02 PIMA
0329 PM TUCSON AZ 1 INCH HAIL
09/10/02 PIMA WITH 50 MPH WIND GUST
0356 PM TUCSON AZ FLASH FLOOD
09/10/02 PIMA STREET FLOODING ON SOUTH AND
SOUTHWEST SIDE
0415 PM TUCSON AZ WIND DAMAGE
09/10/02 PIMA NUMEROUS POWER LINES AND TRAFFIC
SIGNALS DOWN
0430 PM TUCSON AZ FLASH FLOOD
09/10/02 PIMA WIDESPREAD STREET FLOODING WITH
NUMEROUS ROADS AND INTERSECTIONS
CLOSEDThe office that day
Everything else NWS Tucson, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 10, 5:00 PM MST | Flash Flood Warning | TWC | Pima | 60 min |
| Sep 10, 5:02 PM MST | Flash Flood Warning | TWC | Pima | 118 min |
| Sep 10, 7:25 PM MST | Flash Flood Warning | TWC | Santa Cruz | 35 min |
| Sep 10, 7:27 PM MST | Flash Flood Warning | TWC | Santa Cruz | 93 min |
Nearby
Severe Thunderstorm Warnings in Arizona, 2002Every severe thunderstorm warning in 2002
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.