Alert archive / Arizona / Severe Thunderstorm Warnings in 1993
Severe Thunderstorm Warning 7, NWS Tucson, AZ
NWS Tucson, AZ issued this severe thunderstorm warning at Aug 5, 1993, 5:31 PM MST for Pima County, Arizona. It was in force for 59 min.
The area
The counties it named.
The facts
- Issued
- Aug 5, 1993, 5:31 PM MST (00:31 UTC)
- Expired
- Aug 5, 1993, 6:30 PM MST
- In force
- 59 min
- Issued by
- NWS Tucson, AZ
- Area
- Whole counties
County Pima County, AZ
The nearest sounding before it
Tuscon, AZ (KTUS), launched 00:00Z, 0.5 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
- 438 J/kg
- Mixed-layer CIN
- -64 J/kg
- Mixed-layer LCL
- 2289 m above ground
- 0-6 km bulk shear
- 13 kt
- 0-1 km storm-relative helicity
- 58 m²/s²
- 0-3 km storm-relative helicity
- 75 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 5, 2:28 PM MST, 3 hours 3 minutes before
AZC003-019-023-060030- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE TUCSON ARIZONA 228 PM MST THU AUG 5 1993 ...THUNDERSTORM ACTIVITY INCREASING... AT 210 PM MST WEATHER RADAR...LIGHTNING DETECTORS...AND VISUAL OBSERVATIONS INDICATED AN INCREASE IN THE AMOUNT OF THUNDERSTORM ACTIVITY IN THE TUCSON AREA...SOUTHERN COCHISE COUNTY...AND SANTA CRUZ COUNTY. AT 200 PM A SPOTTER REPORTED FREQUENT LIGHTNING AND 20 TO 30 MPH WINDS WEST OF TUBAC IN SANTA CRUZ COUNTY. AT 210 PM NATIONAL WEATHER SERVICE RADAR IN TUCSON AND PHOENIX INDICATED THUNDERSTORMS WITH POTENTIALLY HEAVY RAINS 10 MILES WEST OF TUCSON. ALSO AT THIS TIME THUNDER WAS HEARD AT THE AIRPORT AND SHOWER ACTIVITY WAS NOTED NEAR MOUNT LEMMON. MOVEMENT OF MOST STORMS WAS SLOWLY TO THE NORTH AROUND 5 MPH. THUNDERSTORMS WILL CONTINUE TO DEVELOP THROUGHOUT THE AFTERNOON AND EARLY EVENING HOURS...WITH MOST THUNDERSTORM ACTIVITY DIMINISHED BY MIDNIGHT. EVERYONE SHOULD REMAIN AWARE OF ANY THUNDERSTORM ACTIVITY IN THEIR AREA...AND TAKE ANY NECESSARY PRECAUTIONS. THESE STORMS MAY BE ACCOMPANIED BY LOCALLY HEAVY RAIN...FREQUENT LIGHTNING...AND STRONG GUSTY WINDS. FURTHER STATEMENTS OR WARNINGS WILL BE ISSUED AS NECESSARY. MEYER
Special weather statement, Aug 5, 2:30 PM MST, 3 hours 1 minute before
AZC003-019-023-060030- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE TUCSON ARIZONA 228 PM MST THU AUG 5 1993 ...THUNDERSTORM ACTIVITY INCREASING... AT 210 PM MST WEATHER RADAR...LIGHTNING DETECTORS...AND VISUAL OBSERVATIONS INDICATED AN INCREASE IN THE AMOUNT OF THUNDERSTORM ACTIVITY IN THE TUCSON AREA...SOUTHERN COCHISE COUNTY...AND SANTA CRUZ COUNTY. AT 200 PM A SPOTTER REPORTED FREQUENT LIGHTNING AND 20 TO 30 MPH WINDS WEST OF TUBAC IN SANTA CRUZ COUNTY. AT 210 PM NATIONAL WEATHER SERVICE RADAR IN TUCSON AND PHOENIX INDICATED THUNDERSTORMS WITH POTENTIALLY HEAVY RAINS 10 MILES WEST OF TUCSON. ALSO AT THIS TIME THUNDER WAS HEARD AT THE AIRPORT AND SHOWER ACTIVITY WAS NOTED NEAR MOUNT LEMMON. MOVEMENT OF MOST STORMS WAS SLOWLY TO THE NORTH AROUND 5 MPH. THUNDERSTORMS WILL CONTINUE TO DEVELOP THROUGHOUT THE AFTERNOON AND EARLY EVENING HOURS...WITH MOST THUNDERSTORM ACTIVITY DIMINISHED BY MIDNIGHT. EVERYONE SHOULD REMAIN AWARE OF ANY THUNDERSTORM ACTIVITY IN THEIR AREA...AND TAKE ANY NECESSARY PRECAUTIONS. THESE STORMS MAY BE ACCOMPANIED BY LOCALLY HEAVY RAIN...FREQUENT LIGHTNING...AND STRONG GUSTY WINDS. 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 5, 5:31 PM MST | Flash Flood Warning | TWC | Pima | 59 min |
| Aug 6, 1:45 PM MST | Flash Flood Warning | TWC | Pima, Santa Cruz | 2 hr |
| Aug 6, 1:45 PM MST | Severe Thunderstorm Warning | TWC | 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.