Alert archive / Arizona / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 49, NWS Flagstaff, AZ
NWS Flagstaff, AZ issued this severe thunderstorm warning at Oct 12, 2012, 1:43 AM MST for Gila County, Navajo County, Arizona. It was in force for 32 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
- Oct 12, 2012, 1:43 AM MST (08:43 UTC)
- Expired
- Oct 12, 2012, 2:15 AM MST
- In force
- 32 min
- Issued by
- NWS Flagstaff, AZ
- Area
- Storm-based polygon
Counties Gila County, AZ, Navajo County, AZ
The radar
The Flagstaff radar (KFSX), 80 km from the middle of the area, began a volume at 08:43 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
Flgstf/Belemont, AZ (KFGZ), launched 00:00Z, 8.7 hours before the alert went out and 169 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
- 29 J/kg
- Mixed-layer CIN
- -9 J/kg
- Mixed-layer LCL
- 1607 m above ground
- 0-6 km bulk shear
- 51 kt
- 0-1 km storm-relative helicity
- 141 m²/s²
- 0-3 km storm-relative helicity
- 371 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted, in the capitals the NWS used until 2016.
519 WUUS55 KFGZ 120843 SVRFGZ AZC007-017-120915- /O.NEW.KFGZ.SV.W.0049.121012T0843Z-121012T0915Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE FLAGSTAFF AZ 143 AM MST FRI OCT 12 2012 THE NATIONAL WEATHER SERVICE IN FLAGSTAFF HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... CENTRAL GILA COUNTY IN EAST CENTRAL ARIZONA... SOUTH CENTRAL NAVAJO COUNTY IN NORTHEAST ARIZONA... * UNTIL 215 AM MST * AT 139 AM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED SOUTH SOUTHWESTNEAR CIBECUE...OR 30 MILES SOUTHEAST OF FOREST LAKES...AND MOVING NORTH AT 55 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... CIBDUE IN SOUTHERN NAVAJO COUNTY AT 150 AM MST PRECAUTIONARY/PREPAREDNESS ACTIONS... DOPPLER RADAR HAS INDICATED SOME ROTATION WITHIN THIS STORM. WHILE NOT IMMEDIATELY LIKELY...A TORNADO MAY STILL DEVELOP. IF A TORNADO IS SPOTTED...ACT QUICKLY AND MOVE TO A PLACE OF SAFETY IN A STURDY STRUCTURE...SUCH AS A BASEMENT OR SMALL INTERIOR ROOM. && LAT...LON 3438 11051 3432 11025 3386 11045 3392 11066 TIME...MOT...LOC 0841Z 198DEG 49KT 3399 11052 $$ TC
1 follow-up statement
665 WWUS55 KFGZ 120904 SVSFGZ SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE FLAGSTAFF AZ 204 AM MST FRI OCT 12 2012 AZC007-017-120915- /O.CON.KFGZ.SV.W.0049.000000T0000Z-121012T0915Z/ GILA AZ-NAVAJO AZ- 204 AM MST FRI OCT 12 2012 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 215 AM MST FOR SOUTH CENTRAL NAVAJO AND CENTRAL GILA COUNTIES... AT 158 AM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED 12 MILES NORTH OF CIBECUE...OR 23 MILES WEST OF SHOW LOW... MOVING NORTHEAST AT 50 MPH. THE SEVERE THUNDERSTORM WILL MOVE NORTHEAST AND MOVE UP BETWEEN CLAY SPRINGS AND ARIPINE BY AROUND 215 AM MST. PRECAUTIONARY/PREPAREDNESS ACTIONS... DOPPLER RADAR HAS INDICATED ROTATION WITHIN THIS STORM. A TORNADO MAY STILL BE POSSIBLE WITH THIS STORM IF A TORNADO IS SPOTTED...ACT QUICKLY AND MOVE TO A PLACE OF SAFETY IN A STURDY STRUCTURE...SUCH AS A BASEMENT OR SMALL INTERIOR ROOM. && LAT...LON 3438 11051 3432 11025 3386 11045 3392 11066 TIME...MOT...LOC 0901Z 204DEG 44KT 3423 11042 $$ TC
The office that day
Everything else NWS Flagstaff, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 11, 9:03 PM MST | Severe Thunderstorm Warning | FGZ | Gila | 27 min |
| Oct 11, 9:24 PM MST | Severe Thunderstorm Warning | FGZ | Coconino, Gila, Navajo | 36 min |
| Oct 12, 2:08 AM MST | Tornado Warning | FGZ | Navajo | 36 min |
Nearby
Severe Thunderstorm Warnings in Arizona, 2012Every severe thunderstorm warning in 2012
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.