special weather briefing

8/3/2019 Special Weather Briefing

1/11

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Major Winter Storm to Deliver

One, Two Punch Late WeekNWS Albuquerque

November 30, 2011


2/11

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Major Winter Storm to Impact

Much of New Mexico


3/11

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Storm-at-a-GlanceThursday

Powerful cold front plows into the NE early, remainder ofthe area Thursday Night.

Major gap wind event develops Thursday afternoon

Thursday Night - Friday

Strong, potentially damaging gap wind event along the

Central Valley corridor Thu Night, diminishing Friday Mainly light snow east slopes Central Mountain Chain, NE

Highlands/Raton Ridge as front moves south

Friday Night Saturday Night

Widespread, potentially significant snow expected across

parts of western NM and along/east of the CentralMountain Chain, including the I-40 Corridor and I-25 fromGlorieta Pass northward

Bands of heavy snow likely on the EC and NE Plains


4/11

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Current Conditions100 PM MST Wednesday 29 November

Strengthening upper

level low is currently

positioned near theGreat Basin

Mild and dry in New

Mexico with afternoontemperatures 5 to 15

degrees above average


5/11

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Forecast Chart:Thursday 6 PM

This is a classic

pattern for significant

winter weather

across New Mexicowith a slow-moving,

closed upper level

low to our west and a

strong back door cold

front at the surface.


6/11

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Strong, Potentially Damaging Gap WindsThursday PM Friday AM

> Strong, potentially

damaging wind gusts of

60+ mph along and

immediately west of the

Central Mountain Chain.

These winds may be of

the overtop variety, and

will not be limited toareas west of gaps.

> Developing Thursday

afternoon, peaking

Thursday Night.

> Including: Santa Fe

area, Middle and Lower

Rio Grande Valley as well

as Upper Tularosa Basin

(Carrizozo)Valid Thursday Evening


7/11

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Impact of Gap Winds/High Winds on Travel

Look for strong winds to develop initially through the gaps and into

the central valley but then increase in areal extent due to theovertopping nature of this event.


8/11

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Upper Level Forecast Chart

(Image is Moisture)

Upper Level Storm Track: Fri-Sat

Track of the potent upper low from AZ Friday, across centralNM Saturday into Saturday Evening. Widespread

precipitation expected within the dashed lines Friday Nightinto Saturday.


9/11

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Projected Event Total Snowfall:Main Impact Window Friday Night-Saturday

Very High

High

ModerateLow

POTENTIAL FOR SIGNIFICANT SNOWFALL

Potential for SignificantImpacts to Interstate Travel


10/11

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Hazards & Impact Summary

Significant Gap Wind Event Thu PM Friday

o Strong, potentially damaging winds Rio GrandeValley, Upper Tularosa Basin

Widespread snow, heavy at times, Friday Night intoSaturday

o Significant impacts to travel expected initiallyacross much of western NM and then along/eastof the Central Mountain Chain

o Bands of heavy snow likely across much of theEC/NE Plains


11/11

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