Alert archive / Arizona / Severe Thunderstorm Warnings in 1993
Severe Thunderstorm Warning 4, NWS Tucson, AZ
NWS Tucson, AZ issued this severe thunderstorm warning at Aug 2, 1993, 8:10 PM MST for Pima County, Arizona. It was in force for 2 hr.
The area
The counties it named.
The facts
- Issued
- Aug 2, 1993, 8:10 PM MST (03:10 UTC)
- Expired
- Aug 2, 1993, 10:15 PM MST
- In force
- 2 hr
- Issued by
- NWS Tucson, AZ
- Area
- Whole counties
County Pima County, AZ
The nearest sounding before it
Tuscon, AZ (KTUS), launched 00:00Z, 3.2 hours before the alert went out and 84 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
- 615 J/kg
- Mixed-layer CIN
- -7 J/kg
- Mixed-layer LCL
- 3119 m above ground
- 0-6 km bulk shear
- 13 kt
- 0-1 km storm-relative helicity
- 5 m²/s²
- 0-3 km storm-relative helicity
- 28 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 2, 6:00 PM MST, 2 hours 10 minutes before
AZC003-019-023-030300- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE TUCSON ARIZONA 600 PM MST MON AUG 2 1993 AT 550 PM MST, TUCSON WEATHER RADAR AND SATELLITE IMAGES INDICATED SCATTERED RAINSHOWERS AND THUNDERSTORMS FORMING OVER SANTA CRUZ, COCHISE AND PARTS OF SOUTHEAST PIMA COUNTIES. ONE STORM ABOUT 5 MILES NORTH OF ELFRIDA APPEARED TO BE QUITE INTENSE, WITH STRONG RETURNS ON THE RADAR. SCATTERED THUNDERSTORMS AND RAINSHOWERS WERE OVER SANTA CRUZ COUNTY. THESE STORMS COULD CAUSE PROBLEMS OVER PARTS OF I-19, PENA BLANCA, AND ARIVACA LAKES. IN PIMA COUNTY, STORMS WERE FORMING OVER THE RINCON MOUNTAINS AND THE SOUTHERN PORTION OF THE CATALINAS. WHILE MOST OF THESE STORMS ARE NOT IN THE VERY STRONG RANGE, ALL THUNDERSTORMS CAN PRODUCE DANGEROUS CLOUD TO GROUND LIGHTNING, HEAVY RAINFALL WITH THE POSSIBILITY OF LOCAL FLOODING, AND STRONG GUSTY WINDS. PERSONS OUT AND ABOUT, ESPECIALLY ON SOUTHEASTERN ARIZONA LAKES SHOULD BE ALERT TO RAPIDLY CHANGING CONDITIONS. IF STORMS APPROACH TAKE SHELTER. IF IN A BOAT GET OFF OF THE WATER. STRONG WINDS MAY SWAMP SMALL CRAFT, AND SMALL BOATS OFFER NO PROTECTION FROM LIGHTNING STRIKES. FURTHER STATEMENTS WILL BE ISSUED AS NECESSARY. BARTOLOME
Special weather statement, Aug 2, 6:03 PM MST, 2 hours 7 minutes before
AZC003-019-023-030300- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE TUCSON ARIZONA 600 PM MST MON AUG 2 1993 AT 550 PM MST, TUCSON WEATHER RADAR AND SATELLITE IMAGES INDICATED SCATTERED RAINSHOWERS AND THUNDERSTORMS FORMING OVER SANTA CRUZ, COCHISE AND PARTS OF SOUTHEAST PIMA COUNTIES. ONE STORM ABOUT 5 MILES NORTH OF ELFRIDA APPEARED TO BE QUITE INTENSE, WITH STRONG RETURNS ON THE RADAR. SCATTERED THUNDERSTORMS AND RAINSHOWERS WERE OVER SANTA CRUZ COUNTY. THESE STORMS COULD CAUSE PROBLEMS OVER PARTS OF I-19, PENA BLANCA, AND ARIVACA LAKES. IN PIMA COUNTY, STORMS WERE FORMING OVER THE RINCON MOUNTAINS AND THE SOUTHERN PORTION OF THE CATALINAS. WHILE MOST OF THESE STORMS ARE NOT IN THE VERY STRONG RANGE, ALL THUNDERSTORMS CAN PRODUCE DANGEROUS CLOUD TO GROUND LIGHTNING, HEAVY RAINFALL WITH THE POSSIBILITY OF LOCAL FLOODING, AND STRONG GUSTY WINDS. PERSONS OUT AND ABOUT, ESPECIALLY ON SOUTHEASTERN ARIZONA LAKES SHOULD BE ALERT TO RAPIDLY CHANGING CONDITIONS. IF STORMS APPROACH TAKE SHELTER. IF IN A BOAT GET OFF OF THE WATER. STRONG WINDS MAY SWAMP SMALL CRAFT, AND SMALL BOATS OFFER NO PROTECTION FROM LIGHTNING STRIKES. FURTHER STATEMENTS WILL BE I SSUED AS NECESSARY. BARTOLOME
Special weather statement, Aug 2, 7:41 PM MST, 29 minutes before
AZC019-030345- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE TUCSON ARIZONA 741 PM MST MON AUG 2 1993 AT 730 PM MST TUCSON WEATHER RADAR INDICATED A LARGE THUNDERSTORM COMPLEX APPROACHING REDINGTON PASS. PART OF THIS COMPLEX IS ALREADY OVER PART OF THE GREATER TUCSON AREA. THIS STORM IS PRODUCING MUCH DANGEROUS CLOUD TO GROUND LIGHTNING. AS THESE STORM ARE DEVELOPING SLOWLY TO THE SOUTHWEST, THEY WILL CONTINUE TO MOVE OVER TUCSON. LIGHTNING DETECTORS HAVE INDICATED MANY STRIKES DURING THE PAST HALF HOUR. A WEATHER SPOTTER IN THE BEAR CANYON AREA REPORTED A QUARTER INCH OF RAIN IN PERIODIC SHOWERS. HE ALSO SAID THAT THERE WERE MORE STORMS TO THE NORTHEAST OF HIM. PERSONS IN THE VICINITY OF THESE STORMS SHOULD TAKE COVER IMMEDIATELY FROM THE FREQUENT LIGHTNING STROKES. STAY INSIDE, AND DO NOT GET UNDER TREES. BARTOLOME
Special weather statement, Aug 2, 7:42 PM MST, 28 minutes before
AZC019-030345- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE TUCSON ARIZONA 741 PM MST MON AUG 2 1993 AT 730 PM MST TUCSON WEATHER RADAR INDICATED A LARGE THUNDERSTORM COMPLEX APPROACHING REDINGTON PASS. PART OF THIS COMPLEX IS ALREADY OVER PART OF THE GREATER TUCSON AREA. THIS STORM IS PRODUCING MUCH DANGEROUS CLOUD TO GROUND LIGHTNING. AS THESE STORM ARE DEVELOPING SLOWLY TO THE SOUTHWEST, THEY WILL CONTINUE TO MOVE OVER TUCSON. LIGHTNING DETECTORS HAVE INDICATED MANY STRIKES DURING THE PAST HALF HOUR. A WEATHER SPOTTER IN THE BEAR CANYON AREA REPORTED A QUARTER INCH OF RAIN IN PERIODIC SHOWERS. HE ALSO SAID THAT THERE WERE MORE STORMS TO THE NORTHEAST OF HIM. PERSONS IN THE VICINITY OF THESE STORMS SHOULD TAKE COVER IMMEDIATELY FROM THE FREQUENT LIGHTNING STROKES. STAY INSIDE, AND DO NOT GET UNDER TREES. BARTOLOME
The office that day
Everything else NWS Tucson, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 2, 8:10 PM MST | Flash Flood Warning | TWC | Pima | 2 hr |
| Aug 3, 1:10 PM MST | Flash Flood Warning | TWC | Cochise | 65 min |
| Aug 3, 1:10 PM MST | Severe Thunderstorm Warning | TWC | Cochise | 65 min |
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.