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189
TXUS20 KNES 010235
SPENES
ZCZC NFDSPENES ALL
SPENES
WIZ000-ILZ000-MOZ000-MNZ000-IAZ000-KSZ000-NEZ000-SDZ000-
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SATELLITE PRECIPITATION ESTIMATES..DATE/TIME 02/01/15 0234Z
SATELLITE ANALYSIS BRANCH/NESDIS---NPPU---TEL.301-683-1404
LATEST DATA USED: GOES-13-0215ZHEEPS/SHEFFLER
NESDIS SNOWFALL RATE PRODUCT: 2307Z
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LOCATION...NW ILLINOIS...N MISSOURI...SW MINNESOTA...
LOCATION...IOWA...NE/N CENTRAL KANSAS...NEBRASKA...SE SOUTH DAKOTA...
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ATTN WFOS...LOT...ILX...LSX...DVN...ARX...DMX...EAX...FSD...OAX...
ATTN WFOS...TOP...ABR...GID...LBF...UNR...GLD...
ATTN RFCS...NCRFC...MBRFC...
.
EVENT...INCREASING MOD/HVY SNOW
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SATELLITE ANALYSIS AND TRENDS...WV IMAGERY INDICATES NRN AND SRN STREAMS
ARE COMBINING OVER CENTRAL US. UPSTREAM UL TROF/ASSOCIATED HEIGHT
FALLS ARE DIGGING TO THE SE AND INCREASING LARGE SCALE LIFT ACROSS CENT
PLAINS REGION. ELONGATED AREA OF LOW PRESSURE EXTENDS FROM NRN TX/OK
PANHANDLE TO W KS WHICH IS CONTRIBUTING TO INCREASING SNOWFALL RATES
DOWNSTREAM GIVEN ISENTROPIC LIFT. LAYERED/BLENDED TPW IMAGERY REVEALS
THAT THE SYSTEM SEEMS TO BE TAPPING INTO TWO DIFFERENT MOISTURE SOURCE
REGIONS. SRLY WINDS AT LOWER LVLS INDICATE MOISTURE FROM THE GULF OF
MEXICO AND SWRLY WINDS AT MID/UPPER LVLS INDICATE MOISTURE FROM THE E
PACIFIC. THE E PAC MOISTURE APPEARS TO CONNECT FURTHER TO THE SW AND
IS POSSIBLY TROPICAL IN ORIGIN. LATEST SFC ANALYSIS INDICATES FRONTAL
BOUNDARY IS SAGGING TO THE SOUTH OVER SRN NE WITH STRONG SFC CONVERGENCE
IN N CENT KS TO W IA EXTENDING EWD TWDS NW IL. NESDIS SNOWFALL RATE
PRODUCT FROM 2307Z INDICATES A WIDESPREAD BAND OF 0.02-0.03 IN/HR AREAL
AVERAGE LIQUID EQUIVALENT RATES THAT HAS CORRELATED WELL LGT-MOD SNOWFALL
OBSERVATIONS OVER THE LAST FEW HRS. HIGHEST RATES OF 0.04-0.06"/HR OVER S
IA WHERE INCRSG MOD SNOWS HAVE BEEN OCCURRING AND UP TO 0.08 IN/HR LIQUID
EQUIVALENT RATES ARE SEEN IN N MO BUT THESE ARE MOST LIKELY ATTRIBUTED
TO THE MELTING LAYER AS TEMPS FROM NW KS ACROSS N MO AND WCENT IL ARE
STILL NEAR OR JUST ABOVE FRZG. WARM LAYER IS ALSO OBSERVED IN TOP 00Z
RAOB NEAR 800 MB CAUSING MIXED PRECIP/SLEET AT MCI AND OTHER STATIONS
ACROSS N MO RECENTLY.
.
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...MEDIUM-HIGH CONFIDENCE FACTOR IN SHORT TERM
OUTLOOK...CLOUD TOP TEMPS CONTINUE TO COOL ACROSS E NE AND S IA DUE TO
SFC CONVERGENCE  ALONG FRNTL BNDRY AND ISENTROPIC LIFT FROM NEWD MOVING
SFC LOW. SNOWFALL RATES SHOULD INCREASE TO 0.5-1.0 IN/HR IN THIS AREA DUE
TO THESE FEATURES. SFC LOW SHOULD TRANSLATE TO NE AND THEN PROGRESS EWRD
OVER S IA/N MO AS UPSTREAM TROF DIGS BEHIND IT. AS UL TROF PROGRESSES
TO SE INCREASING DIFFLUENCE ALOFT SHOULD CONTRIBUTE TO INCREASED MOD TO
LOCALLY HVY SNOWS OVER N CENT/E NE AND FAR SE SD OVER NEXT 1-2 HRS. TROF
AXIS SHOULD THEN PUSH HEAVIEST SNOW AXIS SEWRD INTO E NE/IA/N MO AND
LATER TWDS NW IL.
.
....NESDIS IS A MEMBER OF NWSCHAT (NESDISSATELLITEPRECIP)....
....NESDIS IS A MEMBER OF 12 PLANET....
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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 4371 10006 4367 9888 4283 9107 4131 8885 3946 9185
3967 9911 3968 10060
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NNNN




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