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SATELLITE PRECIPITATION ESTIMATES..DATE/TIME 06/07/07 0040Z
SATELLITE ANALYSIS BRANCH/NESDIS---NPPU---TEL.301-763-8678
LATEST DATA USED: GOES-12 0015Z  HANNA
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ATTN:  RESENT DUE TO CHARACTER TRANSMISSION PROBLEMS
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LOCATION...SOUTH DAKOTA...NORTH DAKOTA...MONTANA...WYOMING...
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ATTN WFOS...ABR...BIS...UNR...BYZ...GGW...TFX...
ATTN RFCS...MBRFC...
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EVENT...HEAVY RAIN
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SATELLITE ANALYSIS AND TRENDS...INTENSE MID LEVEL SYSTEM NOW SLOWLY
MOVING OUT OF WESTERN WYOMING THIS EVENING PER LATEST VAPOR IMAGERY.
FORCING AHEAD OF THIS FEATURE HAS BEEN OVERSPREADING A MODERATELY
TO SIGNIFICANTLY UNSTABLE AIR MASS AND CONVECTIVE ACTIVITY HAS BEEN
DEVELOPING OVER A LARGE PORTION OF E MT AND ARCING SE THROUGH EXTREME
NE WYOMING AND INTO THE W SD.  CONVECTION OVER MOST OF SD HAS BEEN
FAIRLY PROGRESSIVE OVER SD OVER THE LAST HOUR.  THE ONE EXCEPTION
WOULD BE OVER N CNTRL MEADE COUNTY WHERE BOTH IR AND VISIBLE IMAGERY
SHOWS A CONVECTIVE MERGER HAS OCCURRED OVER THE LAST 30 MINUTES AND
A SLOW MOVING OVERSHOOTING TOP CONTINUES TO AFFECT THE AREA.  ANOTHER
IMPENDING CONVECTIVE MERGER APPEARS TO BE LIKELY OVER BUTTE COUNTY OVER
THE NEXT 15-30 MINUTES WHICH WILL ALSO LOCALLY INCREASE RAINFALL RATES.
GOES PRECIPITABLE WATERS RUNNING MOSTLY IN THE 1.0" RANGE OVER THE REGION
SO SLOW MOVING CELLS THAT LOCALLY SATURATE ATMOSPHERE SHOULD HAVE THE
CAPABILITY FOR LOCALIZED 1.5"/HR RAINFALL RATES.
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FURTHER TO THE NORTHWEST CONVECTION HAS DEVELOPED ALONG AN APPROXIMATE
E/W AXIS FROM CARTER TO BIG HORN COUNTY.  CONVECTION HAS BEEN PULSING
WITH NUMEROUS SHORT LIVED OVERSHOOTING TOPS.  NO REAL SIGNIFICANT HEAVY
RAIN PRODUCING SIGNATURE ON SATELLITE IMAGERY (POSSIBLE EXCEPTION WOULD
BE CNTRL ROSEBUD COUNTY) ALONG THIS AXIS BUT STILL ABOVE MENTIONED
OVERSHOOTING TOPS MORE THAN CAPABLE OF PRODUCING A PERIOD OF 1.0"/HR
RAINFALL RATES ESPECIALLY WITH A RATHER SLOW MOVING CELL IN CNTRL
ROSEBUD COUNTY.
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OVER NE MT CONVECTION HAS BEEN DEVELOPING FROM PHILLIPS TO W PRAIRIE
COUNTY.  CONVECTION IN THIS AREA HAS BEEN RATHER SLOW MOVING DUE
TO WEAK MID LEVEL WINDS IN DEFORMATION AXIS.  CONVECTION ACTUALLY
APPEARS AS THOUGH IT HAS BEEN TRYING TO BACKBUILD TOWARDS THE SOUTH.
THE MOST CONCERN IN THIS AREA WOULD APPEAR TO BE NEAR A RATHER PRONOUNCED
OVERSHOOTING TOP OVER SW MCCONE COUNTY.  WOULD ALSO EXPECT LOCAL 1.0"/HR
RAINFALL RATES WITH THIS CELL.  WILL CONTINUE TO MONITOR.
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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 4863 10735 4836 10609 4746 10513 4613 10300 4562 10143
4493 10027 4412 10002 4355 10097 4390 10259 4496 10514
4510 10538 4533 10625 4515 10741 4524 10904 4587 10851
4718 10860 4816 10847
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