Alert archive / Arizona / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 41, NWS Tucson, AZ

July 25, 2002Cochise County, Arizona

NWS Tucson, AZ issued this severe thunderstorm warning at Jul 25, 2002, 5:00 PM MST for Cochise County, Arizona. It was in force for 30 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 25, 2002, 5:00 PM MST (00:00 UTC)
Expired: Jul 25, 2002, 5:30 PM MST
In force: 30 min
Issued by: NWS Tucson, AZ
Area: Counties, with a storm outline in the text

County Cochise County, AZ

The radar

The Tucson radar (KEMX), 31 km from the middle of the area, began a volume at 00:04 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 25, 5:15 PM MST	Thunderstorm Wind	Benson, 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 00:00Z, 0.0 hours before the alert went out and 57 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 929 J/kg
Mixed-layer CIN: -11 J/kg
Mixed-layer LCL: 2754 m above ground
0-6 km bulk shear: 18 kt
0-1 km storm-relative helicity: -3 m²/s²
0-3 km storm-relative helicity: 33 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

843 
WUUS55 KTWC 260000
SVRTWC
AZC003-260030-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TUCSON AZ
500 PM MST THU JUL 25 2002

THE NATIONAL WEATHER SERVICE IN TUCSON HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  WEST CENTRAL COCHISE COUNTY IN ARIZONA

* UNTIL 530 PM MST

* AT 448 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 
  A SEVERE THUNDERSTORM NEAR BENSON...MOVING SLOWLY TO THE SOUTHEAST.

GO INSIDE A STRONG BUILDING. DAMAGING WINDS...DEADLY LIGHTNING...AND
HEAVY RAINS ARE LIKELY.

LARGE HAIL IS LIKELY. PUT YOUR VEHICLE IN A GARAGE OR CARPORT AND
MOVE TO A STURDY SHELTER.

LAT...LON 3204 11042 3189 11036 3199 11015 3209 11028

GLUECK

The office that day

Everything else NWS Tucson, AZ issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 26, 2:23 PM MST	Flash Flood Warning	TWC	Cochise	22 min
Jul 26, 2:24 PM MST	Flash Flood Warning	TWC	Cochise	81 min
Jul 26, 3:14 PM MST	Flash Flood Warning	TWC	Pima	61 min
Jul 26, 3:14 PM MST	Flash Flood Warning	TWC	Pima	2 hr
Jul 26, 3:32 PM MST	Flash Flood Warning	TWC	Santa Cruz	28 min
Jul 26, 3:32 PM MST	Flash Flood Warning	TWC	Santa Cruz	88 min

Nearby

Severe Thunderstorm Warnings in Arizona, 2002 Every 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.