Area Forecast Discussion
Issued by NWS Albuquerque, NM

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000
FXUS65 KABQ 262355 AAA
AFDABQ

AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE ALBUQUERQUE NM
555 PM MDT TUE AUG 26 2014

.AVIATION...
00Z TAF CYCLE
CLOSED UPPER LOW OVER ERN NV THIS EVENING. THE SW FLOW AHEAD OF
THIS FEATURE CONTINUES TO BRING A MONSOON MOISTURE PLUME UP
THROUGH NM. SCT-NMRS SHOWERS AND THUNDERSTORMS WILL CONTINUE THIS
EVENING AND OVERNIGHT AS UPPER LOW MOVES INTO CNTL UT ANS SWLY JET
MOVES OVR CENTRAL AND NRN NM. MT TOPS WILL OCNLY BE OBSCD. MAIN
UNCERTAINTY REMAINS WHETHER OR NOT CIGS WILL LOWER TO MVFR AT
KFMN...KGUP...KABQ AND KSAF. LEFT OUT OF TAFS FOR NOW AS
CONFIDENCE REMAINS TOO LOW. ELSEWHERE...VFR CIGS WILL PREVAIL.

33

&&

.PREV DISCUSSION...313 PM MDT TUE AUG 26 2014...
.SYNOPSIS...
THE WEATHER PATTERN HAS TURNED INTO A WET ONE OVER NEW MEXICO AS A
ROBUST SURGE OF SUBTROPICAL MOISTURE HAS BEEN DRAWN INTO THE
STATE. NUMEROUS SHOWERS AND THUNDERSTORMS WILL CONTINUE TO IMPACT
A LARGE MAJORITY OF NORTHERN AND CENTRAL NEW MEXICO THROUGH
TONIGHT WITH THE POTENTIAL FOR LOCALLY HEAVY RAINFALL AND FLASH
FLOODING. BY WEDNESDAY A DEEPENING LOW PRESSURE SYSTEM WILL MOVE
OUT OF UTAH AND INTO COLORADO. AS DRIER AIR ARRIVES FROM THE
WEST...THIS WILL STEER THE BEST CHANCES FOR PRECIPITATION INTO
SOUTH CENTRAL AND EASTERN SECTIONS OF NEW MEXICO BY WEDNESDAY
AFTERNOON. TEMPERATURES WILL RISE A FEW DEGREES ON WEDNESDAY...BUT
WILL STILL FALL SHORT OF AVERAGE IN MUCH OF CENTRAL TO WESTERN NEW
MEXICO. A FRONT WILL THEN ENTER NORTHEASTERN NEW MEXICO ON
THURSDAY WHERE ONLY SLIGHTLY COOLER TEMPERATURES WILL BE FOUND
WITH LINGERING SHOWERS AND THUNDERSTORMS. THE WEATHER WILL THEN
TEND TO BE DRIER AS THE LONG HOLIDAY WEEKEND APPROACHES.

&&

.DISCUSSION...
A WIDESPREAD AND HIGH-EFFICIENCY RAINFALL EVENT IS CURRENTLY
UNDERWAY OVER NEW MEXICO. HURRICANE MARIE CONTINUES TO SPIN OVER
THE EASTERN PACIFIC...POSING NO DIRECT IMPACT TO NM...BUT THE
DRIVING FEATURES FOR NM ARE THE EXPANSIVE HIGH OVER THE MS RIVER
VALLEY AND THE DEEPENING UPPER LOW OVER NV. THE END RESULT IS
DEEP SUBTROPICAL MOISTURE STREAMING NORTHWARD INTO NM.

THE CROP OF STORMS HAS BEEN FAIRLY WIDESPREAD ALREADY...ALTHOUGH
SOME OF THE AREAS ALONG/NEAR THE CONTINENTAL DIVIDE HAVE BEEN SLOW
TO DESTABILIZE AFTER THE PERSISTENT STRATIFORM PRECIPITATION THAT
LASTED THROUGHOUT THE EARLY MORNING HOURS THERE. EARLY MORNING
NAM/WRF MODEL RUNS CONTINUED TO INDICATE A MID TROPOSPHERIC
PERTURBATION LIFTING OUT OF THE GILA AND TOWARD THE NORTHERN
MOUNTAINS OF NM BY THIS EVENING. THIS FEATURE CAN BE SEEN ON
VISIBLE SATELLITE IMAGERY...LIFTING NORTH NEAR THE CATRON/CIBOLA
COUNTY LINE...ALTHOUGH IT IS NOT CURRENTLY INDUCING MUCH
CONVECTION. BELIEVE THIS COULD STILL BE A PLAYER FOR THE EVENING
WITH POTENTIAL FOR SOME MORE DESTABILIZATION OVER THE NEXT FEW
HOURS. THIS WILL KEEP THE NORTH CENTRAL TO NORTHEASTERN ZONES
FAVORED FOR PRECIPITATION. MUCH OF THE ENTIRE CENTRAL MOUNTAIN
CHAIN HAS RECEIVED SOME STORMS...AND THUS IT IS PRIMED FOR
FLOODING. WILL KEEP THE WATCH INTACT THROUGH 6 AM.

BY DAWN THE UPPER LOW WILL BE IN UT...INCHING EASTWARD TOWARD CO.
THIS WILL BEGIN INDUCING A SLOW DRYING TREND FROM WEST TO EAST
OVER NM THROUGHOUT THE DAY...ULTIMATELY SHOVING THE HIGHEST
PROBABILITIES FOR PRECIPITATION TO THE SOUTH CENTRAL MOUNTAINS AND
THE LOWLANDS/PLAINS EAST OF THE CENTRAL MOUNTAIN CHAIN. HAVE STILL
KEPT ISOLATED POPS IN FAR WESTERN ZONES...AND EVEN SOME SCATTERED
POPS IN THE NORTHWEST TO NORTH CENTRAL ZONES WHERE PROXIMITY TO
UPPER LOW WILL BRING BETTER FORCING ALOFT. TEMPERATURES WILL
REBOUND A FEW DEGREES WITH LESS CLOUD COVER ON WEDNESDAY...BUT
STILL SHY OF AVERAGE IN ALL BUT THE FAR EASTERN ZONES.

THE UPPER LOW WILL BEGIN TO EVOLVE AND OPEN INTO A WAVE OVER
EASTERN PARTS OF CO/NM BY THURSDAY WITH SLIGHTLY COOLER AIR AND
SOME TRAILING MOISTURE/ENERGY FILLING IN OVER NORTHEAST NM.
ELSEWHERE TEMPERATURES WILL BE FAIRLY COMPARABLE WITH LOWER
CHANCES FOR A STRAY SHOWER OR STORM.

WESTERLY WINDS ALOFT TURN MUCH LIGHTER INTO FRIDAY AS A NEW DOME
OF HIGH PRESSURE BEGINS TO SWELL OVER THE BAJA. THE DRIER AIRMASS
IN THE WESTERN HALF OF THE STATE WILL INHIBIT STORM
DEVELOPMENT...BUT A MODEST SOUTHEASTERLY RETURN FLOW WILL KEEP AT
LEAST ISOLATED STORMS POSSIBLE ALONG AND JUST EAST OF THE CENTRAL
MOUNTAIN CHAIN FRIDAY. HIGH PRESSURE THEN TRIES TO BECOME BETTER
ESTABLISHED OVER SOUTHERN PARTS OF NM WHILE TRYING TO BATTLE SOME
WESTERLY FLOW TO THE NORTH.

52

&&

.FIRE WEATHER...
HYBRID MONSOON SURGE ONGOING ACROSS THE FORECAST AREA. THIS
MOISTURE SURGE AND SUBSEQUENT WETTING RAIN EVENT WILL CONTINUE
THROUGH TONIGHT BEFORE BECOMING LESS PRONOUNCED ON WEDNESDAY.
WETTING RAIN CHANCES WILL REMAIN ACROSS THE SOUTH/EAST WEDNESDAY
BEFORE COVERAGE REALLY LOWERS ON FRIDAY. CONTINUED DRIER FOR THE
WEEKEND WITH SOME ENHANCED BREEZES ON SUNDAY.

DURING THE NEXT 12 TO 16 HOURS WIDESPREAD WETTING RAIN WILL IMPACT
THE FORECAST AREA. SEVERAL BANDS OF RAIN WILL OCCUR AN PROVIDE
LONGER DURATIONS OF RAINFALL. HUMIDITY VALUES WILL REMAIN ON THE
HIGH SIDE THROUGH TONIGHT.

RESIDUAL RAINFALL IS EXPECTED WED MORNING AS THE PACIFIC TROUGH OR
LOW SLOWLY PUSHES EASTWARD. TWO AREAS SHOULD BE FAVORED ON WEDNESDAY
AND THEY INCLUDE NORTHWEST/NORTH CENTRAL AREAS DUE TO THE UPPER LOW
POSITION AND SOUTHERN AREAS DUE TO RESIDUAL MONSOONAL MOISTURE. THE
REST OF THE FORECAST AREA WILL BE IMPACTED BY A MID LEVEL DRY SLOT
AND SOME STABILITY THUS KEEPING RAIN CHANCES TO A MINIMUM.
ADDITIONAL WETTING RAINFALL WILL AFFECT THE TWO PREVIOUSLY MENTIONED
AREAS. SOME BREEZES WILL BE POSSIBLE...ESPECIALLY IF CLOUD COVER
WERE TO BREAK DUE TO MODERATE WIND FLOW ALOFT. HIGH TEMPERATURES
WILL BE A FEW DEGREES BELOW NORMAL AND HUMIDITY VALUES SHOULD BE
NEAR SEASONABLE WITH A LOWERING TREND PRETTY MUCH AREAWIDE.

MODELS ARE STILL IN CONSENSUS WITH THE UPPER LOW PUSHING EASTWARD
OVER COLORADO ON THURSDAY. WRAP AROUND PRECIPITATION AND BACK DOOR
INFLUENCES SHOULD IMPACT NORTH CENTRAL/NORTHEAST AREAS WHILE DRIER
AND MORE STABLE AIR OVERTAKE THE REST OF THE AREA. MODELS STILL SHOW
A MODERATE NORTHWEST FLOW ALOFT SO SOME NORTHWEST BREEZES SHOULD BE
FELT ALONG A LINE FROM FARMINGTON TO CLINES CORNERS. LOWER DEWPOINTS
WILL FILL IN AS THE NORTHWEST BREEZES TAKE HOLD. MODELS SEEM A
LITTLE QUICK ON THEIR DEPICTION OF MUCH LOWER DEWPOINTS SO TRIED TO
GO WITH SOME HIGHER GUIDANCE NUMBERS. EITHER WAY...HUMIDITY VALUES
WILL LOWER SOME MORE ACROSS MOST AREAS.

MODELS CONTINUE TO PAINT SOME LIGHT SHOWER ACTIVITY ACROSS THE
NORTHERN END OF THE SANGRES ON FRIDAY. OTHERWISE CONTINUED DRYING
ACROSS THE ENTIRE AREA. HUMIDITY VALUES SHOULD LOWER A BIT MORE
ACROSS THE WEST AND SHOW LESS CHANGE ELSEWHERE. HIGH TEMPERATURES
WILL BE NEAR NORMAL. HAINES VALUES SHOULD CREEP UP A LITTLE BUT
STILL BE FAIRLY SEASONABLE.

MODELS YESTERDAY SHOWED THE UPPER RIDGE BUILDING OVER THE SOUTHWEST
AREA DURING THE WEEKEND BUT THEY NOW SEEM TO BE PROGRESSING ANOTHER
PACIFIC TROUGH INTO THE WESTERN US QUICKER. ESPECIALLY FOR IMPACTS ON
SUNDAY. THUS...RIDGING SHOULD IMPACT NORTHERN/CENTRAL NEW MEXICO ON
SATURDAY AND COULD POSSIBLY GIVE WAY TO ANOTHER TROUGH ON SUNDAY.
THIS SCENARIO WOULD CREATE A MINI BREAK DOWN OF THE UPPER RIDGE THUS
SOME WIDESPREAD BREEZINESS. PRETTY CLASSIC FOR THIS TIME OF THE YEAR
AS THIS PATTERN HAPPENS FAIRLY OFTEN LATE AUGUST/EARLY SEPTEMBER.
THIS PATTERN TYPICALLY STARTS THE GRADUAL CHANGE IN SEASON THAT
OCCURS IN SEPTEMBER. UNSURE ABOUT THE EARLIER HALF OF NEXT WEEK BUT
SUSPECT THAT DRY CONDITIONS WOULD REMAIN ACROSS THE WEST AND MOST
LIKELY CENTRAL AREAS. PERHAPS SOME RETURN FLOW MOISTURE FROM THE
GULF ACROSS THE EAST AND PSEUDO DRYLINE. DURING THE SEASONAL
TRANSITION PHASE...LONGER TERM MODELS BECOME A LITTLE LESS RELIABLE
SO WILL BE INTERESTING TO WATCH MODEL TRENDS THE NEXT COUPLE OF
WEEKS.

50

&&

.ABQ WATCHES/WARNINGS/ADVISORIES...
FLASH FLOOD WATCH THROUGH LATE TONIGHT FOR THE FOLLOWING ZONES...
NMZ501>527.

&&

$$

SHY









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