Alert archive / Arizona / Severe Thunderstorm Warnings in 2001
Severe Thunderstorm Warning 13, NWS Tucson, AZ
NWS Tucson, AZ issued this severe thunderstorm warning at Jul 5, 2001, 1:55 PM MST for Pinal County, Arizona. It was in force for 65 min. 2 reports came from 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, with what was reported inside it.
The facts
- Issued
- Jul 5, 2001, 1:55 PM MST (20:55 UTC)
- Expired
- Jul 5, 2001, 3:00 PM MST
- In force
- 65 min
- Issued by
- NWS Tucson, AZ
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
County Pinal County, AZ
The radar
The Phoenix radar (KIWA), 90 km from the middle of the area, began a volume at 20:56 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 5, 2:30 PM MST | Thunderstorm Wind | Mammoth, AZ | |
| Jul 5, 2:33 PM MST | Hail 0.75 | Mammoth, AZ |
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 nearest sounding before it
Tuscon, AZ (KTUS), launched 12:00Z, 8.9 hours before the alert went out and 70 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 WUUS55 KTWC 052055 SVRTUS AZC021-052200- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TUCSON AZ 155 PM MST THU JUL 5 2001 THE NATIONAL WEATHER SERVICE IN TUCSON HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... SOUTHEASTERN PINAL COUNTY IN ARIZONA THIS INCLUDES THE TOWN OF SAN MANUEL * UNTIL 300 PM MST * AT 145 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED TWO SEVERE THUNDERSTORMS WITH VERY HEAVY RAIN IN SOUTHEAST PINAL COUNTY MOVING NORTHWEST AROUND 15 MPH. THE FIRST STORM IS IN A REMOTE AREA NEAR STATE HIGHWAY 79 NORTH OF ORACLE JUNCTION. THE SECOND STORM IS 5 MILES SOUTHEAST OF SAN MANUEL MOVING NORTHWEST AROUND 15 MPH. RESIDENTS OF SAN MANUEL AND MAMMOTH SHOULD PREPARED FOR SEVEREL WEATHER BETWEEN 2 PM AND 230 PM. THESE STORM LIKELY WILL GENERATE DUST STORMS NORTH OF THESE STORMS. REMEMBER...A SEVERE THUNDERSTORM CAN PRODUCE LARGE HAIL...DAMAGING WINDS IN EXCESS OF 55 MPH...DEADLY LIGHTNING...AND HEAVY RAIN. LAT...LON 3297 11120 3256 11118 3253 11046 3299 11045 GLUECK
The 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 | Flash Flood Warning | TWC | Cochise | 35 min |
Nearby
Severe Thunderstorm Warnings in Arizona, 2001Every severe thunderstorm 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.