Severe Thunderstorm Warning 334, NWS Albuquerque, NM

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE ALBUQUERQUE NM
1154 AM MDT TUE OCT 20 2015

.AVIATION...
18Z TAF CYCLE
A SLOPPY AND UNSETTLED WEATHER PATTERN WILL IMPACT MOST OF
NORTHERN AND CENTRAL NEW MEXICO THROUGH AT LEAST THE NEXT 24 TO
36 HOURS AS A LOW PRESSURE SYSTEM INCHES CLOSER. SCATTERED SHOWERS
AND THUNDERSTORMS WILL PERIODICALLY DEVELOP THROUGH THE EARLY
EVENING WITH HEFTY DOWNPOURS...LARGE HAIL...AND GUSTY DOWNBURST
WINDS ACCOMPANYING. PRECIPITATION IS EXPECTED TO INCREASE IN
COVERAGE WITH MANY LOCATIONS OBSERVING MORE PERSISTENT TO EVEN
FREQUENT PASSAGES OF INDIVIDUAL SHOWERS AND STORMS. LOOK FOR
OCCASIONAL TO PERIODIC CEILING/VISIBILITY REDUCTIONS IN DOWNPOURS
WITH BATCHES OF PATCHY FOG AND MOUNTAIN OBSCURATIONS. SNOW LEVELS
WILL GENERALLY STAY ABOVE 10000 TO 11000 FEET THROUGH TONIGHT.

52

&&

.PREV DISCUSSION...345 AM MDT TUE OCT 20 2015...
.SYNOPSIS...
A STRONG UPPER LEVEL LOW PRESSURE SYSTEM DEVELOPING OVER THE
NORTHERN SEA OF CORTEZ TODAY WILL TRACK SLOWLY NORTHEASTWARD
ACROSS NORTHWEST NEW MEXICO THROUGH THURSDAY...BEFORE EJECTING
FURTHER NORTHEASTWARD ACROSS THE CENTRAL ROCKIES THURSDAY NIGHT.
BETWEEN TODAY AND THURSDAY NIGHT THE ENTIRE FORECAST CAN EXPECT
WETTING PRECIPITATION WITH HEAVIER AMOUNTS AROUND AND OVER AN INCH
ACROSS SOUTHERN AND EASTERN AREAS. SOME AREAS EAST OF THE CENTRAL
MOUNTAIN CHAIN MAY RECEIVE OVER 3 INCHES OF RAIN WITH THE
POTENTIAL FOR FLASH FLOODING STARTING TODAY. STRONG ATMOSPHERIC
DYNAMICS AND INSTABILITY WILL ALSO PRODUCE THE RISK OF SEVERE
THUNDERSTORMS. A SECONDARY UPPER LEVEL TROUGH MAY MOVE OVER THE
AREA FROM THE NORTHWEST FRIDAY AND FRIDAY NIGHT KEEPING
PRECIPITATION IN THE FORECAST. THE HIGHEST ELEVATIONS OF THE
NORTHERN MOUNTAINS MAY RECEIVE SIGNIFICANT SNOW ACCUMULATION
THROUGH MID WEEK.

&&

.DISCUSSION...
WITH A PWAT ANOMALY +3 STANDARD DEVIATIONS ABOVE NORMAL THIS STORM
SYSTEM WILL HAVE ABUNDANT MOISTURE TO WORK WITH. THERE LOOKS TO BE
A SECONDARY RISK OF LOCALLY HEAVY RAIN TODAY OVER THE S CENTRAL
AND SW ZONES...BUT EASTERN AREAS WILL HAVE THE GREATER CONCERN
WHERE TRAINING CELLS LOOK INCREASINGLY LIKELY. WILL HOIST A FLASH
FLOOD WATCH VALID TODAY AND TONIGHT ALONG AND SE OF A LINE FROM
RUIDOSO TO TUCUMCARI...WHERE MODELS AGREE ON BETTER DYNAMICS
LINING UP AS S WINDS ALOFT OVER RIDE A PERSISTENT TAP OF MOISTURE
RICH SOUTHEASTERLY LOW LEVEL INFLOW TO THE SYSTEM. THE FLASH FLOOD
THREAT LOOKS TO CONTINUE THROUGH AT LEAST WEDNESDAY AS THE SYSTEM
DRAWS A BACK DOOR COLD FRONT INTO NE AND E CENTRAL AREAS.

THE FRIDAY AND FRIDAY NIGHT TROUGH DOESNT LOOK NEARLY AS WET...AND
IT SHOULD BE FOLLOWED BY A FETCH OF DRIER ZONAL FLOW.

44

&&

.FIRE WEATHER...
AN EXTENDED PERIOD OF UNSETTLED WEATHER WILL CONTINUE INTO THURSDAY
AS A LARGE STORM SYSTEM PUMPS ABUNDANT MOISTURE AND INSTABILITY OVER
NEW MEXICO. WIDESPREAD HEAVY RAIN OVER THE NEXT 3 DAYS WILL CENTER
OVER CENTRAL AND EASTERN AREAS...WITH FLASH FLOODING POSSIBLE MAINLY
ALONG AND EAST OF THE PECOS RIVER. MIN RH VALUES TODAY INTO THURSDAY
WILL AVERAGE FROM NEAR 40 PCT ALONG THE AZ STATE LINE TO NEAR 80 PCT
IN THE EAST...WHILE RECOVERIES FAVOR EXCELLENT ALL AREAS. NO STRONG
WINDS APPEAR TO ACCOMPANY THIS STORM SYSTEM EXCEPT FOR A PERIOD OF
GAP WINDS BELOW CANYONS IN THE RIO GRANDE VALLEY WEDNESDAY MORNING
THEN AGAIN THURSDAY MORNING.

VENTILATION WILL BE GOOD TO EXCELLENT TODAY BUT DETERIORATE THROUGH
THURSDAY UNTIL FAVORING WIDESPREAD POOR TO FAIR VALUES THROUGH THE
WEEKEND.

TEMPERATURES WILL BECOME COLD ENOUGH WEDNESDAY NIGHT FOR SOME LIGHT
TO MODERATE SNOW ACCUMULATIONS ABOVE 11000 FT IN THE NORTHERN MTS.
ANY IMPACTS WILL BE MINIMAL AND RELEGATED TO THE HIGHEST ELEVATIONS.
THIS MAY THE FIRST EVENT TO LEAVE A PERMANENT BLANKET OF SNOW COVER
IN THE HIGH TERRAIN.

THE MAIN STORM SYSTEM WILL EXIT THE STATE LATE THURSDAY AND LEAVE
BEHIND SOME MODERATE WESTERLY FLOW. LOCAL STRONG WEST WINDS ALONG
THE EAST SLOPES ARE POSSIBLE INTO FRIDAY MORNING. COLD ADVECTION IS
WEAK BEHIND THIS SYSTEM FOR LATE OCTOBER. ANOTHER WEAK WAVE IN THE
FLOW PATTERN WILL ALLOW FOR SOME ADDITIONAL COOLING WITH MORE RAIN
AND HIGH ELEVATION SNOW SHOWERS FRIDAY. MAX TEMPS WILL REMAIN NEAR
NORMAL HOWEVER LOWS CONTINUE 5 TO 10 DEGREES ABOVE AVERAGE. NO REAL
WIDESPREAD FREEZES APPEAR ON THE HORIZON FOR LOWER ELEVATION AREAS
THROUGH AT LEAST EARLY NEXT WEEK.

43

&&

.AVIATION...
06Z TAF CYCLE
ISOLATED SHRA AND TSRA WILL STILL BE A POSSIBILITY ACROSS THE FCST
AREA INTO THE PREDAWN HOURS OF TUE AND PERHAPS EVEN AWHILE AFTER
DAWN...BUT CHANCES TOO LOW AT ANY TAF SITE TO EVEN MENTION VCSH OR
VCTS IN THIS TIME PERIOD. BETWEEN 09Z AND 16Z TUE ACROSS EAST
CENTRAL AND SE NM...ESPECIALLY NEAR AND EAST OF THE PECOS
RIVER...SOME PATCHY IFR AND EVEN LIFR CEILINGS/VISIBILITIES WILL
BE POSSIBLE WITH GREATEST CHANCE AT ROW. SOME SPOTTY MT
OBSCURATIONS ARE ALSO POSSIBLE THROUGH THE MORN HOURS. TUE AFTN
AND EVE WILL FEATURE SCT SHRA AND TSRA...SOME OF THE LATTER QUITE
STRONG TO PERHAPS SEVERE...BREAKING OUT ACROSS MUCH OF THE
STATE... LIKELY MOST NUMEROUS ACROSS WEST...SOUTH AND PERHAPS EAST
CENTRAL NM. STRONGEST TSRA WILL BE CAPABLE OF PRODUCING VERY HEAVY
DOWNPOURS...HAIL...AND GUSTY DOWNBURST WINDS AS HIGH AS 60
KTS...BUT MOST WILL PRODUCE GUSTS BETWEEN 30 AND 45 KTS. STRONGEST
STORMS ALSO WILL PRODUCE BRIEF MVFR CIGS AND VSBY AS WELL AS MT
OBSCURATIONS.

43

&&

.ABQ WATCHES/WARNINGS/ADVISORIES...
FLASH FLOOD WATCH THROUGH LATE TONIGHT FOR THE FOLLOWING ZONES...
NMZ526-534>540.

&&

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE ALBUQUERQUE NM
554 AM MDT TUE OCT 20 2015

NMZ501>540-211200-
NORTHWEST PLATEAU-CHUSKA MOUNTAINS-FAR NORTHWEST HIGHLANDS-
NORTHWEST HIGHLANDS-WEST CENTRAL PLATEAU-WEST CENTRAL MOUNTAINS-
WEST CENTRAL HIGHLANDS-SOUTHWEST MOUNTAINS-
SAN FRANCISCO RIVER VALLEY-SAN JUAN MOUNTAINS-JEMEZ MOUNTAINS-
WEST SLOPES SANGRE DE CRISTO MOUNTAINS-
NORTHERN SANGRE DE CRISTOS ABOVE 9500 FEET/RED RIVER-
SOUTHERN SANGRE DE CRISTOS ABOVE 9500 FEET-
EAST SLOPES SANGRE DE CRISTO MOUNTAINS-UPPER RIO GRANDE VALLEY-
LOWER CHAMA RIVER VALLEY-SANTA FE METRO AREA-
MIDDLE RIO GRANDE VALLEY/ALBUQUERQUE METRO AREA-
LOWER RIO GRANDE VALLEY-SANDIA/MANZANO MOUNTAINS-ESTANCIA VALLEY-
CENTRAL HIGHLANDS-SOUTH CENTRAL HIGHLANDS-UPPER TULAROSA VALLEY-
SOUTH CENTRAL MOUNTAINS-RATON RIDGE/JOHNSON MESA-
FAR NORTHEAST HIGHLANDS-NORTHEAST HIGHLANDS-UNION COUNTY-
HARDING COUNTY-EASTERN SAN MIGUEL COUNTY-GUADALUPE COUNTY-
QUAY COUNTY-CURRY COUNTY-ROOSEVELT COUNTY-DE BACA COUNTY-
CHAVES COUNTY PLAINS-EASTERN LINCOLN COUNTY-SOUTHWEST CHAVES COUNTY-
554 AM MDT TUE OCT 20 2015

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTH AND CENTRAL
NEW MEXICO.

.DAY ONE...TODAY AND TONIGHT

THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS TODAY AND TONIGHT
ALONG AND SOUTH OF INTERSTATE 40...WHERE LARGE HAIL AND DAMAGING
WINDS ARE ARE POSSIBLE. IN ADDITION...THE POTENTIAL EXISTS FOR
HEAVY RAIN AND FLASH FLOODING ALONG AND SOUTHEAST A LINE FROM
RUIDOSO TO TUCUMCARI TODAY AND TONIGHT.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

A POTENT UPPER LEVEL LOW PRESSURE SYSTEM WILL TRACK NORTHEASTWARD
ACROSS NORTHWEST NEW MEXICO THURSDAY BEFORE EJECTING NORTHEASTWARD
THROUGH THE CENTRAL ROCKIES THURSDAY NIGHT AND FRIDAY. ABUNDANT
MOISTURE AND STRONG INSTABILITY WILL CAUSE THE POTENTIAL FOR
ISOLATED SEVERE THUNDERSTORMS TO PERSIST ACROSS PORTIONS OF THE
FORECAST AREA...AS WELL AS THE RISK FOR FLASH FLOODING TO PERSIST
ALONG AND E OF THE CENTRAL MT CHAIN THROUGH MID WEEK.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE REQUIRED TODAY AND TONIGHT ALONG AND
SOUTH OF I-40...EXCEPT IN CIBOLA COUNTY...DUE TO THE POTENTIAL FOR
SEVERE THUNDERSTORMS WITH STRONG HAIL AND DAMAGING WINDS.

44

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PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ALBUQUERQUE NM
1141 AM MDT TUE OCT 20 2015

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

1113 AM     HAIL             GLENWOOD                33.32N 108.88W
10/20/2015  M1.00 INCH       CATRON             NM   TRAINED SPOTTER

&&

EVENT NUMBER ABQ1502429

CML

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ALBUQUERQUE NM
1143 AM MDT TUE OCT 20 2015

NMZ505-508-201815-
WEST CENTRAL PLATEAU-SOUTHWEST MOUNTAINS-
1143 AM MDT TUE OCT 20 2015

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN CATRON COUNTY UNTIL
1215 PM MDT...

AT 1143 AM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM NEAR RED HILL...OR 25 MILES EAST OF
SPRINGERVILLE...MOVING NORTHEAST AT 30 MPH.

PENNY SIZE HAIL AND WIND GUSTS UP TO 50 MPH WILL BE POSSIBLE WITH
THIS STORM.

HEAVY RAIN WILL ALSO BE POSSIBLE WITH THIS STORM.

LOCATIONS IMPACTED INCLUDE...
SALT LAKE AND RED HILL.

THIS STORM MAY INTENSIFY...SO BE CERTAIN TO MONITOR YOUR PREFERRED
MEDIA OUTLETS AND NOAA WEATHER RADIO...FOR ADDITIONAL INFORMATION AND
POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE.

&&

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 800 PM MDT FOR
WEST CENTRAL NEW MEXICO.

LAT...LON 3413 10883 3426 10900 3461 10879 3446 10845
TIME...MOT...LOC 1743Z 214DEG 28KT 3427 10886

34

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ALBUQUERQUE NM
1147 AM MDT TUE OCT 20 2015

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

1110 AM     HAIL             PLEASANTON              33.27N 108.87W
10/20/2015  M1.00 INCH       CATRON             NM   TRAINED SPOTTER

&&

EVENT NUMBER ABQ1502430

CML

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ALBUQUERQUE NM
1149 AM MDT TUE OCT 20 2015

NMZ508-509-201815-
SOUTHWEST MOUNTAINS-SAN FRANCISCO RIVER VALLEY-
1149 AM MDT TUE OCT 20 2015

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN CATRON COUNTY UNTIL
1215 PM MDT...

AT 1147 AM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
TWO STRONG THUNDERSTORMS...ONE 10 MILES SOUTHEAST OF SAN FRANCISCO
PLAZA...OR 10 MILES SOUTHEAST OF RESERVE...MOVING NORTHEAST AT 40
MPH...WITH A SECOND STRONG THUNDERSTORM SOUTH OF MOGOLLON WITH
SIMILAR MOVEMENT.

HALF INCH HAIL AND WIND GUSTS UP TO 50 MPH WILL BE POSSIBLE WITH
THESE STORMS.

LOCATIONS IMPACTED INCLUDE...
RESERVE...SAN FRANCISCO PLAZA...MOGOLLON...ARAGON...CRUZVILLE AND
APACHE CREEK.

&&

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 800 PM MDT FOR
WEST CENTRAL NEW MEXICO.

LAT...LON 3329 10874 3346 10892 3395 10866 3377 10827
TIME...MOT...LOC 1747Z 210DEG 33KT 3357 10867

KJ

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ALBUQUERQUE NM
1152 AM MDT TUE OCT 20 2015

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

0724 PM     HAIL             9 W ROSWELL             33.38N 104.69W
10/19/2015  M1.00 INCH       CHAVES             NM   TRAINED SPOTTER

&&

EVENT NUMBER ABQ1502431

CML