Alert archive / Arizona / Severe Thunderstorm Warnings in 1993
Severe Thunderstorm Warning 13, NWS Tucson, AZ
NWS Tucson, AZ issued this severe thunderstorm warning at Aug 19, 1993, 1:40 PM MST for Pima County, Santa Cruz County, Arizona. It was in force for 2 hr.
The area
The counties it named.
The facts
- Issued
- Aug 19, 1993, 1:40 PM MST (20:40 UTC)
- Expired
- Aug 19, 1993, 3:45 PM MST
- In force
- 2 hr
- Issued by
- NWS Tucson, AZ
- Area
- Whole counties
Counties Pima County, AZ, Santa Cruz County, AZ
The nearest sounding before it
Tuscon, AZ (KTUS), launched 12:00Z, 8.7 hours before the alert went out and 56 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
- 97 J/kg
- Mixed-layer CIN
- -162 J/kg
- Mixed-layer LCL
- 1706 m above ground
- 0-6 km bulk shear
- 15 kt
- 0-1 km storm-relative helicity
- 89 m²/s²
- 0-3 km storm-relative helicity
- 98 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
What 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.
In the hours before
Special weather statement, Aug 19, 12:10 PM MST, 1 hour 30 minutes before
AZC003-019-023-192115- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE TUCSON ARIZONA 1210 PM MST THU AUG 19 1993 ...THUNDERSTORMS IN SOUTHEAST ARIZONA... AT 1205 PM MST WEATHER RADAR SHOWED THUNDERSTORMS OCCURRING AND DEVELOPING THROUGHOUT SANTA CRUZ, COCHISE, AND EASTERN PIMA COUNTIES. THE STRONGEST STORMS APPEARED TO BE IN CENTRAL SANTA CRUZ COUNTY... WITH ANOTHER AREA OF STRONG STORMS DEVELOPING APPROXIMATELY 35 MILES WEST OF TUCSON. AT 1210 PM CLOUDS WERE ALSO OBSERVED TO BE BUILDING IN AND AROUND THE TUCSON AREA. MOST CELLS WERE MOVING TO THE NORTH AT 5 TO 10 MPH. EXPECT DEVELOPMENT TO CONTINUE THROUGHOUT SOUTHEAST ARIZONA THE REST OF THE AFTERNOON AND EARLY EVENING. SOME OF THESE STORMS WILL PRODUCE HEAVY RAIN...STRONG GUSTY WINDS...FREQUENT LIGHTNING...AND SMALL HAIL. THUNDERSTORM DEVELOPMENT SEEMS MORE WIDESPREAD AND IS BEGINNING EARLIER TODAY THAN IN RECENT DAYS. ALL PERSONS IN SOUTHEAST ARIZONA SHOULD BE ALERT TO WHAT CAN BE A RAPIDLY CHANGING WEATHER SITUATION. FURTHER STATEMENTS OR WARNINGS WILL BE ISSUED AS NECESSARY. MEYER
Special weather statement, Aug 19, 12:13 PM MST, 1 hour 27 minutes before
AZC003-019-023-192115- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE TUCSON ARIZONA 1210 PM MST THU AUG 19 1993 ...THUNDERSTORMS IN SOUTHEAST ARIZONA... AT 1205 PM MST WEATHER RADAR SHOWED THUNDERSTORMS OCCURRING AND DEVELOPING THROUGHOUT SANTA CRUZ, COCHISE, AND EASTERN PIMA COUNTIES. THE STRONGEST STORMS APPEARED TO BE IN CENTRAL SANTA CRUZ COUNTY... WITH ANOTHER AREA OF STRONG STORMS DEVELOPING APPROXIMATELY 35 MILES WEST OF TUCSON. AT 1210 PM CLOUDS WERE ALSO OBSERVED TO BE BUILDING IN AND AROUND THE TUCSON AREA. MOST CELLS WERE MOVING TO THE NORTH AT 5 TO 10 MPH. EXPECT DEVELOPMENT TO CONTINUE THROUGHOUT SOUTHEAST ARIZONA THE REST OF THE AFTERNOON AND EARLY EVENING. SOME OF THESE STORMS WILL PRODUCE HEAVY RAIN...STRONG GUSTY WINDS...FREQUENT LIGHTNING...AND SMALL HAIL. THUNDERSTORM DEVELOPMENT SEEMS MORE WIDESPREAD AND IS BEGINNING EARLIER TODAY THAN IN RECENT DAYS. ALL PERSONS IN SOUTHEAST ARIZONA SHOULD BE AL>ERT TO WHAT CAN BE A RAPIDLY CHANGING WEATHER SITUATION. FURTHER STATEMENTS OR WARNINGS WILL BE ISSUED AS NECESSARY. MEYER
The office that day
Everything else NWS Tucson, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 19, 1:40 PM MST | Flash Flood Warning | TWC | Pima, Santa Cruz | 2 hr |
| Aug 19, 3:00 PM MST | Flash Flood Warning | TWC | Cochise, Pima, Santa Cruz | 2 hr |
| Aug 19, 3:00 PM MST | Severe Thunderstorm Warning | TWC | Cochise, Pima, Santa Cruz | 2 hr |
Nearby
Severe Thunderstorm Warnings in Arizona, 1993Every severe thunderstorm warning in 1993
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.