Alert archive / Arizona / Special Weather Statements in 2019
Special Weather Statement, NWS Tucson, AZ
NWS Tucson, AZ issued this special weather statement at Aug 6, 2019, 4:20 PM MST. It was in force for 40 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Aug 6, 2019, 4:20 PM MST (23:20 UTC)
- Expired
- Aug 6, 2019, 5:00 PM MST
- In force
- 40 min
- Issued by
- NWS Tucson, AZ
The radar
The Tucson radar (KEMX), 46 km from the middle of the area, began a volume at 23:22 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.
The nearest sounding before it
Tuscon, AZ (KTUS), launched 12:00Z, 11.3 hours before the alert went out and 13 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
- 87 J/kg
- Mixed-layer CIN
- -276 J/kg
- Mixed-layer LCL
- 1843 m above ground
- 0-6 km bulk shear
- 13 kt
- 0-1 km storm-relative helicity
- -79 m²/s²
- 0-3 km storm-relative helicity
- -101 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
148 WWUS85 KTWC 062320 SPSTWC Special Weather Statement National Weather Service Tucson AZ 420 PM MST Tue Aug 6 2019 AZZ504-070000- Tucson Metro Area including Tucson/Green Valley/Marana/Vail- 420 PM MST Tue Aug 6 2019 ...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN PIMA COUNTY UNTIL 500 PM MST... At 420 PM MST, Doppler radar was tracking a strong thunderstorm near San Xavier Community, or 7 miles northwest of Sahuarita, moving northeast at 10 mph. Winds in excess of 40 mph will be possible with this storm. Locations impacted include... Tucson, Marana, Sahuarita, Davis-Monthan Air Force Base, Casas Adobes, Drexel Heights, Flowing Wells, South Tucson, Pascua Pueblo Yaqui Reservation, Tortolita, Summit, Tucson Estates, Valencia West, Tucson International Airport, Saguaro National Park West, Rita Ranch, Picture Rocks and San Xavier Mission. PRECAUTIONARY/PREPAREDNESS ACTIONS... Heavy rainfall is also occurring with this storm, and may lead to localized flooding. Do not drive your vehicle through flooded roadways. Frequent cloud to ground lightning is occurring with this storm. Lightning can strike 10 miles away from a thunderstorm. Seek a safe shelter inside a building or vehicle. && LAT...LON 3190 11107 3235 11121 3239 11105 3208 11076 TIME...MOT...LOC 2320Z 224DEG 7KT 3205 11103 $$ GL
The office that day
Everything else NWS Tucson, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 5, 5:56 PM MST | Special Weather Statement | TWC | 64 min | |
| Aug 5, 6:10 PM MST | Dust Storm Advisory | TWC | Pima, Pinal | 95 min |
| Aug 5, 7:51 PM MST | Special Weather Statement | TWC | Cochise | 39 min |
| Aug 6, 4:19 PM MST | Areal Flood Advisory | TWC | Pima | 86 min |
Nearby
Special Weather Statements in Arizona, 2019Every special weather statement in 2019
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; radar from the NEXRAD Level II archive.