Alert archive / Arizona / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 2, NWS Flagstaff, AZ

July 14, 2012Yavapai County, Arizona

NWS Flagstaff, AZ issued this severe thunderstorm warning at Jul 14, 2012, 2:58 PM MST for Yavapai County, Arizona. It was in force for 34 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: Jul 14, 2012, 2:58 PM MST (21:58 UTC)
Expired: Jul 14, 2012, 3:32 PM MST
In force: 34 min
Issued by: NWS Flagstaff, AZ
Area: Storm-based polygon

County Yavapai County, AZ

The radar

The Flagstaff radar (KFSX), 143 km from the middle of the area, began a volume at 21:59 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 12:00Z, 10.0 hours before the alert went out and 119 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 69 J/kg
Mixed-layer CIN: -26 J/kg
Mixed-layer LCL: 715 m above ground
0-6 km bulk shear: 22 kt
0-1 km storm-relative helicity: 107 m²/s²
0-3 km storm-relative helicity: 195 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

575 
WUUS55 KFGZ 142158
SVRFGZ
AZC025-142245-
/O.NEW.KFGZ.SV.W.0002.120714T2158Z-120714T2245Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE FLAGSTAFF AZ
258 PM MST SAT JUL 14 2012

THE NATIONAL WEATHER SERVICE IN FLAGSTAFF HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CENTRAL YAVAPAI COUNTY IN WEST CENTRAL ARIZONA...

* UNTIL 345 PM MST

* AT 253 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL.  THIS
  STORM WAS LOCATED NEAR KIRKLAND...OR 20 MILES SOUTHWEST OF
  PRESCOTT...AND MOVING NORTHEAST AT 10 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  SKULL VALLEY BY 335 PM MST...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS THUNDERSTORM IS ALSO PRODUCING HEAVY RAINFALL. THIS RAINFALL
WILL LEAD TO RAPID RISES ON AREA STREAMS AND CREEKS.

&&

LAT...LON 3463 11282 3452 11253 3433 11270 3440 11290
TIME...MOT...LOC 2158Z 204DEG 7KT 3445 11276

$$

DJO

1 follow-up statement

758 
WWUS55 KFGZ 142232
SVSFGZ

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE FLAGSTAFF AZ
332 PM MST SAT JUL 14 2012

AZC025-142242-
/O.CAN.KFGZ.SV.W.0002.000000T0000Z-120714T2245Z/
YAVAPAI AZ-
332 PM MST SAT JUL 14 2012

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL YAVAPAI COUNTY IS
CANCELLED...

THE SEVERE THUNDERSTORM WHICH PROMPTED THE WARNING HAS WEAKENED.
HOWEVER THE STORM IS STILL PRODUCING HEAVY RAIN WHICH MAY CAUSE LOCAL
RISES ON AREA CREEKS AND STREAMS.

LAT...LON 3463 11282 3452 11253 3433 11270 3440 11290
TIME...MOT...LOC 2232Z 204DEG 7KT 3451 11273

$$

MCS

The office that day

Everything else NWS Flagstaff, AZ issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 14, 7:05 AM MST	Flash Flood Warning	FGZ	Yavapai	3 hr
Jul 14, 10:51 AM MST	Areal Flood Advisory	FGZ	Yavapai	4 hr
Jul 14, 1:14 PM MST	Areal Flood Advisory	FGZ	Yavapai	3 hr
Jul 14, 2:02 PM MST	Severe Thunderstorm Warning	FGZ	Yavapai	28 min
Jul 14, 2:15 PM MST	Flash Flood Warning	FGZ	Coconino	2 hr
Jul 14, 2:44 PM MST	Areal Flood Advisory	FGZ	Yavapai	4 hr
Jul 14, 3:26 PM MST	Areal Flood Advisory	FGZ	Coconino	2 hr
Jul 14, 3:35 PM MST	Special Weather Statement	FGZ	Yavapai	40 min
Jul 14, 3:54 PM MST	Flash Flood Warning	FGZ	Yavapai	4 hr

Nearby

Severe Thunderstorm Warnings in Arizona, 2012 Every 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.