Alert archive / Arizona / Special Weather Statements in 2015
Special Weather Statement, NWS Tucson, AZ
NWS Tucson, AZ issued this special weather statement at Aug 7, 2015, 12:21 PM MST for Pinal County, Arizona. It was in force for 39 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 7, 2015, 12:21 PM MST (19:21 UTC)
- Expired
- Aug 7, 2015, 1:00 PM MST
- In force
- 39 min
- Issued by
- NWS Tucson, AZ
County Pinal County, AZ
The radar
The Phoenix radar (KIWA), 83 km from the middle of the area, began a volume at 19:23 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 (KDMA), launched 12:00Z, 7.4 hours before the alert went out and 65 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
- 983 J/kg
- Mixed-layer CIN
- -88 J/kg
- Mixed-layer LCL
- 1639 m above ground
- 0-6 km bulk shear
- 11 kt
- 0-1 km storm-relative helicity
- -16 m²/s²
- 0-3 km storm-relative helicity
- -12 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
744 WWUS85 KTWC 071921 SPSTWC SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE TUCSON AZ 1221 PM MST FRI AUG 7 2015 AZZ505-072000- SOUTH CENTRAL PINAL COUNTY INCLUDING ELOY/PICACHO PEAK STATE PARK AZ- 1221 PM MST FRI AUG 7 2015 ...SIGNIFICANT WEATHER ADVISORY FOR SOUTH CENTRAL PINAL COUNTY UNTIL 100 PM MST... AT 1220 PM MST...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM NEAR PICACHO PEAK JUST SOUTHWEST OF INTERSTATE 10...MOVING NORTH AT 5 TO 10 MPH. REDUCED VISIBILITIES DUE TO BLOWING DUST AND WINDS IN EXCESS OF 40 MPH WILL BE POSSIBLE WITH THIS STORM. LOCATIONS IMPACTED INCLUDE... PICACHO...PICACHO PEAK AND RED ROCK. PRECAUTIONARY/PREPAREDNESS ACTIONS... BLOWING DUST CAN QUICKLY REDUCE VISIBILITY...CAUSING ACCIDENTS THAT MAY INVOLVE CHAIN COLLISIONS. IF DENSE DUST IS OBSERVED ACROSS A ROADWAY...PULL YOUR VEHICLE OFF THE PAVEMENT AS FAR AS POSSIBLE TO STOP. TURN OFF THE LIGHTS...SET THE EMERGENCY BRAKE...AND TAKE YOUR FOOT OFF THE BRAKE PEDAL TO ENSURE TAIL LIGHTS ARE NOT ILLUMINATED. && LAT...LON 3251 11130 3254 11152 3275 11150 3263 11127 TIME...MOT...LOC 1920Z 197DEG 9KT 3259 11139 $$ MEYER
The office that day
Everything else NWS Tucson, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 7, 11:05 AM MST | Severe Thunderstorm Warning | TWC | Pima, Pinal | 40 min |
| Aug 7, 11:16 AM MST | Flash Flood Warning | TWC | Pima, Pinal | 119 min |
| Aug 7, 11:21 AM MST | Severe Thunderstorm Warning | TWC | Graham | 24 min |
| Aug 7, 11:39 AM MST | Areal Flood Advisory | TWC | Graham | 111 min |
| Aug 7, 12:11 PM MST | Special Weather Statement | TWC | Graham | 49 min |
| Aug 7, 12:31 PM MST | Special Weather Statement | TWC | 29 min | |
| Aug 7, 12:42 PM MST | Special Weather Statement | TWC | 48 min | |
| Aug 7, 12:43 PM MST | Areal Flood Advisory | TWC | Graham, Pinal | 3 hr |
| Aug 7, 12:48 PM MST | Severe Thunderstorm Warning | TWC | Pima | 27 min |
| Aug 7, 12:57 PM MST | Severe Thunderstorm Warning | TWC | Graham, Pinal | 33 min |
| Aug 7, 1:02 PM MST | Areal Flood Advisory | TWC | Graham | 3 hr |
| Aug 7, 1:08 PM MST | Flash Flood Warning | TWC | Pima | 97 min |
| Aug 7, 1:22 PM MST | Flash Flood Warning | TWC | Pinal | 3 hr |
| Aug 7, 1:33 PM MST | Severe Thunderstorm Warning | TWC | Pinal | 27 min |
| Aug 7, 1:36 PM MST | Flash Flood Warning | TWC | Graham | 3 hr |
| Aug 7, 1:36 PM MST | Special Weather Statement | TWC | Pinal | 39 min |
| Aug 7, 1:43 PM MST | Severe Thunderstorm Warning | TWC | Pinal | 47 min |
| Aug 7, 1:55 PM MST | Special Weather Statement | TWC | 50 min | |
| Aug 7, 1:57 PM MST | Blowing Dust Advisory | TWC | Pinal | 2 hr |
| Aug 7, 2:05 PM MST | Areal Flood Advisory | TWC | Pima | 115 min |
| Aug 7, 2:40 PM MST | Flash Flood Warning | TWC | Pima, Pinal | 3 hr |
| Aug 7, 2:43 PM MST | Severe Thunderstorm Warning | TWC | Pima | 15 min |
| Aug 7, 3:53 PM MST | Flash Flood Warning | TWC | Pima, Pinal | 3 hr |
| Aug 7, 4:38 PM MST | Areal Flood Advisory | TWC | Pima, Pinal | 3 hr |
Nearby
Special Weather Statements in Arizona, 2015Every special weather statement in 2015
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.