Alert archive / Arizona / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 1, NWS Flagstaff, AZ
NWS Flagstaff, AZ issued this severe thunderstorm warning at May 15, 2021, 2:03 PM MST for Apache County, Navajo County, Arizona. It was in force for 27 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
- May 15, 2021, 2:03 PM MST (21:03 UTC)
- Expired
- May 15, 2021, 2:30 PM MST
- In force
- 27 min
- Issued by
- NWS Flagstaff, AZ
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Apache County, AZ, Navajo County, AZ
The radar
The Flagstaff radar (KFSX), 196 km from the middle of the area, began a volume at 21:04 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, 9.1 hours before the alert went out and 189 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 2788 m above ground
- 0-6 km bulk shear
- 16 kt
- 0-1 km storm-relative helicity
- 33 m²/s²
- 0-3 km storm-relative helicity
- 104 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
142
WUUS55 KFGZ 152103
SVRFGZ
AZC001-017-152130-
/O.NEW.KFGZ.SV.W.0001.210515T2103Z-210515T2130Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Flagstaff AZ
303 PM MDT Sat May 15 2021
The National Weather Service in Flagstaff has issued a
* Severe Thunderstorm Warning for...
Apache County in northeastern Arizona...
Navajo County in north central Arizona...
* Until 330 PM MDT.
* At 302 PM MDT, a severe thunderstorm was located near Low Mountain,
or 14 miles northeast of Keams Canyon, moving northeast at 30 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
* This severe thunderstorm will be near...
Salina around 320 PM MDT.
Tselani-Cottonwood around 325 PM MDT.
Blue Gap Chapter House around 330 PM MDT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3586 11002 3597 11005 3617 11005 3617 10971
3596 10976
TIME...MOT...LOC 2102Z 212DEG 24KT 3596 11000
HAIL...<.75IN
WIND...60MPH
$$1 follow-up statement
056
WWUS55 KFGZ 152128
SVSFGZ
Severe Weather Statement
National Weather Service Flagstaff AZ
328 PM MDT Sat May 15 2021
AZC001-017-152135-
/O.EXP.KFGZ.SV.W.0001.000000T0000Z-210515T2130Z/
Apache-Navajo-
328 PM MDT Sat May 15 2021
...THE SEVERE THUNDERSTORM WARNING FOR APACHE AND NAVAJO COUNTIES
WILL EXPIRE AT 330 PM MDT...
The severe thunderstorm near Salina and Cottonwood, in Apache
county, has weakened below severe limits, and no longer poses an
immediate threat to life or property. Therefore, the warning will be
allowed to expire. Gusty winds to 45 mph and light showers remain
possible in this area until 4 PM MDT.
LAT...LON 3586 11002 3597 11005 3617 11005 3617 10971
3596 10976
TIME...MOT...LOC 2125Z 212DEG 24KT 3607 10992
$$Nearby
Severe Thunderstorm Warnings in Arizona, 2021Every severe thunderstorm warning in 2021
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.