Looking at radar, Western South Dakota getting hammered!
NWS Rapid City Discussion. Snowpack and record lows coming. Heat from SE side of low (as I mentioned earlier) is helping increase snow
http://forecast.weather.gov/product....n=1&glossary=0
NATIONAL WEATHER SERVICE RAPID CITY SD
332 AM MDT SUN MAY 10 2015
.SHORT TERM...TODAY THROUGH MONDAY NIGHT
ISSUED AT 331 AM MDT SUN MAY 10 2015
IMPRESSIVE SPRING STORM CONTINUES TO AFFECT MUCH OF THE PLAINS
THIS MORNING...WITH SNOWS ONGOING ACROSS MOST OF THE FA. MAIN LOBE
OF DEEP LAYER ASCENT AND ASSOCIATED FGEN RESPONSE IS WORKING NORTH
ACROSS THE FA WITH PERSISTENT MODERATE SNOWS ACROSS THE EASTERN
FA. DEEP LAYER ASCENT WILL CONTINUE TO INCREASE ACROSS THE FA THIS
MORNING AS THE ASSOCIATED ZONE OF LL FGEN WORKS NW.
FORECAST
MODELS HAVE TRENDED SE WITH STRONGEST BAND OF FGEN /LIKELY DUE TO
LATENT HEAT EFFECTS FROM WDSPRD CONVECTION SE OF THE FA/...PLACING
THE PIVOTING DEFORMATION ZONE ALONG A KRAP TO KD07 LINE THIS
MORNING...WITH THIS AREA OF LIFT TILTING MORE NW THROUGH THE DAY
/IN A GRADUAL WEAKENING STATE/ AS A SECONDARY IMPULSE TRACKS NE
ACROSS NEBRASKA. OVERALL...SNOW TOTALS REMAIN DIFFICULT GIVEN MAY
INSOLATION. HOWEVER THE SHIFTED PLACEMENT OF STRONGEST DEEP LAYER
LIFT HAS SUPPORTED AN ADJUSTMENT IN SNOW TOTALS. WARM GROUND SFC
HAS ALSO MADE FOR A TOUGH FORECAST...AS MANY LOCATIONS STRUGGLED
TO ACCUMULATE UNTIL LATE YESTERDAY EVENING...AND MAINLY ON GRASSY
SFC/S.
GIVEN CONCERNS...HAVE TWEAKED SNOW AMOUNTS DOWN ALTHOUGH
STILL QUITE IMPRESSIVE FOR THIS TIME OF YEAR WITH A WIDESPREAD
ADDITIONAL 6-10 INCHES EXPECTED UNDER THE STRONGEST FGEN. DID MAKE
AN ADJUSTMENT TO HEADLINES ADDING A PORTION OF SCENTRAL SD INTO AN
ADV FOR THIS MORNING AND DROPPING THE WARNING FOR NORTHERN
CAMPBELL GIVEN DEFORMATION ZONE SHIFT. FORECAST MODELS HAVE ALSO
SIG BACKED OFF ON WINDS OVER THE SD PLAINS. HENCE ADJUSTED THE
BLIZZARD HEADLINES REMOVING BUTTE COUNTY. THE REMAINDER OF THE
BLIZZARD WARNING LOOKS MARGINAL ATTM GIVEN WEAKER WINDS...BUT
CLOSE ENOUGH TO PRECLUDE CANCELING.
SNOW WILL CONTINUE THROUGH THE
AFTERNOON AND INTO THE EVENING MOST AREAS...WITH A SLOW NE EXIT AS
PHASING NEARLY STALLS THE UPPER LOW...RESULTING IN A LONGER PERIOD
OF PRECIP OVER THE EASTERN FA...ALTHOUGH IN A WANING FASHION. FEEL
THE NAM IS A LITTLE TOO AGGRESSIVE WITH PRECIP AMOUNTS TONIGHT
INTO MONDAY MORNING ATTM. SOME UPSLOPE FORCING COULD ALSO LINGER
IN THE NORTHERN BLACK HILLS THROUGH TONIGHT...ALTHOUGH MOST SNOWS
SHOULD END THIS EVENING THERE.
CARRIED CHANCE PRECIP THROUGH MUCH
OF MONDAY...SHIFTING EAST THROUGH THE PERIOD...WITH A RAIN/SNOW
MIX POSSIBLE. OTHERWISE...VERY COLD CONDS CAN BE EXPECTED WITH
MOST LOCATIONS REMAINING IN THE 30S...20S IN THE BLACK HILLS.
SIDED WITH THE COLD SIDE OF GUIDANCE THROUGH THE PERIOD GIVEN
EXPECTED SNOW COVER...WITH RECORD TO NEAR RECORD LOWS POSSIBLE.
Please register to participate in our discussions with 2 million other members - it's free and quick! Some forums can only be seen by registered members. After you create your account, you'll be able to customize options and access all our 15,000 new posts/day with fewer ads.
