Alert archive / Arizona / Wind Advisories in 2019

Wind Advisory 21, NWS Flagstaff, AZ

October 29, 2019Apache County, Navajo County, Arizona

NWS Flagstaff, AZ issued this wind advisory at Oct 29, 2019, 3:36 AM MST for Apache County, Navajo County, Arizona. It took effect at Oct 29, 2019, 9:00 AM MST. It was in force for 11 hr.

The area

The counties it named.

The facts

Issued
Oct 29, 2019, 3:36 AM MST (10:36 UTC)
In effect from
Oct 29, 2019, 9:00 AM MST
Expired
Oct 29, 2019, 8:00 PM MST
In force
11 hr
Issued by
NWS Flagstaff, AZ

Counties Apache County, AZ, Navajo County, AZ

The radar

The Flagstaff radar (KFSX), 149 km from the middle of the area, began a volume at 10:36 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, 10.6 hours before the alert went out and 173 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-pSkew-T log-p diagram, Flgstf/Belemont, AZ at 00:00Z on 2019-10-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Flgstf/Belemont, AZ at 00:00Z on 2019-10-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 5 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
3166 m above ground
0-6 km bulk shear
52 kt
0-1 km storm-relative helicity
5 m²/s²
0-3 km storm-relative helicity
44 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

386 
WWUS75 KFGZ 291036
NPWFGZ

URGENT - WEATHER MESSAGE
National Weather Service Flagstaff AZ
336 AM MST Tue Oct 29 2019

AZZ014-017-300300-
/O.NEW.KFGZ.WI.Y.0021.191029T1600Z-191030T0300Z/
Little Colorado River Valley in Apache County-White Mountains-
Including the cities of St. Johns, Springerville, Show Low, 
Greer, and Pinetop
336 AM MST Tue Oct 29 2019

...WIND ADVISORY IN EFFECT FROM 9 AM THIS MORNING TO 8 PM MST
THIS EVENING...

* WHAT...Southwest winds 20 to 30 mph with gusts up to 55 mph 
  expected.

* WHERE...Northeast of the White Mountains including the Little
  Colorado River valley of Apache County

* WHEN...From 9 AM this morning to 8 PM MST this evening.

* IMPACTS...Gusty winds could blow around unsecured objects. In 
  addition, winds this strong can make driving difficult, 
  especially for high profile vehicles.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Use extra caution when driving, especially if operating a high
profile vehicle. Secure outdoor objects.

&&

$$

For more information from the National Weather Service visit
https://weather.gov/flagstaff
1 follow-up statement
540 
WWUS75 KFGZ 300248
NPWFGZ

URGENT - WEATHER MESSAGE
National Weather Service Flagstaff AZ
748 PM MST Tue Oct 29 2019

AZZ014-017-300400-
/O.EXP.KFGZ.WI.Y.0021.000000T0000Z-191030T0300Z/
Little Colorado River Valley in Apache County-White Mountains-
Including the cities of St. Johns, Springerville, Show Low, 
Greer, and Pinetop
748 PM MST Tue Oct 29 2019

...WIND ADVISORY WILL EXPIRE AT 8 PM MST THIS EVENING...

Wind speeds have largely decreased below advisory thresholds this
evening and the Wind Advisory will be allowed to expire. However,
breezy winds will persist overnight with gusts up to 30 mph as a
cold front moves through the state.

$$

For more information from the National Weather Service visit
https://weather.gov/flagstaff

The office that day

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

IssuedProductOfficeCountiesLasted
Oct 29, 3:35 AM MSTRed Flag WarningFGZApache, Coconino, Navajo14 hr

Nearby

Wind Advisories in Arizona, 2019Every wind advisory 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.