Alert archive / Alaska / High Wind Warnings in 2023

High Wind Warning 4, NWS Juneau, AK

March 10, 2023Juneau City and Borough, Alaska

NWS Juneau, AK issued this high wind warning at Mar 10, 2023, 3:44 AM AKST for Juneau City and Borough, Alaska. It took effect at Mar 10, 2023, 6:00 AM AKST. It was in force for 27 hr. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
Mar 10, 2023, 3:44 AM AKST (12:44 UTC)
In effect from
Mar 10, 2023, 6:00 AM AKST
Expired
Mar 11, 2023, 9:00 AM AKST
In force
27 hr
Issued by
NWS Juneau, AK

County Juneau City and Borough, AK

The radar

The Sitka radar (PACG), 188 km from the middle of the area, began a volume at 12:49 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.

What was reported inside it

TimeReportWhereRemark
Mar 11, 12:02 AM AKSTNON-TSTM WND GST 74Juneau, AKSTATION JMLA2 REPORTED A GUST OF 64 KT DURING A STILL ONGOING TAKU WIND EVENT.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Yakutat, (PYAK), launched 12:00Z, 0.7 hours before the alert went out and 326 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, Yakutat, at 12:00Z on 2023-03-10Temperature 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 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Yakutat, at 12:00Z on 2023-03-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 47 square meters per square second.1939Sfc1 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
1500 m above ground
0-6 km bulk shear
20 kt
0-1 km storm-relative helicity
47 m²/s²
0-3 km storm-relative helicity
145 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

511 
WWAK77 PAJK 101244
NPWAJK

URGENT - WEATHER MESSAGE
National Weather Service Juneau AK
344 AM AKST Fri Mar 10 2023

AKZ325-102045-
/O.NEW.PAJK.HW.W.0004.230310T1500Z-230311T1800Z/
City and Borough of Juneau-
Including the city of Juneau
344 AM AKST Fri Mar 10 2023

...HIGH WIND WARNING IN EFFECT FROM 6 AM THIS MORNING TO 9 AM
AKST SATURDAY...

* WHAT...North to northeast winds 35 mph with gusts of 60 to 70 
  mph expected.

* WHERE...Downtown Juneau and Douglas.

* WHEN...From 6 AM this morning to 9 AM AKST Saturday.

* IMPACTS...Travel will be difficult, especially for high profile
  vehicles. Damaging winds will blow around loose debris and may
  blow down trees and power lines.

* ADDITIONAL DETAILS...Taku winds will increase through Friday 
  morning. Marmion Island at the southern tip of Douglas Island 
  has already measured peak gusts in excess of 80 mph.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A high wind warning means a hazardous high wind event is expected
or occurring.

&&

$$

For more information from the National Weather Service visit
https://weather.gov/ajk
4 follow-up statements
873 
WWAK77 PAJK 102027
NPWAJK

URGENT - WEATHER MESSAGE
National Weather Service Juneau AK
1127 AM AKST Fri Mar 10 2023

AKZ325-110430-
/O.CON.PAJK.HW.W.0004.000000T0000Z-230311T1800Z/
City and Borough of Juneau-
Including the city of Juneau
1127 AM AKST Fri Mar 10 2023

...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 9 AM AKST SATURDAY...

* WHAT...North to northeast winds 35 mph with gusts of 60 to 70 
  mph expected.

* WHERE...Downtown Juneau and Douglas.

* WHEN...Until 9 AM AKST Saturday.

* IMPACTS...Travel will be difficult, especially for high 
  profile vehicles. Damaging winds will blow around loose debris 
  and may blow down trees and power lines.

* ADDITIONAL DETAILS...Taku winds will persist through tonight. 
  Marmion Island at the southern tip of Douglas Island has already
  measured peak gusts in excess of 80 mph.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A high wind warning means a hazardous high wind event is expected
or occurring.

&&

$$

For more information from the National Weather Service visit
https://weather.gov/ajk
172 
WWAK77 PAJK 110423
NPWAJK

URGENT - WEATHER MESSAGE
National Weather Service Juneau AK
723 PM AKST Fri Mar 10 2023

AKZ325-111430-
/O.CON.PAJK.HW.W.0004.000000T0000Z-230311T1800Z/
City and Borough of Juneau-
Including the city of Juneau
723 PM AKST Fri Mar 10 2023

...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 9 AM AKST SATURDAY...

* WHAT...North to northeast winds 35 mph with gusts of 60 to 70 
  mph expected.

* WHERE...Downtown Juneau and Douglas.

* WHEN...Until 9 AM AKST Saturday.

* IMPACTS...Travel will be difficult, especially for high 
  profile vehicles. Damaging winds will blow around loose debris 
  and may blow down trees and power lines.

* ADDITIONAL DETAILS...Generally, the winds have diminished 
  during the afternoon and evening hours. Winds are expected to 
  increase through the overnight hours, again. There is still some
  uncertainty as to whether a true Taku wind event will develop, 
  reaching high wind criteria, again tonight.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A high wind warning means a hazardous high wind event is expected
or occurring.

&&

$$

For more information from the National Weather Service visit
https://weather.gov/ajk
698 
WWAK77 PAJK 111100
NPWAJK

URGENT - WEATHER MESSAGE
National Weather Service Juneau AK
200 AM AKST Sat Mar 11 2023

AKZ325-111800-
/O.CON.PAJK.HW.W.0004.000000T0000Z-230311T1800Z/
City and Borough of Juneau-
Including the city of Juneau
200 AM AKST Sat Mar 11 2023

...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 9 AM AKST THIS
MORNING...

* WHAT...North to northeast winds 35 mph with gusts of 60 to 75 
  mph expected.

* WHERE...Downtown Juneau and Douglas.

* WHEN...Until 9 AM AKST Saturday.

* IMPACTS...Travel will be difficult, especially for high 
  profile vehicles. Damaging winds will blow around loose debris 
  and may blow down trees and power lines.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

A high wind warning means a hazardous high wind event is expected
or occurring.

&&

$$

For more information from the National Weather Service visit
https://weather.gov/ajk
348 
WWAK77 PAJK 111754
NPWAJK

URGENT - WEATHER MESSAGE
National Weather Service Juneau AK
854 AM AKST Sat Mar 11 2023

AKZ325-111900-
/O.EXP.PAJK.HW.W.0004.000000T0000Z-230311T1800Z/
City and Borough of Juneau-
Including the city of Juneau
854 AM AKST Sat Mar 11 2023

...HIGH WIND WARNING WILL EXPIRE AT 9 AM AKST THIS MORNING...

Frequent gusts to 60 mph or greater are no longer expected in
downtown Juneau and Douglas. Winds 15 to 25 mph with gusts to 40 
mph will continue.

$$

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

What forecasters said that day

The local office's own words before this high wind warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Juneau, AK wrote its last area forecast discussion before this high wind warning went out at Mar 9, 2:36 PM AKST, 13 hours 8 minutes earlier.

Area forecast discussion, Mar 9, 2:36 PM AKST, 13 hours 8 minutes before
Southeast Alaska Forecast Discussion
National Weather Service Juneau AK
236 PM AKST Thu Mar 9 2023

.SHORT TERM...Relatively clear and cold weather will continue
Friday for the panhandle as outflow continues, intensifying
through the day tomorrow as high pressure builds again in the
Yukon. Strong winds are expected tonight in areas such as downtown
Juneau and Skagway ahead of overall stronger winds once again
building in the inner channels. Gales are also expected to build
in the coastal waters Friday as the outflow winds ramp up Friday.
A small moisture deprived trough will continue to slide southward
just off of the SE gulf coast Friday morning, potentially bringing
some thin cloud cover and flurries as it passes.

As the days get longer heading into Spring many parts of the
panhandle continue to see increasing diurnal trends in temperature.
Most areas saw slightly higher maximum temperatures this
afternoon but are still expected to drop significantly overnight
again, especially in the inner channels sheltered from outflow
winds and continued minimal to no cloud cover. With minimal
features to track and no significant changes made, forecaster
confidence is above average for this time period.

.LONG TERM.../Saturday through Thursday/...Cold and breezy
weather will transition by next week with decreasing outflow
winds, an increase in temperatures, and higher chances for snow
and rain. The AK Gulf high pressure ridge shifted west as an upper
low dropped from the Yukon into the SE AK Gulf by Saturday.
Sunday night into Monday we begin the pattern shift as first mid
level trough drops southward from the AK interior into the AK
Gulf. This is followed by a broader trough which should become a
closed upper levels low centered more over the Western Gulf
Wednesday into Thursday. Beyond that time frame high uncertainty
on synoptic pattern.

Still keeping an eye for Taku wind event into Saturday but flow
should be more northerly v northeasterly, inversion is not very
strong, and not much of a critical level. Some chance for precip
hitting the southern areas as a surface low develops over Haida
Gwaii, most likely snow or a snow-rain mix, but accumulations
expected to be very light. As the upper level trough moves in
surface lows will start to track over the gulf in from the west. For
the start of the week the first in the series will be more to the
west, keeping the Panhandle dry but still cold with northerly winds.
Tuesday night into Wednesday the next low and associated front
positions over the NE Gulf as the front starts to cross over the
Panhandle. Due to cold air in place and low 850 mb temps watching
for accumulating snow. Right now models have the NE Gulf coast
getting highest QPF amounts and thus higher snow accumulation than
the rest of the region. Still bit early to nail down amounts but at
least a few inches for most locations. Southern areas get the warm
up sooner so will see more of a snow-rain mix. Used a blend of NAM
initially then GFS/ECMWF blend for the start of the week.

&&

.AVIATION...The biggest aviation hazard for Southeast Alaska
Thursday night and into Friday. Gusty winds have persisted in the
Skagway area through the day, and outflow winds are expected to
increase over the Icy Strait Corridor east to Juneau and
northward. Winds Friday out of the Stikine River Valley will
become gusty. Turbulence near rough terrain and ridges/hills with
some areas of Low-Level wind shear are possible, I think mainly
for the larger airports of Skagway, Haines, and Juneau, with
smaller ones of Hoonah, Elfin Cove, Pelican, and Gustavus airport
may also see similar issues.

&&

.AJK WATCHES/WARNINGS/ADVISORIES...
PUBLIC...Strong Wind from Friday morning through Friday afternoon for
     AKZ318.
     Gale Warning from 6 AM to 6 PM AKST Friday for AKZ322.
     Strong Wind from 9 PM AKST this evening through Friday afternoon
     for AKZ325.
MARINE...Gale Warning for PKZ012-013-643-644-651-663-664-671.
     Small Craft Advisory for PKZ011-022-031-053-642-652-661-662-672.

&&

SHORT TERM...STJ
LONG TERM....PRB
AVIATION...Bezenek

Visit us at http://www.weather.gov/Juneau

The office that day

Everything else NWS Juneau, AK issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Mar 9, 3:01 PM AKSTGale WarningAJK60 hr
Mar 9, 3:01 PM AKSTGale WarningAJK71 hr
Mar 9, 3:01 PM AKSTSmall Craft AdvisoryAJK71 hr
Mar 10, 3:48 AM AKSTGale WarningAJK24 hr
Mar 10, 4:05 AM AKSTSmall Craft AdvisoryAJK47 hr
Mar 10, 4:09 AM AKSTGale WarningAJK47 hr
Mar 10, 4:09 AM AKSTSmall Craft AdvisoryAJK47 hr

Nearby

High Wind Warnings in Alaska, 2023Every high wind warning in 2023

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.