Alert archive / Arizona / Severe Thunderstorm Warnings in 2002
Severe Thunderstorm Warning 8, NWS Tucson, AZ
NWS Tucson, AZ issued this severe thunderstorm warning at Jul 9, 2002, 7:11 PM MST for Pinal County, Arizona. It was in force for 34 min. 1 report came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Jul 9, 2002, 7:11 PM MST (02:11 UTC)
- Expired
- Jul 9, 2002, 7:45 PM MST
- In force
- 34 min
- Issued by
- NWS Tucson, AZ
- Area
- Counties, with a storm outline in the text
County Pinal County, AZ
The radar
The Phoenix radar (KIWA), 69 km from the middle of the area, began a volume at 02:12 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 9, 7:20 PM MST | Thunderstorm Wind | Eloy, AZ | A line of severe thunderstorms moved across southeast Pinal county. Damaging winds downed 2 power poles and ripped off small porches and awnings in a trailer park in the Eloy area. |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jul 9, 4:30 PM MST | Severe Thunderstorm Watch | SPC | 5 hr |
The nearest sounding before it
Phoenix, AZ (KPSR), launched 00:00Z, 2.2 hours before the alert went out and 83 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
- 443 J/kg
- Mixed-layer CIN
- -95 J/kg
- Mixed-layer LCL
- 3138 m above ground
- 0-6 km bulk shear
- 19 kt
- 0-1 km storm-relative helicity
- 2 m²/s²
- 0-3 km storm-relative helicity
- 82 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
293
WUUS55 KTWC 100211
SVRTWC
AZC021-100245-
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TUCSON AZ
710 PM MST TUE JUL 9 2002
THE NATIONAL WEATHER SERVICE IN TUCSON HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
SOUTHWESTERN PINAL COUNTY IN ARIZONA
* UNTIL 745 PM MST
* AT 704 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
SEVERE THUNDERSTORM 5 MILES NORTHEAST OF ELOY...OR ABOUT 20 MILES
EAST OF CASA GRANDE...MOVING SOUTHWEST AT 20 MPH.
DAMAGING WINDS TO 55 MPH WILL PRODUCE BLOWING DUST...REDUCING THE
VISIBILITY TO LESS THAN A QUARTER MILE...ESPECIALLY ALONG INTERSTATE
10 BETWEEN PICACHO PEAK AND CASA GRANDE. BRIEF HEAVY RAIN CAN BE
ALSO BE EXPECTED.
LAT...LON 3254 11221 3254 11137 3303 11125 3271 11178
3279 11184 3267 11220The office that day
Everything else NWS Tucson, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 9, 5:05 PM MST | Severe Thunderstorm Warning | TWC | Pima | 40 min |
| Jul 9, 5:16 PM MST | Severe Thunderstorm Warning | TWC | Pinal | 29 min |
| Jul 10, 2:26 PM MST | Severe Thunderstorm Warning | TWC | Pinal | 34 min |
| Jul 10, 2:57 PM MST | Severe Thunderstorm Warning | TWC | Pima | 48 min |
| Jul 10, 3:20 PM MST | Severe Thunderstorm Warning | TWC | Pima, Pinal | 40 min |
| Jul 10, 4:00 PM MST | Severe Thunderstorm Warning | TWC | Pinal | 30 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.