ZCZC NFDSPENES ALL
SPENES
.
SATELLITE PRECIPITATION ESTIMATES..DATE/TIME 04/30/07 1936Z
SATELLITE ANALYSIS BRANCH/NESDIS---NPPU---TEL.301-763-8678
LATEST DATA USED: G12 1915Z CK
.
LOCATION...WISCONSIN...S MINNESOTA...
.
ATTN WFOS...GRB...MKX...ARX...MPX...FSD...
ATTN RFCS...NCRFC...
.
EVENT...BAND OF CNVTN N OF WARM FRONT..POTENTIAL FOR CELL TRAINING EVENT
.
SATELLITE ANALYSIS AND TRENDS...A BAND OF CNVTN HAS DEVELOPED OVER THE S
MN ACRS WI OVER THE PAST COUPLE OF HRS. LATEST SFC DATA SHOWS THAT THE
CNVTN OVER MN IS A BIT N OF WARM FRONT..WHILE WI CNVTN IS STILL WELL
N OF WARM FRONT ATTM. DEW POINTS S OF FRONT RANGE FM THE MID 50S TO
AROUND 60F. WHILE HIGHEST DEW POINTS ARE TO THE S ATTM..GOES SOUNDER
PW IMAGERY SHOWS THAT THE CONVECTIVE BAND IS COINCIDENT WITH ZONE OF
INCRG PWS OF 1"PLUS..WHICH IS INDICATIVE OF LOWER ATMOSPHERE MOISTENING
UP. GOES SOUNDER LI IMAGERY WAS SHOWING INSTABILITY REMAINING S OF THE
DISCUSSION AREA. HOWEVER..MOST RECENT IMAGE SHOWS THAT UNSTABLE LI VALUES
HAVE NOW PUSHED UP INTO S MN..AND POISED TO SPREAD INTO SW WI.
.
THE BAND OF CNVTN..WHILE SITUATED N OF THE SFC FRONT ATTM..IS WITHIN ZONE
OF 850MB THETA-E ADVECTION. LATEST PROFILER DATA SHOWS SWRLY VECTOR OF
30 KTS OVER CENTRAL IA. NAM AND GFS MODELS FCST THE THETA-E ADVECTION TO
INCR IN MAGNITUDE DURING THE AFTN AND TONIGHT..WITH MAX CENTERED OVER WI.
.
BASED ON RECENT GOES SOUNDER/IR/VIS IMAGERY TRENDS..ALONG WITH FCST OF
INCRG THETA-E ADVECTION..THERE IS THE POTENTIAL FOR A HVY RAIN CELL
TRAINING EVENT OVER PART OF THE DISCUSSION AREA. WILL CONTINUE TO
MONITOR THE SITUATION AN ISSUE UPDATED SPENES LATER. ATTM..A GRAPHIC
ACCOMPANYING THIS SPENES WILL BE POSTED AT THE WEB ADDRESS BELOW. ALLOW
APPX 5 MINUTES FOR TRANSMISSION TO THE WEB.
.
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 4523 9487 4464 8637 4412 8688 4325 8756 4371 9517 4482
9497
.
NNNN
Full Size Graphic
-
