Abstract forward by David Novlan, Meteorologist NWS El Paso and Lance Tripoli Presentation by...

Abstract forward by David Novlan, Meteorologist NWS El Paso and Lance Tripoli

Presentation by MeteorologistsLance Tripoli and John Park,NWS El Paso

Tuesday December 8 2009

A strong upper trough, deep surface low and 150 knot jet streak combined to produce widespread sustained winds of 45 to 55 mph with gusts in the 70 to 80 mph range, especially in downslope areas and at higher elevations. Highest wind reported at El Paso International Airport was 56 mph from the southwest. Highest gust was clocked at 68 mph from the southwest. A few mountain passes had wind gusts of around 100 mph, with 116 mph recorded at St. Augustine pass just east of Las Cruces. Damage total area wide exceeded 10 million dollars.

Supporting the Nation’s commerce with information for safe, efficient, and environmentally sound transportation. 2

08/1955Z MODIS AQUA METSATImage of southern NM and far west TX


SPC 250mb analysis loop 07/12Z to 09/12Z


HPC SW US SFC analysis loop 8/00Z to 9/06Z


On the morning of December 8th, model forecasts identifieda classic Mountain Wave Signature(MWS) east of the Organ Mountains.

12 km NAM “Mountain Wave Signature”Mountain Wave Model

EPZ 12-8-09 12Z RAOB

500mb

700mb

9

D e c 8 2 0 0 9 0 2 Z - 1 6 Z a p p r x .l i n e a r d e s c e n t o f h i g h w i n d s

KDMN ASOS KELP ASOS


ELP UUA /OV ELP /TM 1755 /FL170 /TP C560 /SK OVC080-TOP130 /TB MOD-SEV /RM RINAL RWY 22

OCNL SEV TURBC BLW 150DUE TO STG LOW LVLWLY/SWLY WNDS AND CDFNTVALID 08/1010 – 08/1410CONDTS MOVG EWDAND CONTG BYD 1410Z

ELP UA /OV ELP /TM 1700 /FL100 /TP B737 /TB MOD /RM MOD DURD FL100 TO SURFACE

AIRMETS and SIGMETS issued by AWCearly on Dec 8 2009.


Potential Impacts on Flight Operations

TURBULENCE

CROSS-WIND LIMITATIONS

VISIBILITY – BLOWING DUST

WIND SHEAR

FOREIGN OBJECT DAMAGE (F.O.D.)


Lead Time for this advisory was 12 hours 16 minutes

WFO El Paso Airport Wind Advisory

Supporting the Nation’s commerce with information for safe, efficient, and environmentally sound transportation. 13 Use ELP photo here

Impacts on ELP operations R W Y 8 L “ X ” k n o c k e d o v e r b y

w in d .

RWY 8L “X” knocked over by wind.

T r u c k lo s t b e d c o v e r d u e to h ig h

w in d s

Truck lost bed cover due to high winds

W e s t p a t io lo c k e d d u e to h ig h

w in d s

West patio locked due to high winds

C o n t in u o u s F.O .D . s u r v e i l la n c e d u e to h ig h

w in d s

Continuous F.O.D. surveillance due to high winds

T r e e k n o c k e d o v e r b y w in d o n to p a r k e d

c a r

Tree knocked over by wind onto parked car

F a b r ic a t s e a s o n a l p a r k in g fe n c e to r n

d o w n

b e c a u s e o f h ig h w in d s .

Fabric at seasonal parking fence torn down because of high winds.

E s c o r t A lp h a S o u th w e s t o f f

p r o p e r ty ,

w o r k s to p p e d d u e to h ig h w in d s .

Escort Alpha Southwest off property, work stopped due to high winds.

T -H a n g a r U U 7 d o o r s b lo w n o f f

t r a c k .

T-Hangar UU7 doors blown off track.

A A – in b o u n d /o u tb o u n d f l ig h ts , C A L –

2 f l ig h ts c a n c e l le d , S W A – 9 f l ig h ts

c a n c e l le d .

AA – inbound/outbound flights, CAL – 2 flights cancelled, SWA – 9 flights cancelled.


Photo courtesy of Greg Lundeen

Photo courtesy of John Fausett

W id e s p r e a d d a m a g e r e p o r te d a c r o s s n o r th e a s t

E l P a s o . R o o fs p a r t ia l ly b lo w n o f f… tr e e s a n d

b r a n c h e s b lo w n d o w n . C a r w in d o w s b r o k e n

b y b lo w in g d e b r is .

Widespread damage reported across northeast El Paso. Roofs partially blown off…trees and branches blown down. Car windows broken by blowing debris.

T r a n s M o u n ta in r o a d c lo s e d d u e to

w in d s a n d s m a l l r o c k s b lo w in g .

Trans Mountain road closed due to winds and small rocks blowing.

7 9 m p h g u s t m e a s u r e d a t C h a p in H S in N E E l P a s o .

79 mph gust measured at Chapin HS in NE El Paso.

A w n in g / fa ls e s to r e f r o n t c o l la p s e d f r o m b u i ld in g

o n B u r r o S t r e e t . R e p o r ts o f t r e e s a n d p o w e r l in e s

d o w n . H o m e s d a m a g e d th r o u g h o u t C lo u d c r o f t

a r e a .

Awning/false store front collapsed from building on Burro Street. Reports of trees and power lines down. Homes damaged throughout Cloudcroft area.

R o o f d a m a g e a t W S M R p o l ic e s ta t io n .

Roof damage at WSMR police station.

8 3 m p h g u s t m e a s u r e d a t W h i te S a n d s

S p a c e H a r b o r.

83 mph gust measured at White Sands Space Harbor.

Impacts around the area

9 7 m p h g u s t m e a s u r e d 3 m i le s E S E o f O r g a n , N M

97 mph gust measured 3 miles ESE of Organ, NM

116 mph gust measured at San Augustin Pass


KELP ARRIVAL/DEPARTURE WIND CONSIDERATIONS


KEPZ - Windy city south

• 47 HIGH WIND EVENTS TOTAL• 28 TSTM – PEAK GUST 66 KTS• 19 – PEAK GUST KTS

• MAX WIND SINCE 1950 – KTS(MAR 10 1977 and MAR 26 2010)

• ≥30KTS…..AVERAGE 128 DAYS/YR • ≥30KTS…..20 DAYS NOV – JAN• ≥30KTS…..42 DAYS FEB – APR

• OUR LONGEST CONTINUOUS PERIODWITH PEAK WINDS ≥30KTS LASTED 8 DAYS

WIND EVENT STATISTICS JAN 1996 – MAR 2010

GRADIENT

73

73

(84 mph)


WFO EPZ Airport Wind Advisories: Issued when we expect either of the following criteria are expected to persist for 1 hour or more:

Sustained Winds 30 kts(34 mph) or greater

Sustained Winds 20 kts(23 mph) AND gust spread of at least 10 kts(11 mph)

Aviation Forecast Discussions : Routinely produced twice daily, and updated as needed for changing weather. Discussions address Low and High pressure systems, fronts, thunderstorms and their expected impacts on winds, ceilings and visibilities across southwest New Mexico and far west Texas.

Terminal Aerodrome Forecasts (TAFs) are produced 4 times daily at: 6 am MDT(5 am MST) and 12 pm MDT(11 am MST)

6 pm MDT(5 pm MDT) and 12 am MDT( 11 pm MST) for 4 airports in our County Warning Forecast Area (CWFA)

including:

• Truth Or Consequences Regional Airport (TCS)

• El Paso International Airport (ELP)

When time allows, we like to give ELP ATCT a courtesy ‘heads up’ call for weather expected to impact the airport within the next 2 hrs.

• Las Cruces International Airport (LRU)

• Deming Regional Airport (DMN)


Questions?

Just ask the weatherman

Thank you allfor your time today!

Abstract forward by David Novlan, Meteorologist NWS El Paso and Lance Tripoli Presentation by...

Documents

Transcript of Abstract forward by David Novlan, Meteorologist NWS El Paso and Lance Tripoli Presentation by...