ZCZC NFDSPENES ALL
SPENES
MTZ000-IDZ000-
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SATELLITE PRECIPITATION ESTIMATES..DATE/TIME 04/20/008 0227Z
SATELLITE ANALYSIS BRANCH/NESDIS---NPPU---TEL.301-763-8678
LATEST DATA USED: GOES-11: 0200Z		DS
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LOCATION...WRN MONTANA...NE IDAHO...
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ATTN WFOS...BYZ...GGW...TFX...PIH...MSO...BOI...
ATTN RFCS...MBRFC...NWRFC...
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EVENT...CONTINUING MOD TO HVY SNOW
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SATELLITE ANALYSIS AND TRENDS...BAROCLINIC LEAF HAS AGAIN BECOME
ENHANCED OVER THE PAST FEW HRS AS A JET STREAK ROUNDS THE BASE OF THE
UPPER TROF. STLT WINDS SHOW TWO AREAS OF ENHANCE UPPER LVL DVG..ONE
OVER ERN ID AND THE OTHER SLIGHTLY FARTHER N ALONG THE ERN SIDE OF THE
ROCKY MTNS IN NW MT..JUST W OF KCTB. SFC LOW HAS MOVED FURTHER EWD NOW
TO N CENTRAL WY THOUGH A SLIGHTLY WEAKER LOW IS STILL PRESENT IN ERN
ID. SFC/LOW LVL FLOW IN WRN MT IS FROM THE N/NW AND CONTINUES TO PULL
COLDER AIR DOWN FROM CANADA TO MEET THE LITTLE BIT OF MOISTURE THAT IS
PRESENT OVER THE REGION. 00Z PW ANALYSIS INDICATES 0.5" PW VALUES IN
GGW WITH THE REMAINING MOISTURE STRETCHING SWWD TO JUST NE OF BOI. IR
SHOWS SOME ENHANCING CLOUD TOPS ACROSS SW ID/E ID THAT SHOULD MOVE NE/NWD
RESPECTIVELY INTO THE HIGHER TERRAIN/COLDER AIR ALONG THE MT/ID BORDER
CHANGING OVER TO SNOW. OBJECTIVE ANALYSIS REVEALS BEST SFC THETA-E
ADVECTION IS OCCURRING OVER THE N CENTRAL PART OF THE STATE THOUGH
FROM KGTF TO CWVN. WITH THE SSWRLY MID LVL FLOW PRESENT PER STLT WINDS
AND BETTER MOISTURE TO THE NE..SHOULD SEE HEAVIER PRECIP MOSTLY OVER N
CENTRAL MT NEXT 6 HRS AND FOR THE MOST PART IN THE FORM OF SNOW. EXPECT
SNOWFALL RATES UP TO 1"/HR ARE OCCURRING AT TIMES AND SHOULD CONTINUE
AS RECENT OBS INDICATE MOD SNOW AND VISIBILITIES UNDER 0.5 MILES AT A
FEW LOCATIONS. SEE WEB ADDRESS FOR GRAPHIC IN ABOUT 10 MIN.
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SEE NCEP HPC DISCUSSION AND QPF/S FOR FORECAST.
....NESDIS IS A MEMBER OF 12 PLANET....
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SSD/SAB WEB ADDRESS FOR PRECIP ESTIMATES:
HTTP://WWW.SSD.NOAA.GOV/PS/PCPN/
...ALL LOWER CASE EXCEPT /PS/PCPN/
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LAT...LON 4956 11169 4921 10768 4393 11213 4523 11523
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