Satellite Precipitation Estimates (TXUS20 KWBC)
Issued by NWS

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000
TXUS20 KNES 251824
SPENES
ZCZC NFDSPENES ALL
SPENES
SDZ000-COZ000-WYZ000-UTZ000-IDZ000-NVZ000-
.
SATELLITE PRECIPITATION ESTIMATES..DATE/TIME 12/25/14 1824Z
SATELLITE ANALYSIS BRANCH/NESDIS---NPPU---TEL.301-683-1404
LATEST DATA USED: GOES-15 1815Z KUSSELSON
BLENDED TPW LOOP THRU 1730Z
.
LOCATION...W SOUTH DAKOTA...COLORADO...WYOMING...UTAH...
LOCATION...SE IDAHO..NE .NEVADA...
.
ATTN WFOS...UNR...PUB...BOU...CYS...BYZ...RIW...GJT...SLC...PIH...
ATTN WFOS...BOI...LKN...
ATTN RFCS...MBRFC...ABRFC...WGRFC...CBRFC...NWRFC...CNRFC...
.
EVENT...SNOW AS UPPER LEVEL TROUGH CONTINUES TO DEEPEN AND DROP SOUTHEAST
ACROSS UTAH...
.
SATELLITE ANALYSIS AND TRENDS...BIG PICTURE CONTINUED TO SHOW FULL
LATITUDE EASTERN PACIFIC RIDGE FROM APPROXIMATELY 25N/131W TO 55N/142W
(CENTRAL GULF OF ALASKA) AND THIS WAS PROVIDING A POLAR JET MAX AS
PER LATEST SATELLITE WINDS CENTERED WESTERN VANCOUVER ISLAND TO SFO TO
NORTHERN BAJA THAT MAY ALSO BE HELPED BY A WEAK SUBTROPICAL JET JUST
OFF THE S CA COAST.  UPSHOT OF THE JET ACTIVITY IS UPPER LEVEL WINDS
CONTINUED MUCH STRONGER ON THE WEST SIDE OF THE SE IDAHO/WESTERN UTAH
TROUGH AND WILL ALLOW FOR CONTINUED DEEPENING AND DIGGING SOUTHEAST AND
EVENTUALLY CLOSING OFF FURTHER INTO UTAH.  THOUGH NOT AS WELL DEFINED AS
EARLIER THIS MORNING..STILL A WEAK MOISTURE PLUME FROM N/C BAJA ACROSS
AZ AND WESTERN NM NORTH INTO EASTERN UT/WESTERN COLORADO AND ADVECTING
NORTH INTO WYOMING AND NW INTO SE IDAHO WITH A LITTLE BIT OF WRAP AROUND
ACROSS NW UT...NE NV.
JUST ENOUGH OF THIS WEAK MOISTURE ADVECTION WAS GOING INTO THE COLDER
AIR TO ENHANCE SNOWFALL JUST AHEAD AND TO THE NORTHEAST OF THE CONTINUED
DEEPENING UPPER LEVEL TROUGH.    OTHER LIFTING MECHANISMS WERE WEAK
DEFORMATION ACROSS SE IDAHO THRU NW WYOMING THAT SHOULD CONTINUE TO
SLOWLY MIGRATE SOUTH AND EAST WITH THE DEEPENING UPPER LEVEL TROUGH.
THIS HAS BEEN ADDING TO ENHANCEMENT OF SNOWFALL RATES IN THE S CENTRAL TO
SE IDAHO...E CENTRAL IDAHO TO W CENTRAL AND NW WYOMING AREAS AND A LITTLE
FURTHER EAST IN WYOMING, ESPECIALLY IN THE HIGH ELEVATIONS.  SPOKES OF
SHORT WAVE ENERGY ELIMINATING FROM THE TROUGH WERE PUSHING THROUGH CENTRAL
UTAH AND NE UTAH SE TO W CENTRAL COLORADO WHERE THEY HAVE BEEN LATCHING
ON TO THE WEAK MOISTURE PLUME AND ADVECTION FOR SOME ENHANCED SNOWFALL,
ESPECIALLY HIGHER SPOTS IN THOSE AREAS.  DRIER AIR/LOWERING PWAT ACROSS
MONTANA...N AND C IDAHO AND JUST NOW WORKING INTO EXT N WYOMING HELPING
TO SHUNT HEAVIEST SNOW SOUTH AND SE AND THIS TREND SHOULD CONTINUE.
AND WITH THE PWAT GRADIENT, WEAK AS IT IS, STILL EXISTING...THIS MAY
ALSO ADD A SMALL AMOUNT OF ENHANCEMENT OF SNOW...BUT OTHER FACTORS STATED
ABOVE WILL BE BIGGER FACTORS IN SNOW PRODUCTION.    FURTHER EAST..EYEING
SHORT WAVE LIFTING NE ACROSS SE WYOMING THAT WILL CONTINUE TO IMPACT E
CENTRAL AND NE WYOMING AND WESTERN SD...ESPECIALLY SW AND W CENTRAL SD
FOR THE NEXT FEW HRS.
.
AN ANNOTATED SATELLITE GRAPHIC SHOWING THE HEAVY PRECIPITATION
THREAT AREA SHOULD BE AVAILABLE ON THE INTERNET ADDRESS LISTED
BELOW IN APPROXIMATELY 10-15 MINUTES.
.
SHORT TERM OUTLOOK VALID 1815-2115Z...MEDIUM CONFIDENCE FACTOR
IN SHORT TERM OUTLOOK...TROUGH NW UTAH WILL CONTINUE TO DEEPENING AS IT
MOVES SLOWLY SOUTHEAST FURTHER INTO UTAH.  SPOKES OF SHORT WAVE ENERGY
OUT AHEAD WILL CONTINUE TO LATCH ONTO WEAK MOISTURE ADVECTION FOR SOME
ENHANCED SNOWFALL, ESPECIALLY HIGH SPOTS OF C TO NORTHEASTERN UTAH...W
CENTRAL TO NW COLORADO...WESTERN INTO C WYOMING.  MOISTURE ADVECTION
AROUND TROUGH WILL CONTINUE STEADY SNOW SE IDAHO BUT THIS WILL BE SLOWLY
MIGRATING SOUTHEAST WITH SOME WEAK WRAP AROUND CONTINUING NE NEVADA INTO
S CENTRAL IDAHO/NW UTAH.  SHORT WAVE LIFTING EAST AND NE THROUGH EASTERN
WYOMING WILL CONTINUE SNOW THERE AND FURTHER ENHANCE THE SNOW ACROSS
W CENTRAL AND SW SOUTH DAKOTA, NW NEBRASKA THAT MAY SEE AN OCCASIONAL
BURST THAT GIVES AN INCH PER HR.
.
....NESDIS IS A MEMBER OF NWSCHAT (NESDISSATELLITEPRECIP)....
....NESDIS IS A MEMBER OF 12 PLANET....
.
FOR QUESTIONS AND COMMENTS CONCERNING THE SATELLITE
PRECIPITATION MESSAGES AND GRAPHICS PLEASE EMAIL
SSDPrecip@noaa.gov
.
FOR PRECIP MESSAGES AND GRAPHICS ON THE WEB:
http://www.ospo.noaa.gov/Products/atmosphere/spe/
.
FOR AUTOMATED SATELLITE PRECIPITATION ESTIMATES ON THE WEB:
http://www.star.nesdis.noaa.gov/smcd/emb/ff/CONUS.php
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LAT...LON 4468 10832 4447 10323 3823 10647 3820 11159 4116 11466
4312 11448
.
NNNN


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