ZCZC NFDSPENES ALL
SPENES
SDZ000-NDZ000-MTZ000-WYZ000-IDZ000-
.
SATELLITE PRECIPITATION ESTIMATES..DATE/TIME 04/30/08 2012Z
SATELLITE ANALYSIS BRANCH/NESDIS---NPPU---TEL.301-763-8678
LATEST DATA USED: GOES=12/11 2000Z KUSSELSON
.
LOCATION...SOUTH DAKOTA...NORTH DAKOTA...MONTANA...WYOMING...
LOCATION...IDAHO...
.
ATTN WFOS...BIS...UNR...BYZ...GGW...RIW...TFX...PIH...MSO...BOI...
ATTN RFCS...MBRFC...NWRFC...
.
EVENT...DEVELOPING N ROCKIES STORM CULMINATING IN EXCESSIVE PRECIPITATION
CENTERED ON SE MT...NE WY AND W SD NEXT 30HRS...
.
SATELLITE ANALYSIS AND TRENDS...FRAGMENTED PATCHES OF PRECIPITATION
FROM PARTS OF IDAHO THRU WYOMING AND MONTANA ABOUT ALL THAT IS GOING ON
NOW...BUT THAT ABOUT TO CHANGE OVER THE NEXT DAY OR SO.  SOME  IMPRESSIVE
ANALYSIS FEATURE ALREADY SHOWING UP AND ONE OF THE BIGGEST WAS 160KT
SATELLITE WIND JUST OFF THE WA COAST ON BACK SIDE BROAD UPER TROUGH/N TO
SOUTH SHEAR AXIS FROM WESTERN MT THRU C IDAHO TO W UTAH.  ON THE EAST
SIDE OF THE TROUGH UPPER WINDS ONLY 50-60KTS...SO YOU CAN IMAGINE THE
DIGGING AND DEEPENING THAT WILL BE GOING ON OVER THE NEXT 24HRS WITH
THIS INTERMOUNTAIN TROUGH AS IT SLOWLY MOVES EAST.  CURRENT SREFMEAN
HEIGHT ANOMALIES ABOUT 1.5 STANDARD DEV BELOW NORMAL WITH 500MB TROUGH
AND PROJECTED TO GET TO 3 STANDARD DEV BELOW AND THAT LOOKS GOOD BASED
ON UPPER LEVELS WINDS DIGGING INTO THE BACK SIDE OF CURRENT TROUGH.
AND ANOTHER PARAMETER TO GET THIS EVENT CLOSER TO A PERFECT STORM SCENARIO
FOR PRECIP IS THE MOISTURE THAT IS ALREADY IN PLACE ACROSS THE DAKOTA AND
MONTANA WITH PW ANOMALIES THRU MIDDAY ABOUT 175 PERCENT ON NORMAL NEAR THE
MONTANA-WY BORDER TO 200 PLUS PERCENT ABOVE NORMAL ACROSS W NORTH DAKOTA.
LIKELY TO BE A GOOD OR IS THAT GREAT CONVEYOR BELT OF DEEP (FOR THIS
TIME OF YEAR) MOISTURE TRANSPORT BEING THROWN INTO A COOLING ATMOSPHERE.
AN EVENT TO REMEMBER...WILL CONTINUE TO MONITOR THE DEVELOPMENT AND SEND
OUT MESSAGES OCCASIONALLY.
.
SEE NCEP HPC DISCUSSION AND QPF/S FOR FORECAST.
....NESDIS IS A MEMBER OF 12 PLANET....
.
SSD/SAB WEB ADDRESS FOR PRECIP ESTIMATES:
HTTP://WWW.SSD.NOAA.GOV/PS/PCPN/
...ALL LOWER CASE EXCEPT /PS/PCPN/
.
LAT...LON 4714 10291 4381 10312 4341 11413 4587 11500 4631 11298
4711 11337
.
NNNN