prinsburg_wx Posted December 11, 2010 Share Posted December 11, 2010 08Z Link to comment Share on other sites More sharing options...
dilly84 Posted December 11, 2010 Share Posted December 11, 2010 Nam clobbers us Jay! Link to comment Share on other sites More sharing options...
baroclinic_instability Posted December 11, 2010 Share Posted December 11, 2010 You mean NE? No NW. Surface low is almost pushing into SD. You can almost see it at Yankton, SD. http://rap.ucar.edu/weather/surface/displaySfc.php?region=pir&endDate=20101211&endTime=-1&duration=0 http://www.hpc.ncep.noaa.gov/sfc/lrgnamsfcwbg.gif Link to comment Share on other sites More sharing options...
JayPSU Posted December 11, 2010 Share Posted December 11, 2010 Nam clobbers us Jay! Absolutely destroys folks from south central Ohio, to Toledo, to Hoosier, and into Michigan. Absolutely beautiful. Link to comment Share on other sites More sharing options...
dilly84 Posted December 11, 2010 Share Posted December 11, 2010 Absolutely destroys folks from south central Ohio, to Toledo, to Hoosier, and into Michigan. Absolutely beautiful. Yes it is. Can't wait to see those soundings Link to comment Share on other sites More sharing options...
baroclinic_instability Posted December 11, 2010 Share Posted December 11, 2010 Should be interesting, as Hoosier said right now mostly seems intensity error, track a tad off NW but the low may quickly shift E with time. Within next 3-6 hours will be important as all guidance takes the surface low due E. Link to comment Share on other sites More sharing options...
Stebo Posted December 11, 2010 Share Posted December 11, 2010 Should be interesting, as Hoosier said right now mostly seems intensity error, track a tad off NW but the low may quickly shift E with time. Within next 3-6 hours will be important as all guidance takes the surface low due E. Yeah from what I am seeing is its a bit stronger a hair NW but to me it seems slower more than anything, the trends are what to monitor to see if it keeps moving E. Link to comment Share on other sites More sharing options...
Omahawx Posted December 11, 2010 Share Posted December 11, 2010 near 50 still here in Omaha nebraska..with upper teens just northwest of here in Northeast Nebraska Link to comment Share on other sites More sharing options...
MadTown Posted December 11, 2010 Share Posted December 11, 2010 HPC low track Link to comment Share on other sites More sharing options...
Stebo Posted December 11, 2010 Share Posted December 11, 2010 HPC low track They finally dropped it south some. Day 1-2 snow maps Link to comment Share on other sites More sharing options...
prinsburg_wx Posted December 11, 2010 Share Posted December 11, 2010 wish this would fill in...i'm sitting between the 2 heavy bands Link to comment Share on other sites More sharing options...
Stebo Posted December 11, 2010 Share Posted December 11, 2010 Time for some LOLs, Here is the comic relief map at 48 hours. 10 to 1 ratios here. Daddylonglegs would approve of this message. Link to comment Share on other sites More sharing options...
Sidewinder Posted December 11, 2010 Share Posted December 11, 2010 IND is holding off on advisories. That one winter storm where they busted badly, I think early last year, can't blame them for continuing to play it safe. SINCE STRONG WINDS/MORE SIGNIFICANT SNOWS DO NOT LOOK TO OCCUR UNTIL LATER SUNDAY...AND WITH SOME UNCERTAINTIES IN THE TRACK OF THE SYSTEM...WILL HOLD OFF ON ISSUING ANY ADVISORIES AT THIS TIME. WILL CONTINUE TO HIGHLIGHT IN SPS/HWO. Link to comment Share on other sites More sharing options...
Stebo Posted December 11, 2010 Share Posted December 11, 2010 From DTX, personally I don't know if staying pat on the watches is the right move, especially when noting the forecaster mentioning the bolded part. If there is uncertainty but a potential of a significant snowfall at this rime range put the watch out and downgrade to an advisory. .LONG TERM...TONIGHT THROUGH NEXT FRIDAYAN INTENSE STORM SYSTEM WILL DEVELOP ACROSS THE MIDWEST TODAY BRINGING HEAVY SNOW AND WINDY CONDITIONS TO PORTIONS OF SOUTHEAST MICHIGAN FROM LATE TONIGHT THROUGH MONDAY. NORTHERN PORTIONS OF THE FORECAST AREA REMAIN ON TRACK TO SEE THE HEAVIEST SNOWFALL...ESPECIALLY DOWNWIND OF LAKE HURON...WHILE LOCATIONS ACROSS THE SOUTH MAY BE JUST WARM ENOUGH AT THE ONSET TO BE LESS EFFICIENT AT ACCUMULATING...THUS CUTTING DOWN ON TOTAL SNOWFALL AND WILL LEAVE OUT OF THE WATCH FOR NOW. NORTHERLY WINDS WILL BECOME STRONG BY SUNDAY NIGHT WITH AREAS OF BLOWING AND DRIFTING SNOW WITH DANGEROUS WIND CHILL CONDITIONS DEVELOPING AS VALUES APPROACH 10 BELOW ZERO. WINDS COMING OFF LAKE HURON WILL YIELD AN ENHANCED THREAT FOR PORTIONS OF THE THUMB LATE SUNDAY NIGHT AND MONDAY AND BLIZZARD CONDITIONS ARE POSSIBLE WITH LOW VISIBILITIES IN FALLING/BLOWING/DRIFTING SNOW. 00Z MODELS CONTINUE TO NARROW IN ON THE TRACK OF THE STORM NOW THAT THE STRONG JET DRIVING THIS SYSTEM HAS MOVED OVER THE PACIFIC NORTHWEST. MAIN ADJUSTMENT OVER THE LAST 24 HOURS FOR THE NAM/GFS HAS BEEN TOWARDS A DEEPER AND SLOWER UPPER LEVEL LOW WHICH HAS RESULTED IN THE SURFACE LOW ALSO TRENDING BACK TO THE SOUTH. SOME SPREAD STILL EXISTS BETWEEN THE MODELS ON THE EXACT TRACK...WITH THE NAM RUNNING ABOUT 110 MILES FURTHER NORTH BY 12Z SUNDAY. THIS PLACES THE NAM ON THE NORTHERN SIDE OF THE GUIDANCE ENVELOPE WITH THE GEM/UKMET/GFS/ECMWF CLUSTERED TOGETHER WITH A TRACK NEAR THE STATE LINE. THE 06Z NAM HAS ALSO JUST ARRIVED AND HAS JOINED THE CONSENSUS TO THE SOUTH. GIVEN THE SOUTHERN TREND...WITH MANY ENSEMBLE MEMBERS LYING EVEN FURTHER TO THE SOUTH...WILL LEAN THE FORECAST IN THAT DIRECTION AND MONITOR FOR ANY FURTHER TRENDS TO THE SOUTH ON THE 12Z CYCLE BEFORE MAKING THE FINAL WARNING/ADVISORY DECISIONS. THE TREND TO THE SOUTH DOES RESULT IN A COLDER AND MORE SNOWY SOLUTION FOR SOUTHEAST MICHIGAN AND THE SNOWFALL FORECAST ACROSS THE METRO AREA MAY NEED TO BE INCREASED. WOULD GENERALLY CLASSIFY THIS EVENT AS A LONG DURATION/MODERATE INTENSITY TYPE OF EVENT. THE ARRIVAL OF PRECIPITATION HAS SLOWED DOWN SLIGHTLY ON SATURDAY EVENING...WITH CONDENSATION PRESSURE DEFICITS SHOWING SNOW ARRIVING BETWEEN 10 PM AND 3 AM. NAM THERMAL PROFILES REMAIN SLIGHTLY WARMER AND STILL SUPPORTS A RAIN/SNOW MIX AT THE ONSET OF PRECIPITATION FROM METRO DETROIT SOUTH TO THE OHIO BORDER BUT AM LEANING TOWARDS MORE OF A WET SNOW. EVEN THE WARMER NAM SHOWS THE MARGINAL WARM LAYER BEING OVERCOME QUICKLY AS THE COLUMN SATURATES AND OCCLUDED FRONT ARRIVES. SYSTEM RELATIVE ISENTROPIC ASCENT COMBINED WITH THE MID-LEVEL DEFORMATION AXIS LIFTING OVERHEAD LATE SATURDAY NIGHT WILL BRING A MODERATE SNOWFALL WITH 1-4 INCHES ACROSS SOUTHEAST MICHIGAN. CURRENT TRACK OF THE UPPER LEVEL LOW ACROSS INDIANA AND OHIO ON SUNDAY PUSHES THE TROWAL AND FAVORABLE DEFORMATION AXIS NORTH OVER LAKE HURON. THE TRAJECTORY OFF THE LAKE...ALTHOUGH INSTABILITY DOES NOT REALLY RAMP UP UNTIL LATE IN THE DAY...SHOULD RESULT IN MODERATE TO HEAVY SNOW PERSISTING ACROSS THE NORTHERN HALF OF THE FORECAST AREA. A MID-LEVEL DRY SLOT NUDGING INTO THE SOUTHERN COUNTIES THREATENS TO REDUCE SNOWFALL...THUS SUPPORTING THE DECISION TO LEAVE THE WATCH OUT OF THE SOUTH. THE CONCERN REMAINS THAT A FURTHER SHIFT TO THE SOUTH WILL BRING THE DEFORMATION AXIS AS FAR SOUTH AS DETROIT AND RESULT IN HIGHER TOTALS ACROSS THE SOUTH. Link to comment Share on other sites More sharing options...
snowlord81 Posted December 11, 2010 Share Posted December 11, 2010 Interesting not going with at least an advisory for north of I-70. New Nam shows me getting up to 6 inches of snow here in Central Hamilton county. Link to comment Share on other sites More sharing options...
KeenerWx Posted December 11, 2010 Share Posted December 11, 2010 IND going for around an inch SW to near 4" NE. Looking at the ZFP for Lafayette, looks like they expect 1-2" in this area. LOT going for 1-2" Sunday for back at home, with "several inches possible" on Sunday night (referring to Lake Effect, likely). Their experimental snow accumulation map suggests around 4" for back at home. Personally, I like 2-3" for Lafayette, and 4" looks good back at home (wild card being LES and how long it stays in the area). Was contemplating going back home for 2 days before finals to see what the Lake Effect does. Right now, it doesn't look like it will amount to much (a quick 1-2" looks likely). However, lake effect is fickle and who the heck knows what will happen. Will probably assess the situation in the morning. If it looks likely that I will get a bit more than 4" at home, I'll probably head up there and study the rest of the weekend (snow may deter me, or it may motivate me, who knows). Would LOVE to be in SW Michigan/North Central Indiana at this point. I need to move. Link to comment Share on other sites More sharing options...
Stebo Posted December 11, 2010 Share Posted December 11, 2010 GRR went watch for entire CWA, makes DTX's lack of watch south of I-69 stand out more. SHORT TERM...(407 AM EST SAT DEC 11 2010)(TODAY THROUGH MONDAY) FORECAST CONCERNS DEAL WITH THE APPROACHING STORM THAT CURRENTLY IS NEAR THE NE/IA BORDER. LATEST MODEL GUIDANCE SHOWS THE LOW TRACK TRENDING SOUTH ALONG THE IN/MI BORDER. THE OPERATIONAL GFS AND ECMWF ARE NOW IN MUCH BETTER AGREEMENT WITH THEIR ENSEMBLE MEANS AND HAVE CONVERGED ON A TRACK ALONG THE BORDER. HOWEVER THERE REMAINS ROOM FOR MORE MODIFICATION TODAY. IF IT KEEPS TRENDING SOUTH...IT MAY MEAN LESS SNOW OVER OUR NRN CWA. AS SUCH WE KEPT THE WATCH INTACT AND ADDED THE REST OF THE COUNTIES TO IT. THE NAM CONTINUES TO BE THE FARTHEST NORTH...ALTHOUGH THE 06Z RUN IS TRENDING SOUTH...AND SO HAS THE LEAST AMOUNT OF SNOW IN THE SOUTH. THE PCPN WILL BEGIN THIS AFTERNOON AS SOME RAIN BUT TURN TO SNOW BY EVENING. MODERATE TO STRONG FGEN FORCING IS PROGD FROM NEAR MKG TO MOP FROM 09Z TO 18Z SUNDAY. THERE SHOULD BE QUITE A BIT OF DEFORMATION SNOW DEVELOP TONIGHT AND SUNDAY AS THE TROWAL MOVES THROUGH. IT/S ENTIRELY POSSIBLE...BUT NOT CERTAIN...THAT WE/LL SEE A FOOT OF SNOW OVER THE NRN 1/2 OF THE CWA FROM THIS STORM...AND THAT/S BEFORE THE LAKE EFFECT SNOW DEVELOPS. STRONG NORTH WINDS WILL DEVELOP LATE TONIGHT AS THE LOW PASSES TO THE SOUTH. THIS COULD ACTUALLY BE A MITIGATING EFFECT TO LAKE SNOW AS H8 WINDS IN THE 50-60KT RANGE WILL PROHIBIT BANDS FROM ESTABLISHING. EVEN SO...STRONG OMEGA IN A FAIRLY WIDE DGZ WILL CREATE QUITE A BIT OF SNOW. RH FIELDS SHOW DEEP MOISTURE WITH THIS SYSTEM. WINDS GUSTING TO 50 MPH ALONG THE LAKESHORE WILL CREATE NEAR BLIZZARD CONDITIONS LATE SUNDAY NIGHT AND MONDAY. OVERALL...SNOW TOTALS ALONG THE LAKE SHORE COULD TOTAL A FOOT OR TWO BY LATE MONDAY AND 6 TO 9 INCHES SOUTH OF I-96/69 AND EAST OF US-131 INCLUDING GRAND RAPIDS AND LANSING . ACROSS THE NRN CWA AROUND A FOOT IS POSSIBLE. WIND CHILLS WILL FALL BELOW 0 LATE SUNDAY NIGHT AND MONDAY. Link to comment Share on other sites More sharing options...
MadTown Posted December 11, 2010 Share Posted December 11, 2010 sorry, but gonna ask as we near afd time. If you are milwaukee NWS what do you do with the counties in the winter storm watch. winter weather adv or warning Link to comment Share on other sites More sharing options...
dilly84 Posted December 11, 2010 Share Posted December 11, 2010 Jay, nam puts out nearly 8" Link to comment Share on other sites More sharing options...
michsnowfreak Posted December 11, 2010 Share Posted December 11, 2010 Absolutely destroys folks from south central Ohio, to Toledo, to Hoosier, and into Michigan. Absolutely beautiful. The NAM, by FAR the northern outlier, has shifted well enough south at 6z that now it has DTW almost all snow (0.02" qpf falls as rain, 0.96" falls as snow!). So pretty much all models track the low south of us, some ensemble members way south. This is all of a sudden turning into a potentially big snowstorm for SE MI! DTX not issuing a wath CWA-wide seems silly, but you can tell they are already hinting that updates may be coming soon. I think it will go up soon. I just got home from going out with a friend, so I am off to bed. By the time Im up the 12z runs should be in and should solidify if we are seeing a good snowstorm! Link to comment Share on other sites More sharing options...
B-Rent Posted December 11, 2010 Share Posted December 11, 2010 Interesting not going with at least an advisory for north of I-70. New Nam shows me getting up to 6 inches of snow here in Central Hamilton county. IND SHORT TERM /TONIGHT THROUGH TUESDAY/... FOCUS IS ON THE ADVERSE WINTER WEATHER EXPECTED SUNDAY INTO MONDAY. ALTHOUGH THERE REMAINS DIFFERENCES IN THE DETAILS...THE MODELS ARE CONVERGING ON A SOLUTION A LITTLE FARTHER SOUTH THAN PREVIOUS RUNS. WILL USE AN ENSEMBLE APPROACH FOR THE MOST PART...BUT LEAN AT TIMES ON THE NAM FOR TEMPERATURES AS IT USUALLY DOES BETTER WITH THE COLD AIR. FRONT WILL SWEEP ACROSS THE AREA TONIGHT. EXPECT RAIN EARLY IN THE EVENING AHEAD OF THE FRONT...THEN A QUICK CHANGEOVER TO SNOW BEHIND THE FRONT. MOST OF THE PRECIPITATION WILL BE FALLING AHEAD OF THE FRONT AS DRY SLOT WILL WORK IN QUICKLY BEHIND IT...SO DO NOT EXPECT MUCH SNOWFALL TONIGHT. WILL GO HIGH POPS THIS EVENING...DROPPING TO CHANCE OVERNIGHT AS DRY SLOT WORKS IN. WENT CLOSER TO THE COLDER OF THE MOS GUIDANCE AND NAM 2M TEMPERATURES FOR LOWS TONIGHT DUE TO THE STRONG COLD ADVECTION BEHIND THE FRONT. THERE LOOKS TO BE A RELATIVE LULL SUNDAY MORNING AS BEST CHANCES FOR SNOW ARRIVE SUNDAY AFTERNOON IN DEFORMATION BEHIND THE UPPER LOW. WILL GO CHANCE POPS SUNDAY MORNING THEN LIKELY MOST AREAS SUNDAY AFTERNOON. LOOKS LIKE AN INCH OR TWO IS POSSIBLE SUNDAY. THE PROBLEMS WILL BEGIN LATER IN THE AFTERNOON ON SUNDAY WHEN STRONG WINDS MOVE IN FROM THE WEST. BY 00Z 40-50KT WINDS WILL BE AT 925MB...AND SOME OF THESE WILL WORK DOWN AS GUSTS OVER 30KT AT THE SURFACE. THESE WILL CAUSE SOME BLOWING SNOW ISSUES ACROSS AREAS THAT SEE A LITTLE MORE SNOW SUNDAY...WHICH IS ACROSS THE NORTHERN FORECAST AREA. TEMPERATURES MAY RISE A BIT SUNDAY AFTERNOON AS COLD CORE MOVES OFF TO THE EAST WITH THE UPPER LOW. MAV LOOKS RIDICULOUS WITH ITS HIGHS IN THE 30S...SO STAYED CLOSER TO THE MUCH COLDER MET. SYNOPTIC SNOWS WILL DIMINISH SUNDAY EVENING BUT THEN LAKE EFFECT/LAKE ENHANCED SNOWS KICK IN WITH STRONG FLOW ACROSS LAKE MICHIGAN. WILL GO ABOVE MAV POPS AND KEEP HIGH CHANCE OR LIKELY POPS SUNDAY NIGHT ACROSS THE EASTERN HALF OF THE FORECAST AREA. THE AFOREMENTIONED STRONG WINDS WILL STILL BE AROUND WITH GUSTS AROUND 35KT POSSIBLE. WILL CONTINUE TO MENTION BLOWING SNOW WHERE APPROPRIATE. LAKE EFFECT SNOW WILL CONTINUE INTO MONDAY NIGHT ACROSS THE FAR NORTHEAST. WINDS WILL STILL BE GUSTY ON MONDAY AS WELL. DRY CONDITIONS SHOULD RETURN TO ALL AREAS BY TUESDAY. AT THE MOMENT SNOW ACCUMULATIONS FROM SUNDAY THROUGH THE DAY MONDAY LOOK TO BE FROM AROUND AN INCH SOUTHWEST TO AROUND 4 INCHES NORTHEAST. SINCE STRONG WINDS/MORE SIGNIFICANT SNOWS DO NOT LOOK TO OCCUR UNTIL LATER SUNDAY...AND WITH SOME UNCERTAINTIES IN THE TRACK OF THE SYSTEM...WILL HOLD OFF ON ISSUING ANY ADVISORIES AT THIS TIME. WILL CONTINUE TO HIGHLIGHT IN SPS/HWO. Link to comment Share on other sites More sharing options...
Stebo Posted December 11, 2010 Share Posted December 11, 2010 Weird now DTX has a watch from 8 mile north, yet saying watch will be unchanged in AFD. Link to comment Share on other sites More sharing options...
michsnowfreak Posted December 11, 2010 Share Posted December 11, 2010 Weird now DTX has a watch from 8 mile north, yet saying watch will be unchanged in AFD. Based on model trends, it makes no sense not to have the entire area in a WSW. Esp since our 1 northern outlier (NAM) came south and now gives us almost 1" qpf in snow. Link to comment Share on other sites More sharing options...
janetjanet998 Posted December 11, 2010 Share Posted December 11, 2010 just checked the RUC seems to be a tad more NORTH then the runs a few hours ago Link to comment Share on other sites More sharing options...
prinsburg_wx Posted December 11, 2010 Share Posted December 11, 2010 09Z Link to comment Share on other sites More sharing options...
janetjanet998 Posted December 11, 2010 Share Posted December 11, 2010 AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE QUAD CITIES IA IL 334 AM CST SAT DEC 11 2010 SHORT TERM...TODAY AND TONIGHT DEVELOPING WINTER STORM TO INTENSIFY RAPIDLY OVER THE FORECAST AREA TODAY. AT 08Z...THE LOW PRESSURE CENTER WAS NORTH OF OMAHA. RAPIDLY STRENGTHENING UPPER LOW OVER NORTHEAST NEBRASKA IS DEEPENING AND CLOSING OFF FROM THE OPEN SHORTWAVE EVIDENT ONLY A FEW HOURS AGO. WITH LOTS TO LOOK AT AND UPGRADES TO HEADLINES THIS MORNING...A MORE DETAILED DISCUSSION WILL BE DELAYED. UPSHOT IS THAT THE SURFACE LOW IS NOW TRENDING TOWARD A SLIGHTLY MORE SOUTHERLY TRACK THAN ADVERTISED THE PAST SEVERAL DAYS...AND MAY STILL TRACK A BIT FURTHER SOUTH THAN LATEST MODELS DEPICT BASED ON THE STRENGTH OF THE SYSTEM. BLIZZARD CONDITIONS LOOK LIKELY TONIGHT OVER EASTERN IA AND WILL UPGRADE THE WATCH TO A WARNING TONIGHT. LESS CERTAINTY EXISTS THAT THE EAST WILL SEE THE BLIZZARD CONDITIONS. MAY BE MORE OF AN ADVISORY SITUATION FOR SNOW AND BLOWING SNOW. FOR NOW...AS THE ONSET IS STILL 24 HOURS OUT AND FURTHER MINOR ADJUSTMENTS TO THE SYSTEM WILL LIKELY TAKE PLACE...WILL KEEP THE BLIZZARD WATCH GOING FOR ROUGHLY AREAS W OF THE MS RIVER LATE TONIGHT THROUGH SUNDAY AFTERNOON. NEAR TERM TRENDS ALSO AN ISSUE AND WILL HAVE TO WATCH CLOSELY AS WE MAY BE NEAR ADVISORY CONDITIONS FOR FREEZING RAIN/DRIZZLE THIS MORNING N OF I-80 AND ALONG AND E OF THE MS RIVER. ..SHEETS.. LONG TERM...SUNDAY THROUGH FRIDAY IMPRESSIVE BLIZZARD TO NEAR BLIZZARD CONDITIONS WILL CONTINUE THROUGH NOON SUNDAY...BEFORE CONVERTING TOWARD A HIGH END BLOWING SNOW OR POSSIBLE GROUND BLIZZARD THROUGH EARLY SUNDAY EVENING. MODELS CONTINUE TO SLOW...STRENTHEN...SLIGHTLY ADJUST THE SYSTEM TO THE SOUTH. THIS LOOKS TO CONTINUE ACCUMULATING SNOW IN THE DEF ZONE...POSSIBLY MODERATE IN INTENSITY...THROUGH THE MORNING SUNDAY. ADDITIONAL ACCUMULATION OF 1 TO 2 INCHES SEEMS VERY LIKELY GIVEN THE DEEP DENDRITIC LIFT FORECAST BY THE GFS AND INFERRED FROM THE ECMWF AND GEM. THIS SNOW WILL CONTRIBUTE TO THE LOFTED BLOWING SNOW...MAKING FOR WIDESPREAD NEAR BLIZZARD TO BLIZZARD CONDITIONS. TEMPERATURES WILL FALL THROUGH THE DAY...WITH THE NORTHWEST HOVERING AROUND ZERO FOR MOST OF THE DAY. THE SOUTHEAST MAY START IN THE MID TO UPPER TEENS...BUT WILL ALSO FALL THE SINGLE DIGITS BY LATE MORNING. WIND CHILL WARNING CRITERIA OF -30F MAY BE MET BY SUNDAY EVENING...CONTINUING INTO MONDAY MORNING. ACTUAL TEMPERATURES SHOULD EASILY GO BELOW ZERO...WITH -10 LIKELY OVER THE NORTH 1/2 OR SO. AFTER A SUNNY BUT WINDY AND COLD DAY MONDAY...THE RIDGE GETS OVER HEAD FOR MONDAY NIGHT INTO TUESDAY. THIS SHOULD PROVIDE ANOTHER VERY COLD NIGHT...BUT WITH LESS WIND...WE MAY SEE ONLY -15 TO -20 ON WIND CHILLS. TUESDAY WILL SEE TEMPS MODERATE ALOFT...BUT WITH THE RIDGE IN PLACE OVER SNOW COVER...OUR CURRENT HIGHS OF 10 TO 20 LOOK RATHER OPTIMISTIC. Link to comment Share on other sites More sharing options...
Omahawx Posted December 11, 2010 Share Posted December 11, 2010 Cold front is currently blasting through, temp dropped from 48 to 35 in a matter of 45 minutes Link to comment Share on other sites More sharing options...
dilly84 Posted December 11, 2010 Share Posted December 11, 2010 I'm curious how long our local Mets in central ohio can keep saying 1-2" 6z nam soundings give .868 of snow. With high ratios. Link to comment Share on other sites More sharing options...
baroclinic_instability Posted December 11, 2010 Share Posted December 11, 2010 6Z GFS not only stopped southward track but is a tad N. Not much of a difference though through 12 hours. Link to comment Share on other sites More sharing options...
prinsburg_wx Posted December 11, 2010 Share Posted December 11, 2010 AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN 344 AM CST SAT DEC 11 2010 .DISCUSSION... MAJOR SNOWSTORM AFFECTING MUCH OF THE CWA INTO TONIGHT. TEMPERATURES DID WARM ENOUGH FOR A MIX OF FREEZING RAIN...SLEET AND SNOW OVER FAR SOUTH CENTRAL MINNESOTA DURING THE NIGHT AS WARM FRONT SURGED NORTH ACROSS IOWA. MAY KEEP A BIT OF A MIX EARLY AM FOR THIS REGION...AS CRITICAL THICKNESS REMAINS WARM ENOUGH. MAY SHOW WILL BE PERIODS/BANDS OF HEAVY SNOW AS UPPER TROUGH MOVING THROUGH EASTERN NEBRASKA INTENSIFIES. CURRENT WATER VAPOR LOOP SHOWS RATHER STRONG DRYING MOVING INTO/THROUGH BASE OF TROUGH. SYSTEM APPEARS TO BE TAKING A NEGATIVE TILT AS WELL. FRONTOGENESIS AND MINUS 15C OMEGA FIELD LINES UP ACROSS EASTERN CENTRAL MN AND PARTICULARLY WC WI...MAINLY ALONG A PRIOR LAKE TO WOODBURY AND EAST TO MENOMINEE AND EAU CLAIRE WISCONSIN LINE. THIS MAY BE THE AREA SEEING THE HIGHEST SNOW ACCUMULATIONS...THOUGH ISENTROPIC LIFTS MAXIMIZES FROM JUST WEST OF THE METRO TO NW WI. STILL SHOWING A GOOD 2.5 G/KG OF MIXING RATIO TO WORK WITH AND WITH SUCH STRONG FORCING...WILL BE NO PROBLEM SEEING 1 INCH AN HOUR SNOWFALL RATES DURING HEAVY SNOW. WILL LIKELY START OFF THIS MORNING WITH A 4-7 INCH SNOW BAND ACROSS THE METRO INTO A PORTION OF WC WI THIS MORNING. WILL HAVE TO TRY AND MAP THIS INTO GOING SNOWFALL TOTAL GRID WHICH BRINGS IN A 18 INCH TOTAL INTO WC WI WITH 15 INCHES COMMON OVER MUCH OF THE METRO. AS THE STORM MOVES OVER CENTRAL AND EASTERN IOWA...STRONGER NORTH/NORTHWEST WINDS WILL DIVE INTO THE SYSTEM WITH SOME WIND GUSTS TO 45 MPH LIKELY ACROSS THE SOUTHWEST INTO SOUTH CENTRAL MINNESOTA...THIS AFTERNOON INTO TONIGHT. NEAR WHITEOUT CONDITIONS WILL LIKELY DEVELOP OVER MUCH OF THIS REGION. THIS ALONG WITH FALLING TEMPERATURES AND WINDCHILLS DROPPING BELOW MINUS 25 LATER TONIGHT...DEFINITE DANGEROUS BLIZZARD CONDITIONS IN OPEN COUNTRY INTO THE SOUTH. Link to comment Share on other sites More sharing options...
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