Alert archive / Nebraska / Wind Chill Warnings in 2008

Wind Chill Warning 1, NWS North Platte, NE

December 14, 200821 counties in Nebraska

NWS North Platte, NE issued this wind chill warning at Dec 14, 2008, 2:48 PM MST for 21 counties in Nebraska. It was in force for 20 hr. 32 reports 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
Dec 14, 2008, 2:48 PM MST (21:48 UTC)
Expired
Dec 15, 2008, 11:00 AM MST
In force
20 hr
Issued by
NWS North Platte, NE
All 21 counties

Arthur County, NE, Blaine County, NE, Boyd County, NE, Brown County, NE, Cherry County, NE, Custer County, NE, Garden County, NE, Garfield County, NE, Grant County, NE, Holt County, NE, Hooker County, NE, Keith County, NE, Keya Paha County, NE, Lincoln County, NE, Logan County, NE, Loup County, NE, McPherson County, NE, Rock County, NE, Sheridan County, NE, Thomas County, NE, Wheeler County, NE

The radar

The North Platte radar (KLNX), 15 km from the middle of the area, began a volume at 22:03 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
Dec 14, 3:50 PM MSTEXTR WIND CHILL -32Ainsworth, NEWINDS SUSTAINED AT 31MPH WITH GUSTS TO 40MPH.
Dec 14, 3:52 PM MSTEXTR WIND CHILL -35Valentine, NEWINDS SUSTAINED AT 28MPH WITH GUSTS TO 38MPH.
Dec 14, 4:50 PM MSTEXTR WIND CHILL -33Thedford, NEWINDS SUSTAINED AT 23MPH WITH GUSTS TO 33MPH.
Dec 14, 4:50 PM MSTEXTR WIND CHILL -32Oneill, NEWINDS SUSTAINED AT 33MPH WITH GUSTS TO 40MPH.
Dec 14, 4:53 PM MSTEXTR WIND CHILL -35Valentine, NEWINDS SUSTAINED AT 25MPH WITH GUSTS TO 33MPH.
Dec 14, 6:50 PM MSTEXTR WIND CHILL -34Oneill, NEWINDS SUSTAINED AT 31MPH GUSTING TO 37MPH.
Dec 14, 6:50 PM MSTEXTR WIND CHILL -33Thedford, NEWINDS AT 18MPH GUSTING TO 28MPH.
Dec 14, 6:53 PM MSTEXTR WIND CHILL -36Valentine, NEWINDS SUSTAINED AT 24MPH GUSTING TO 33MPH.
Dec 14, 6:53 PM MSTEXTR WIND CHILL -35Ainsworth, NEWINDS SUSTAINED AT 26MPH GUSTING TO 35MPH.
Dec 14, 6:53 PM MSTEXTR WIND CHILL -31Broken Bow, NEWINDS SUSTAINED AT 23MPH WITH GUSTS TO 37MPH.
Dec 14, 7:50 PM MSTEXTR WIND CHILL -38Valentine, NEWINDS SUSTAINED AT 25MPH GUSTING TO 35MPH.
Dec 14, 7:50 PM MSTEXTR WIND CHILL -33Ainsworth, NEWINDS 23MPH GUSTING TO 31MPH.
Dec 14, 7:50 PM MSTEXTR WIND CHILL -33Thedford, NEWINDS 18 GUSTS 26MPH.
Dec 14, 7:50 PM MSTEXTR WIND CHILL -32Oneill, NEWINDS 25MPH GUSTING 35MPH.
Dec 14, 7:53 PM MSTEXTR WIND CHILL -33Broken Bow, NEWINDS 23MPH GUSTING 30MPH.
Dec 14, 8:30 PM MSTEXTR WIND CHILL -43Gordon, NEREPORT FROM NEBRASKA DEPARTMENT OF ROADS SITE.
Dec 14, 9:00 PM MSTEXTR WIND CHILL -39Whitman, NEREPORTED BY NEBRASKA DEPARTMENT OF ROADS SITE.
Dec 14, 10:30 PM MSTEXTR WIND CHILL -3614 S Thedford, NEREPORT FROM NEBRASKA DEPARTMENT OF ROADS SITE AT DISMAL RIVER HILL.
Dec 14, 11:00 PM MSTEXTR WIND CHILL -25Ogallala, NE
Dec 14, 11:53 PM MSTEXTR WIND CHILL -34Broken Bow, NE
Dec 15, 12:10 AM MSTEXTR WIND CHILL -38Oneill, NE
Dec 15, 12:52 AM MSTEXTR WIND CHILL -38Valentine, NE
Dec 15, 2:50 AM MSTEXTR WIND CHILL -38Ainsworth, NE
Dec 15, 5:00 AM MSTSNOW 0.3Valentine, NEWATER EQUIVALENT OF THE SNOWFALL IN THE PAST 24 HOURS WAS 0.01 OF AN INCH.
Dec 15, 5:00 AM MSTSNOW 1.1North Platte, NEWATER EQUIVALENT OF THE SNOWFALL IN THE PAST 24 HOURS WAS 0.05 OF AN INCH.
Dec 15, 6:00 AM MSTSNOW 110 Nne Brule, NEREPORT RECEIVED FROM AN NERAIN OBSERVER.
Dec 15, 6:00 AM MSTSNOW 12 Se Anselmo, NEWATER EQUIVALENT OF THE SNOWFALL WAS 0.09 OF AN INCH.
Dec 15, 6:00 AM MSTSNOW 1Kingsley Dam, NEWATER EQUIVALENT OF THE SNOWFALL IN THE PAST 24 HOURS WAS 0.12 OF AN INCH.
Dec 15, 6:53 AM MSTEXTR WIND CHILL -32North Platte, NE
Dec 15, 7:00 AM MSTSNOW 1Taylor, NEWATER EQUIVALENT OF THE SNOWFALL WAS 0.20 OF AN INCH IN THE PAST 24 HOURS.
Dec 15, 7:00 AM MSTSNOW 3.59 Ene Elsmere, NEWATER EQUIVALENT OF THE SNOWFALL WAS 0.25 OF AN INCH.
Dec 15, 7:30 AM MSTEXTR WIND CHILL -36Thedford, NE

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

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 12:00Z, 9.8 hours before the alert went out and 96 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, N. Platte/Lee Bi, NE at 12:00Z on 2008-12-14Temperature 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, N. Platte/Lee Bi, NE at 12:00Z on 2008-12-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 2 square meters per square second.1939587897117136Sfc1 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
855 m above ground
0-6 km bulk shear
46 kt
0-1 km storm-relative helicity
2 m²/s²
0-3 km storm-relative helicity
364 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WWUS43 KLBF 142148
WSWLBF

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE NORTH PLATTE NE
348 PM CST SUN DEC 14 2008

...ARCTIC AIR WILL PLUNGE SOUTH CREATING HAZARDS FOR THE REGION...

A REINFORCING SHOT OF ARCTIC AIR WILL ARRIVE THIS
EVENING...DROPPING TEMPERATURES TO WELL BELOW ZERO. BY MONDAY
MORNING...LOW TEMPERATURES WILL RANGE FROM 5 BELOW IN SOUTHERN
AREAS...TO AROUND 20 BELOW IN THE NORTH. THE BITTERLY COLD
TEMPERATURES WILL COMBINE WITH WINDS OF 10 TO 20 MPH...PRODUCING
WIND CHILLS OF 20 TO 40 BELOW ZERO. 


NEZ004>007-094-151000-
/O.CAN.KLBF.BZ.W.0001.000000T0000Z-081215T0000Z/
/O.UPG.KLBF.WC.Y.0004.081215T0000Z-081215T1800Z/
/O.NEW.KLBF.WC.W.0001.081214T2148Z-081215T1800Z/
SHERIDAN-EASTERN CHERRY-KEYA PAHA-BOYD-WESTERN CHERRY-
INCLUDING THE CITIES OF...GORDON...RUSHVILLE...VALENTINE...
SPRINGVIEW...SPENCER...CODY...MERRIMAN...KILGORE
348 PM CST SUN DEC 14 2008 /248 PM MST SUN DEC 14 2008/

...WIND CHILL WARNING IN EFFECT UNTIL 12 PM CST /11 AM MST/
MONDAY...
...BLIZZARD WARNING IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN NORTH PLATTE HAS ISSUED A WIND
CHILL WARNING...WHICH IS IN EFFECT UNTIL 12 PM CST /11 AM MST/
MONDAY. THE BLIZZARD WARNING HAS BEEN CANCELED AND THE WIND CHILL
ADVISORY IS NO LONGER IN EFFECT.

TEMPERATURES WILL FALL TO 10 TO 20 BELOW ZERO LATER TONIGHT AS A
REINFORCING SHOT OF ARCTIC AIR MOVES INTO WESTERN AND NORTH
CENTRAL NEBRASKA. NORTHERLY WINDS OF 10 TO 20 MPH...WILL COMBINE
WITH THE COLD TEMPERATURES...PRODUCING LIFE THREATENING WIND
CHILLS OF 30 BELOW TO 40 BELOW ZERO.

A WIND CHILL WARNING MEANS THE COMBINATION OF VERY COLD AIR AND
STRONG WINDS WILL CREATE DANGEROUSLY LOW WIND CHILL VALUES OF 30
BELOW ZERO OR COLDER. WIND CHILLS THIS COLD WILL RESULT IN FROST
BITE AND LEAD TO HYPOTHERMIA OR DEATH IF PRECAUTIONS ARE NOT
TAKEN. IF YOU MUST BE OUTSIDE...DRESS IN SEVERAL LAYERS AND COVER
ALL AREAS OF EXPOSED SKIN. 


$$

NEZ008>010-023>029-038-151000-
/O.CAN.KLBF.WW.Y.0011.000000T0000Z-081215T0000Z/
/O.UPG.KLBF.WC.Y.0004.081215T0000Z-081215T1800Z/
/O.NEW.KLBF.WC.W.0001.081214T2148Z-081215T1800Z/
BROWN-ROCK-HOLT-GRANT-HOOKER-THOMAS-BLAINE-LOUP-GARFIELD-WHEELER-
CUSTER-
INCLUDING THE CITIES OF...AINSWORTH...BASSETT...ONEILL...
HYANNIS...MULLEN...THEDFORD...DUNNING...TAYLOR...BURWELL...
BARTLETT...BROKEN BOW
348 PM CST SUN DEC 14 2008 /248 PM MST SUN DEC 14 2008/

...WIND CHILL WARNING IN EFFECT UNTIL 12 PM CST /11 AM MST/
MONDAY...
...WINTER WEATHER ADVISORY IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN NORTH PLATTE HAS ISSUED A WIND
CHILL WARNING...WHICH IS IN EFFECT UNTIL 12 PM CST /11 AM MST/
MONDAY. THE WINTER WEATHER ADVISORY HAS BEEN CANCELED. THE WIND
CHILL ADVISORY IS NO LONGER IN EFFECT. 

TEMPERATURES WILL FALL TO 10 TO 20 BELOW ZERO LATER TONIGHT AS A
REINFORCING SHOT OF ARCTIC AIR MOVES INTO WESTERN AND NORTH
CENTRAL NEBRASKA. NORTHERLY WINDS OF 10 TO 20 MPH...WILL COMBINE
WITH THE COLD TEMPERATURES...PRODUCING LIFE THREATENING WIND
CHILLS OF 30 BELOW TO 40 BELOW ZERO.

A WIND CHILL WARNING MEANS THE COMBINATION OF VERY COLD AIR AND
STRONG WINDS WILL CREATE DANGEROUSLY LOW WIND CHILL VALUES OF 30
BELOW ZERO OR COLDER. WIND CHILLS THIS COLD WILL RESULT IN FROST
BITE AND LEAD TO HYPOTHERMIA OR DEATH IF PRECAUTIONS ARE NOT
TAKEN. IF YOU MUST BE OUTSIDE...DRESS IN SEVERAL LAYERS AND COVER
ALL AREAS OF EXPOSED SKIN. 


$$

NEZ022-035>037-057-059-151000-
/O.CAN.KLBF.WW.Y.0011.000000T0000Z-081215T0000Z/
/O.NEW.KLBF.WC.W.0001.081214T2148Z-081215T1800Z/
GARDEN-ARTHUR-MCPHERSON-LOGAN-KEITH-LINCOLN-
INCLUDING THE CITIES OF...OSHKOSH...ARTHUR...TRYON...STAPLETON...
OGALLALA...NORTH PLATTE
348 PM CST SUN DEC 14 2008 /248 PM MST SUN DEC 14 2008/

...WIND CHILL WARNING IN EFFECT UNTIL 12 PM CST /11 AM MST/
MONDAY...
...WINTER WEATHER ADVISORY IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN NORTH PLATTE HAS ISSUED A WIND
CHILL WARNING...WHICH IS IN EFFECT UNTIL 12 PM CST /11 AM MST/
MONDAY. THE WINTER WEATHER ADVISORY HAS BEEN CANCELED. 

TEMPERATURES WILL FALL TO 10 TO 15 BELOW ZERO LATER TONIGHT AS A
REINFORCING SHOT OF ARCTIC AIR MOVES INTO WESTERN AND NORTH
CENTRAL NEBRASKA. NORTHERLY WINDS OF 10 TO 20 MPH...WILL COMBINE
WITH THE COLD TEMPERATURES...PRODUCING LIFE THREATENING WIND
CHILLS OF 25 BELOW TO 35 BELOW ZERO.

A WIND CHILL WARNING MEANS THE COMBINATION OF VERY COLD AIR AND
STRONG WINDS WILL CREATE DANGEROUSLY LOW WIND CHILL VALUES OF 30
BELOW ZERO OR COLDER. WIND CHILLS THIS COLD WILL RESULT IN FROST
BITE AND LEAD TO HYPOTHERMIA OR DEATH IF PRECAUTIONS ARE NOT
TAKEN. IF YOU MUST BE OUTSIDE...DRESS IN SEVERAL LAYERS AND COVER
ALL AREAS OF EXPOSED SKIN. 

$$

NEZ056-058-069>071-151000-
/O.CAN.KLBF.WW.Y.0011.000000T0000Z-081215T0000Z/
/O.NEW.KLBF.WC.Y.0005.081214T2148Z-081215T1800Z/
DEUEL-PERKINS-CHASE-HAYES-FRONTIER-
INCLUDING THE CITIES OF...CHAPPELL...BIG SPRINGS...GRANT...
IMPERIAL...HAYES CENTER...CURTIS...EUSTIS
348 PM CST SUN DEC 14 2008 /248 PM MST SUN DEC 14 2008/

...WIND CHILL ADVISORY IN EFFECT UNTIL 12 PM CST /11 AM MST/
MONDAY...
...WINTER WEATHER ADVISORY IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN NORTH PLATTE HAS ISSUED A WIND
CHILL ADVISORY...WHICH IS IN EFFECT UNTIL 12 PM CST /11 AM MST/
MONDAY. THE WINTER WEATHER ADVISORY HAS BEEN CANCELED. 

TEMPERATURES WILL FALL TO 5 TO 10 BELOW ZERO LATER TONIGHT AS A
REINFORCING SHOT OF ARCTIC AIR MOVES INTO WESTERN AND NORTH
CENTRAL NEBRASKA. NORTHERLY WINDS OF 10 TO 20 MPH...WILL COMBINE
WITH THE COLD TEMPERATURES...PRODUCING DANGEROUS WIND CHILLS OF
20 BELOW TO 30 BELOW ZERO.

A WIND CHILL ADVISORY MEANS THAT VERY COLD AIR AND STRONG WINDS
WILL COMBINE TO GENERATE WIND CHILLS OF 20 TO 30 BELOW ZERO. THIS WILL
RESULT IN FROST BITE AND LEAD TO HYPOTHERMIA IF PRECAUTIONS ARE
NOT TAKEN. IF YOU MUST VENTURE OUTDOORS...MAKE SURE YOU WEAR A HAT
AND GLOVES AND COVER AREAS OF EXPOSED SKIN.

$$

BUTTLER
1 follow-up statement
000 
WWUS43 KLBF 150928
WSWLBF

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE NORTH PLATTE NE
328 AM CST MON DEC 15 2008

...FRIGID WIND CHILL VALUES THIS MORNING...

SUBZERO TEMPERATURES WILL COMBINE WITH NORTHWEST WINDS TO KEEP
WIND CHILL VALUES AT 20 BELOW TO 35 BELOW ZERO THIS MORNING. THE
SURFACE RIDGE OF ARCTIC HIGH PRESSURE WILL EXTEND SOUTH SPREADING COLDER
AND DRIER AIR SOUTH EARLY.

NEZ004>010-022>029-035>038-057-059-094-151800-
/O.CON.KLBF.WC.W.0001.000000T0000Z-081215T1800Z/
SHERIDAN-EASTERN CHERRY-KEYA PAHA-BOYD-BROWN-ROCK-HOLT-GARDEN-
GRANT-HOOKER-THOMAS-BLAINE-LOUP-GARFIELD-WHEELER-ARTHUR-MCPHERSON-
LOGAN-CUSTER-KEITH-LINCOLN-WESTERN CHERRY-
INCLUDING THE CITIES OF...GORDON...RUSHVILLE...VALENTINE...
SPRINGVIEW...SPENCER...AINSWORTH...BASSETT...ONEILL...OSHKOSH...
HYANNIS...MULLEN...THEDFORD...DUNNING...TAYLOR...BURWELL...
BARTLETT...ARTHUR...TRYON...STAPLETON...BROKEN BOW...OGALLALA...
NORTH PLATTE...CODY...MERRIMAN...KILGORE
328 AM CST MON DEC 15 2008 /228 AM MST MON DEC 15 2008/

...WIND CHILL WARNING REMAINS IN EFFECT UNTIL NOON CST /11 AM
MST/ TODAY...

A WIND CHILL WARNING REMAINS IN EFFECT UNTIL NOON CST /11 AM MST/
TODAY. 

TEMPERATURES BETWEEN 9 BELOW TO 23 BELOW ZERO WILL COMBINE WITH
NORTHWEST WINDS TO PRODUCE LIFE THREATENING WIND CHILLS OF 25
BELOW TO 35 BELOW ZERO THIS MORNING. TEMPERATURES WILL BE SLOW TO
RECOVER EARLY ALTHOUGH WINDS WILL GRADUALLY DECREASE AS THE
SURFACE HIGH BUILDS SOUTH AND EAST TODAY.

A WIND CHILL WARNING MEANS THE COMBINATION OF VERY COLD AIR AND
STRONG WINDS WILL CREATE DANGEROUSLY LOW WIND CHILL VALUES OF
30 BELOW ZERO OR COLDER. WIND CHILLS THIS COLD WILL RESULT IN
FROST BITE AND LEAD TO HYPOTHERMIA OR DEATH IF PRECAUTIONS ARE
NOT TAKEN IN A MANNER OF MINUTES. IF YOU MUST BE OUTSIDE...DRESS IN
SEVERAL LAYERS AND COVER ALL AREAS OF EXPOSED SKIN.

$$

NEZ056-058-069>071-151800-
/O.CON.KLBF.WC.Y.0005.000000T0000Z-081215T1800Z/
DEUEL-PERKINS-CHASE-HAYES-FRONTIER-
INCLUDING THE CITIES OF...CHAPPELL...BIG SPRINGS...GRANT...
IMPERIAL...HAYES CENTER...CURTIS...EUSTIS
328 AM CST MON DEC 15 2008 /228 AM MST MON DEC 15 2008/

...WIND CHILL ADVISORY REMAINS IN EFFECT UNTIL NOON CST /11 AM
MST/ TODAY...

A WIND CHILL ADVISORY REMAINS IN EFFECT UNTIL NOON CST /11 AM
MST/ TODAY. 

TEMPERATURES BETWEEN 9 BELOW TO 15 BELOW ZERO WILL COMBINE WITH
NORTHWEST WINDS TO PRODUCE LIFE THREATENING WIND CHILLS OF 20 BELOW
TO 29 BELOW ZERO THIS MORNING. TEMPERATURES WILL BE SLOW TO
RECOVER EARLY ALTHOUGH WINDS WILL GRADUALLY DECREASE AS THE
SURFACE HIGH BUILDS SOUTH AND EAST TODAY.

A WIND CHILL ADVISORY MEANS THAT VERY COLD AIR AND STRONG WINDS
WILL COMBINE TO GENERATE WIND CHILLS OF 20 BELOW TO 29 BELOW
ZERO. THIS WILL RESULT IN FROST BITE AND LEAD TO HYPOTHERMIA IF
PRECAUTIONS ARE NOT TAKEN. IF YOU MUST VENTURE OUTDOORS...MAKE
SURE YOU WEAR A HAT AND GLOVES AND COVER AREAS OF EXPOSED SKIN.

$$

What forecasters said that day

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

NWS North Platte, NE wrote its last area forecast discussion before this wind chill warning went out at Dec 14, 2:15 PM MST, 33 minutes earlier.

Area forecast discussion, Dec 14, 2:15 PM MST, 33 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORTH PLATTE NE
315 PM CST SUN DEC 14 2008

...TEMPERATURES OVER THE NEXT 7 DAYS AND THE THREAT FOR
PRECIPITATION THROUGH THURSDAY NIGHT THE MAIN FORECASTING
CHALLENGES...

.SYNOPSIS...
WOW...WHAT A DIFFERENCE A DAY MAKES. TEMPERATURES AT 2 PM TDY ARE 50
DEGREES COLDER THAN YESTERDAYS READINGS THANKS TO AN ARCTIC COLD
FRONT AND BITTERLY COLD AIRMASS ACROSS THE PLAINS. TEMPERATURES OVER
THE PAST HOUR RANGED FROM 5 TO -5...WHILE CORRESPONDING WIND CHILLS
WERE RUNNING 20 TO 30 BELOW ZERO THIS AFTERNOON. HIGH PRESSURE OVER
MT AND LOW PRESSURE OVER THE TWIN CITIES CONTINUES TO DRIVE STRONG
NORTHERLY WINDS THIS AFTERNOON AND AM EXPECTING WINDS TO CONTINUE
WELL INTO THE NIGHTTIME HOURS...AT LEAST UNTIL THE HIGH PRESSURE
OVER MT BUILDS INTO THE NRN CWA OVERNIGHT TONIGHT.

.DISCUSSION...

NEAR TERM...TONIGHT THROUGH WEDNESDAY...MAIN FORECASTING CHALLENGES
DEAL WITH TEMPERATURES (WIND CHILLS) TONIGHT...THEN SNOW FALL
CHANCES AND ACCUMULATIONS FOR MONDAY NIGHT AND TUESDAY NIGHT AS A
COUPLE OF DISTURBANCES TRACK ACROSS THE CENTRAL PLAINS.

FOR TONIGHT...MAIN CHALLENGE LIES WITH TEMPERATURES...AND WIND
CHILLS. SNOWFALL SHOULD COME TO A QUICK END AROUND SUNSET AS
THE BACK EDGE OF THE UPPER LEVEL TROF LIFTS INTO THE DAKOTAS. HIGH
PRESSURE OVER NRN MT WILL BUILD SLOWLY SOUTHEAST TONIGHT ALLOWING
TEMPERATURES TO PLUMMET ANYWHERE FROM 5 BELOW IN THE FAR SOUTH TO 20
TO 25 BELOW IN THE NORTH. NORTHWESTERLY WINDS ARE EXPECTED TO
DIMINISH SOMEWHAT THIS EVENING...BUT STILL BE ABOVE THE 10 MPH
CRITERIA FOR WIND CHILL HIGHLIGHTS. GENERALLY FOLLOWED I80 AS A
DELINEATION LINE FOR A WIND CHILL WARNING (NORTH) FROM A WIND CHILL
ADVISORY (SOUTH). WILL CANCEL THE ONGOING WINTER PRODUCTS AS
VISIBILITIES HAVE IMPROVED OVER THE PAST COUPLE OF HOURS.

A COUPLE OF DISTURBANCES IMPACT WESTERN AND NORTH CENTRAL ON MONDAY
NIGHT/TUESDAY...THEN AGAIN ON TUESDAY NIGHT INTO WEDNESDAY.

TURNING TO TOMORROW NIGHT AND TUESDAY. BOTH THE NAM AND GFS
SOLUTIONS IN AGREEMENT TODAY...LIFTING A DECENT DISTURBANCE FROM
ARIZONA INTO THE CENTRAL PLAINS DURING THE PERIOD. THE MODELS ARE
INDICATING A STRONG AREA OF MID LEVEL FRONTOGENESIS ACROSS NRN
KS/SRN NEBRASKA LATE MONDAY NIGHT AND TUESDAY. HAVE RAMPED UP POPS
TO LIKELY IN MY SRN ZONES. HAVE TRENDED QPFS TOWARD HPC GUIDANCE
WHICH IS DRIER THAN THE GFS SOLUTION. UTILIZING THIS GUIDANCE AND A
15 TO 1 RATIO FOR SNOW...YIELDS 2 TO 3 INCHES IN MY SOUTHEASTERN
ZONES. PROBABLY NOT ENOUGH FOR AN ADVISORY ATTM AS WINDS SHOULDNT
BE A MAJOR ISSUE LIKE TODAY.

ANOTHER AREA OF STRONG MID LEVEL FRONTOGENESIS WILL INTERACT WITH A
DISTURBANCE AGAIN ON TUESDAY NIGHT INTO WEDNESDAY. THE GFS IS
BULLISH WITH THE QPF AND RESULTANT SNOWFALL ONCE AGAIN WHILE THE NAM
IS MUCH LESS OPTIMISTIC. IN LIGHT OF SOME DISAGREEMENT HERE...WILL
OPT FOR THE DRIER NAM SOLUTION AND KEEP FCST MENTION OF FLURRIES.

LONG TERM...WEDNESDAY NIGHT THROUGH SUNDAY...A COUPLE OF FORECASTING
CHALLENGES ARE NOTED IN THE EXTENDED PERIODS...THE FIRST IS THE
POTENTIAL WINTER STORM FOR WEDNESDAY NIGHT INTO THURSDAY...AND THE
SECOND IS AN ARCTIC FROPA AND ANOTHER SHOT OF BITTERLY COLD ARCTIC
FRIDAY/FRIDAY NIGHT.

TURNING TO THE MIDWEEK SYSTEM ON WEDNESDAY NIGHT...PERSISTENT SWRLY
FLOW ALOFT AND COLD ARCTIC DOME OF COLD AIR IN THE LWR LEVELS WILL
REMAIN IN PLACE THIS WEEK. THE RESULTANT PATTERN WILL FACILITATE
SEVERAL DISTURBANCES CROSSING THE CENTRAL AND SRN ROCKIES FROM
WEDNESDAY THROUGH SUNDAY. THE FIRST DISTURBANCE OF THE PERIOD WILL
ARRIVE WEDNESDAY NIGHT. BOTH THE EURO AND GFS SOLUTIONS TAP INTO
ABUNDANT GULF MOISTURE LOCATED ACROSS THE SRN PLAINS...WHICH WILL
RESULT IN A SIGNIFICANT PRECIPITATION AND WINTER WX MAKER ACROSS THE
CENTRAL PLAINS AND UPPER MIDWEST LATE WEDNESDAY NIGHT AND THURSDAY.
STORM TRACKS AS DEPICTED IN THE GFS AND EURO SOLUTIONS ARE STILL IN
DOUBT AS THE EURO SOLUTION IS FURTHER SOUTH COMPARED TO THE MORE NRN
GFS SOLUTION. GENERAL CONSENSUS WITH SURROUNDING OFFICES AND NATL
GUIDANCE AT THIS JUNCTURE...FAVORS THE EURO SOLUTION MID WEEK. WITH
THIS IN MIND...RAMPED UP POPS FOR WEDNESDAY NIGHT AND THURSDAY. HAVE
KEPT PRECIPITATION TYPE ALL SNOW RIGHT NOW DUE TO THE SRN FAVORED
TRACK OF THE EURO SOLUTION. IF THIS TRACK TRENDS FURTHER
NORTHWARD...WE MAY HAVE TO ENTERTAIN THE THOUGHT OF SOME FREEZING
PRECIPITATION WEDNESDAY EVENING IN THE SOUTH AND ERN AREAS.

FINALLY...ANOTHER ARCTIC FRONT WITH BITTERLY COLD AIR IS EXPECTED
LATER IN THE WEEK. SOME TIMING DIFFERENCES EXIST PASSING THE FRONT
THROUGH THE CWA EITHER FRIDAY OR FRIDAY NIGHT. NO DOUBT...SOME LIGHT
SNOW OR FLURRIES WILL ACCOMPANY PASSAGE OF THE FRONT. HOWEVER IN
LIGHT OF THE ACTIVE PATTERN WITH PRECIPITATION POSSIBLE
TODAY...MONDAY NIGHT...TUESDAY NIGHT AND WEDNESDAY NIGHT...WILL KEEP
THE FCST DRY AND GO WITH A SILENT 14 POP FOR NOW.

&&

.AVIATION...
-SN SHOULD COME TO AN END AT BOTH THE KLBF AT KVTN TAF SITES BY 00Z
MON. AFTER 00Z EXPECT CEILINGS BKN TO OVC AT 030 TO 035 WITH VSBY
P6SM...SO VFR EXPECTED TO BE THE RULE. WINDS WILL GRADUALLY DIMINISH
AT BOTH KLBF AND KVTN AS SURFACE HIGH PRESSURE BUILDS IN. NORTHWEST
WINDS AT 15 TO 25 KTS UNTIL 06Z...THEN NORTHWEST 10 TO 15 KTS AFTER
06Z.

.LBF WATCHES/WARNINGS/ADVISORIES...
WIND CHILL WARNING FROM 4 PM CST (3 PM MST) THROUGH NOON CST (11 PM
MST) MONDAY FOR ZONES NEZ004>010-094-022>029-035>038-057-059.

WIND CHILL ADVISORY FROM 4 PM CST (3 PM MST) THROUGH NOON CST (11 PM
MST) MONDAY FOR ZONES NEZ056-058-069>071.

.SHORT AND LONG TERM...BUTTLER

.AVIATION...TAYLOR
Hazardous weather outlook, Dec 14, 2:13 PM MST, 35 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE NORTH PLATTE NE
313 PM CST SUN DEC 14 2008

NEZ004>010-022>029-035>038-056>059-069>071-094-152115-
SHERIDAN-EASTERN CHERRY-KEYA PAHA-BOYD-BROWN-ROCK-HOLT-GARDEN-
GRANT-HOOKER-THOMAS-BLAINE-LOUP-GARFIELD-WHEELER-ARTHUR-MCPHERSON-
LOGAN-CUSTER-DEUEL-KEITH-PERKINS-LINCOLN-CHASE-HAYES-FRONTIER-
WESTERN CHERRY-
313 PM CST SUN DEC 14 2008 /213 PM MST SUN DEC 14 2008/

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF WESTERN AND
NORTH CENTRAL NEBRASKA.

.DAY ONE...TONIGHT.
GUSTY NORTH WINDS WILL CREATE DANGEROUSLY COLD WIND CHILLS IN THE 25
TO 35 BELOW ZERO RANGE. ANYONE NEEDING TO BE OUTDOORS SHOULD TAKE
THE APPROPRIATE STEPS TO PROTECT THEMSELVES FROM THE DANGEROUS
COLD WEATHER.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY.
NORTHWEST WINDS WILL CONTINUE INTO MONDAY MORNING...CREATING DANGEROUS
WIND CHILLS. SNOW WILL DEVELOP ONCE AGAIN MONDAY NIGHT...AND
CONTINUE INTO TUESDAY. SNOWFALL OF 1 TO 3 INCHES APPEARS POSSIBLE
SOUTHEAST OF A LINE FROM SPRINGVIEW IN KEYA PAHA COUNTY...TO
OSHKOSH IN GARDEN COUNTY. ACCUMULATIONS OF AN INCH OR LESS ARE EXPECTED
NORTHWEST OF THIS LINE. A STRONGER SYSTEM MAY BRING A MORE
SIGNIFICANT SNOWFALL LATE WEDNESDAY AND THURSDAY. RESIDENTS OF
WESTERN AND NORTH CENTRAL NEBRASKA SHOULD STAY TUNED FOR FURTHER
UPDATES REGARDING THE POTENTIAL FOR SNOWFALL THIS WEEK.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NEEDED THROUGH TONIGHT.

&&

THIS PRODUCT IS NOW AVAILABLE...ALONG WITH OTHER WEATHER...
HYDROLOGICAL AND CLIMATOLOGICAL INFORMATION...AT
HTTP://WWW.WEATHER.GOV/NORTHPLATTE

TAYLOR

In the hours before

Local storm report, Dec 14, 11:20 AM MST, 3 hours 28 minutes before
PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE NORTH PLATTE NE
1220 PM CST SUN DEC 14 2008

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1003 PM     NON-TSTM WND GST VALENTINE               42.87N 100.55W
12/13/2008  M62.00 MPH       CHERRY             NE   ASOS

1147 PM     NON-TSTM WND GST NORTH PLATTE            41.13N 100.77W
12/13/2008  M48.00 MPH       LINCOLN            NE   AWOS

1157 PM     NON-TSTM WND GST IMPERIAL                40.52N 101.64W
12/13/2008  M47.00 MPH       CHASE              NE   ASOS

1208 AM     SNOW             AINSWORTH               42.55N 99.86W
12/14/2008  E2.0 INCH        BROWN              NE   CO-OP OBSERVER

            COOP OBSERVER ESTIMATED ONE TO TWO INCHES OF SNOWFALL.

1216 AM     NON-TSTM WND GST ELLSWORTH               42.06N 102.29W
12/14/2008  M48.00 MPH       SHERIDAN           NE   DEPT OF HIGHWAYS

1218 AM     NON-TSTM WND GST RUSHVILLE               42.71N 102.47W
12/14/2008  M51.00 MPH       SHERIDAN           NE   DEPT OF HIGHWAYS

1224 AM     NON-TSTM WND GST SUTHERLAND              41.16N 101.13W
12/14/2008  M47.00 MPH       LINCOLN            NE   DEPT OF HIGHWAYS

1230 AM     NON-TSTM WND GST ONEILL                  42.46N 98.65W
12/14/2008  M48.00 MPH       HOLT               NE   AWOS

1240 AM     NON-TSTM WND GST OSHKOSH                 41.41N 102.34W
12/14/2008  M45.00 MPH       GARDEN             NE   MESONET

            REPORTED BY UNION PACIFIC RAILROAD SITE.

1246 AM     NON-TSTM WND GST GORDON                  42.81N 102.20W
12/14/2008  M65.00 MPH       SHERIDAN           NE   DEPT OF HIGHWAYS

0127 AM     NON-TSTM WND GST ROSE                    42.17N 99.53W
12/14/2008  M52.00 MPH       ROCK               NE   DEPT OF HIGHWAYS

0130 AM     NON-TSTM WND GST CHAPPELL                41.09N 102.47W
12/14/2008  M43.00 MPH       DEUEL              NE   MESONET

            REPORTED BY UNION PACIFIC RAILROAD SITE.

0130 AM     NON-TSTM WND GST OGALLALA                41.13N 101.72W
12/14/2008  M48.00 MPH       KEITH              NE   AWOS

0237 AM     NON-TSTM WND GST IMPERIAL                40.52N 101.64W
12/14/2008  M51.00 MPH       CHASE              NE   ASOS

0245 AM     NON-TSTM WND GST NORTH PLATTE            41.13N 100.77W
12/14/2008  M47.00 MPH       LINCOLN            NE   ASOS

0245 AM     NON-TSTM WND GST VALENTINE               42.87N 100.55W
12/14/2008  M53.00 MPH       CHERRY             NE   ASOS

0448 AM     NON-TSTM WND GST BROKEN BOW              41.41N 99.64W
12/14/2008  M61.00 MPH       CUSTER             NE   ASOS

0450 AM     NON-TSTM WND GST THEDFORD                41.98N 100.57W
12/14/2008  M49.00 MPH       THOMAS             NE   AWOS

0600 AM     SNOW             BUTTE                   42.91N 98.85W
12/14/2008  M1.7 INCH        BOYD               NE   CO-OP OBSERVER

            WATER CONTENT OF THE SNOWFALL WAS 0.15 OF AN INCH.

0627 AM     NON-TSTM WND GST 14 S THEDFORD           41.78N 100.57W
12/14/2008  M53.00 MPH       THOMAS             NE   DEPT OF HIGHWAYS

            WIND GUST RECORDED AT NEDOR SITE LOCATED AT
            DUNNING/MIDDLE LOUP BRIDGE.

0646 AM     NON-TSTM WND GST BROWNLEE                42.29N 100.62W
12/14/2008  M50.00 MPH       CHERRY             NE   DEPT OF HIGHWAYS

0710 AM     NON-TSTM WND GST AINSWORTH               42.55N 99.86W
12/14/2008  M43.00 MPH       BROWN              NE   ASOS

0710 AM     EXTR WIND CHILL  OGALLALA                41.13N 101.72W
12/14/2008  M-22.00 F        KEITH              NE   AWOS

0750 AM     EXTR WIND CHILL  THEDFORD                41.98N 100.57W
12/14/2008  M-29.00 F        THOMAS             NE   AWOS

0750 AM     EXTR WIND CHILL  ONEILL                  42.46N 98.65W
12/14/2008  M-28.00 F        HOLT               NE   AWOS

0759 AM     EXTR WIND CHILL  IMPERIAL                40.52N 101.64W
12/14/2008  M-20.00 F        CHASE              NE   ASOS

0759 AM     EXTR WIND CHILL  BROKEN BOW              41.41N 99.64W
12/14/2008  M-27.00 F        CUSTER             NE   ASOS

0800 AM     SNOW             9 ENE ELSMERE           42.21N 100.02W
12/14/2008  M3.0 INCH        BROWN              NE   CO-OP OBSERVER

            VISIBILITY AT TIME OF OBSERVATION WAS ONE HALF MILE IN
            SNOW AND BLOWING SNOW.

0810 AM     EXTR WIND CHILL  AINSWORTH               42.55N 99.86W
12/14/2008  M-30.00 F        BROWN              NE   AWOS

0813 AM     EXTR WIND CHILL  VALENTINE               42.87N 100.55W
12/14/2008  M-35.00 F        CHERRY             NE   ASOS

0816 AM     EXTR WIND CHILL  NORTH PLATTE            41.13N 100.77W
12/14/2008  M-25.00 F        LINCOLN            NE   ASOS

0816 AM     EXTR WIND CHILL  IMPERIAL                40.52N 101.64W
12/14/2008  M-25.00 F        CHASE              NE   ASOS

0820 AM     SNOW             2 SE ANSELMO            41.60N 99.84W
12/14/2008  M1.0 INCH        CUSTER             NE   CO-OP OBSERVER

0848 AM     EXTR WIND CHILL  BROKEN BOW              41.41N 99.64W
12/14/2008  M-30.00 F        CUSTER             NE   ASOS

0853 AM     EXTR WIND CHILL  NORTH PLATTE            41.13N 100.77W
12/14/2008  M-27.00 F        LINCOLN            NE   ASOS

0855 AM     EXTR WIND CHILL  VALENTINE               42.87N 100.55W
12/14/2008  M-36.00 F        CHERRY             NE   ASOS

0900 AM     SNOW             11 SW AMELIA            42.12N 99.11W
12/14/2008  M1.0 INCH        HOLT               NE   CO-OP OBSERVER

            SWAN LAKE COOP OBSERVER REPORTED VISIBILITIES NEAR ZERO
            AT TIME OF OBSERVATION IN BLOWING AND DRIFTING SNOW.

0900 AM     SNOW             10 NE OSHKOSH           41.51N 102.21W
12/14/2008  M0.9 INCH        GARDEN             NE   CO-OP OBSERVER

0953 AM     EXTR WIND CHILL  IMPERIAL                40.52N 101.64W
12/14/2008  M-25.00 F        CHASE              NE   ASOS

1008 AM     EXTR WIND CHILL  VALENTINE               42.87N 100.55W
12/14/2008  M-39.00 F        CHERRY             NE   ASOS

1010 AM     EXTR WIND CHILL  OGALLALA                41.13N 101.72W
12/14/2008  M-25.00 F        KEITH              NE   AWOS

1024 AM     EXTR WIND CHILL  BROKEN BOW              41.41N 99.64W
12/14/2008  M-31.00 F        CUSTER             NE   ASOS

1050 AM     EXTR WIND CHILL  THEDFORD                41.98N 100.57W
12/14/2008  M-36.00 F        THOMAS             NE   AWOS

1050 AM     EXTR WIND CHILL  AINSWORTH               42.55N 99.86W
12/14/2008  M-34.00 F        BROWN              NE   AWOS

1110 AM     EXTR WIND CHILL  NORTH PLATTE            41.13N 100.77W
12/14/2008  M-28.00 F        LINCOLN            NE   ASOS

1110 AM     EXTR WIND CHILL  ONEILL                  42.46N 98.65W
12/14/2008  M-31.00 F        HOLT               NE   AWOS

1145 AM     SNOW             THEDFORD                41.98N 100.57W
12/14/2008  E2.0 INCH        THOMAS             NE   LAW ENFORCEMENT

            SHERIFF ESTIMATED 1 TO 2 INCHES OF SNOWFALL WITH BLOWING
            AND DRIFTING SNOW CONTINUING.

1150 AM     SNOW             NORTH PLATTE            41.13N 100.77W
12/14/2008  M0.8 INCH        LINCOLN            NE   OFFICIAL NWS OBS

            WATER EQUIVALENT OF THE SNOWFALL WAS 0.03 OF AN INCH.

1150 AM     SNOW             VALENTINE               42.87N 100.55W
12/14/2008  M0.7 INCH        CHERRY             NE   CO-OP OBSERVER

            WATER EQUIVALENT OF THE SNOWFALL WAS 0.03 OF AN INCH.

1155 AM     SNOW             9 ENE ELSMERE           42.21N 100.02W
12/14/2008  M3.0 INCH        BROWN              NE   CO-OP OBSERVER

1208 PM     SNOW             AINSWORTH               42.55N 99.86W
12/14/2008  E2.0 INCH        BROWN              NE   CO-OP OBSERVER

            COOP OBSERVER ESTIMATED ONE TO TWO INCHES OF SNOWFALL.

1210 PM     SNOW             2 W AMELIA              42.23N 99.00W
12/14/2008  E2.0 INCH        HOLT               NE   CO-OP OBSERVER

            COOP OBSERVER ESTIMATED ONE TO TWO INCHES OF SNOWFALL IN
            BLOWING AND DRIFTING SNOW.

1217 PM     SNOW             LYNCH                   42.83N 98.47W
12/14/2008  E4.0 INCH        BOYD               NE   CO-OP OBSERVER

            COOP OBSERVER ESTIMATED 3 TO 4 INCHES OF SNOWFALL WITH
            BLOWING AND DRIFTING SNOW.

&&

SJC
Local storm report, Dec 14, 1:48 PM MST, 1 hour before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
248 PM CST SUN DEC 14 2008

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0150 PM     EXTR WIND CHILL  AINSWORTH               42.55N 99.86W
12/14/2008  M-31 F           BROWN              NE   AWOS

            WINDS SUSTAINED AT 30 MPH WITH GUSTS TO 38 MPH.

&&

MBYRD
Local storm report, Dec 14, 1:50 PM MST, 58 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
250 PM CST SUN DEC 14 2008

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0153 PM     EXTR WIND CHILL  BROKEN BOW              41.41N 99.64W
12/14/2008  M-28 F           CUSTER             NE   ASOS

            WINDS SUSTAINED AT 28 MPH WITH GUSTS TO 36 MPH.

&&

MBYRD
Local storm report, Dec 14, 1:51 PM MST, 57 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
251 PM CST SUN DEC 14 2008

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0150 PM     EXTR WIND CHILL  THEDFORD                41.98N 100.57W
12/14/2008  M-32 F           THOMAS             NE   AWOS

            WINDS SUSTAINED AT 33MPH WITH GUSTS TO 43MPH.

&&

MBYRD
Local storm report, Dec 14, 1:53 PM MST, 55 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
253 PM CST SUN DEC 14 2008

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0153 PM     EXTR WIND CHILL  VALENTINE               42.87N 100.55W
12/14/2008  M-31 F           CHERRY             NE   ASOS

            WINDS SUSTAINED AT 26 MPH WITH GUSTS TO 39MPH.

&&

MBYRD
Local storm report, Dec 14, 2:39 PM MST, 9 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
339 PM CST SUN DEC 14 2008

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0200 PM     NON-TSTM WND GST THEDFORD                41.98N 100.57W
12/14/2008  M53 MPH          THOMAS             NE   DEPT OF HIGHWAYS

&&

MBYRD

The office that day

Everything else NWS North Platte, NE issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Dec 14, 2:57 AM MSTWind Chill AdvisoryLBFBlaine, Boyd, Brown, Cherry, Custer, Garfield and 9 more12 hr
Dec 14, 2:48 PM MSTWind Chill AdvisoryLBFChase, Deuel, Frontier, Hayes, Perkins20 hr

Nearby

Wind Chill Warnings in Nebraska, 2008Every wind chill warning in 2008

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.