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Plains Weather Discussion


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Going to be a wind show tomorrow across North Dakota. These rapidly intensifying bent back lows have a tendency to be efficient wind machines since they are so conducive to deep mixing/subsidence on the cold side of the low. I wouldn't be surprised if there are a few 60 gusts near the valley.

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1-2 inches of wind driven rain possible also with the storm. Where's "cmichweather"...he still around?

URGENT - WEATHER MESSAGE

NATIONAL WEATHER SERVICE GRAND FORKS ND

312 PM CDT MON SEP 19 2011

...HIGH WINDS TUESDAY AND TUESDAY NIGHT...

.WINDS WILL INCREASE TUESDAY MORNING AND MAY GUST OVER 55 MPH BY

TUESDAY AFTERNOON AND EVENING ACROSS EASTERN NORTH DAKOTA INTO

THE RED RIVER VALLEY REGION OF MINNESOTA. THE STRONGEST WINDS

WILL LIKELY OCCUR IN THE DEVILS LAKE BASIN...AND THIS MAY CAUSE

WAVES FROM 4 TO 7 FEET AND THE POTENTIAL FOR ROAD BED EROSION.

...HIGH WIND WATCH REMAINS IN EFFECT FROM TUESDAY MORNING THROUGH

LATE TUESDAY NIGHT...

* STRONG NORTHWESTERLY WINDS WILL DEVELOP TUESDAY MORNING IN THE

DEVILS LAKE BASIN...THEN SPREAD INTO THE RED RIVER VALLEY BY

TUESDAY AFTERNOON.

* WINDS FROM 30 TO 45 MPH WITH GUSTS OVER 55 MPH ARE POSSIBLE

TUESDAY INTO TUESDAY NIGHT. WINDS WILL SLOWLY SUBSIDE BY

WEDNESDAY MORNING.

* THESE STRONG WINDS WILL PRODUCE LARGE WAVES FROM 4 TO 7 FEET

ON DEVILS LAKE WHICH COULD CAUSE BEACH AND ROAD BED EROSION.

WAVES COULD WASH DEBRIS OVER LOW LYING ROADWAYS CREATING

HAZARDOUS TRAVEL.

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1-2 inches of wind driven rain possible also with the storm. Where's "cmichweather"...he still around?

He is, but he is looking to finish his M.S. this December, so he has been on much less lately (for good reason).

Devils Lake will be ground zero based on how far W this system will be bent-back. Should see 60-65 MPH wind gusts.

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win.

LONG TERM (THURSDAY NIGHT THROUGH MONDAY)...THE LONG TERM WILL BE CHARACTERIZED BY AN AMPLIFIED LONG WAVEPATTERN WITH A DEEP TROUGH CENTERED OVER THE GREAT LAKES...ASTRONG RIDGE OVER THE WESTERN CONUS...AND A VERY STRONG TROUGH OFFTHE ALASKAN COAST. LATE THURSDAY INTO FRIDAY WILL FIND THEFORECAST AREA IN THE WAKE OF A SHORT WAVE TROUGH WITH SUBSIDENCEALOFT AND DRY AIR IN THE LOW LEVELS. FROM THAT POINT ON...LONGTERM MODEL GUIDANCE IS IN GOOD AGREEMENT IN TERMS OF THE PLACEMENTOF THE RIDGE/TROUGH AXIS. THIS WOULD SUGGEST THAT THE BULK OFENERGY ASSOCIATED WITH THE TROUGH WILL REMAIN EAST OF THE FORECASTAREA AND THUS DRY WEATHER DOMINATES THE FORECAST. THE UPPER LEVELFLOW PATTERN WILL REMAIN MERIDIONAL THROUGH THE PERIOD WITH APERSISTENT NEUTRAL ADVECTION AND COOL AIR IN PLACE. WITH ALL OFTHIS SAID...THE LONG TERM PERIOD WILL BE CHARACTERIZED BY PLENTYOF SUN...HIGH TEMPS IN THE 70S...LOWS IN THE UPPER 40S AND 50S...AND DRY CONDITIONS.

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win.

LONG TERM (THURSDAY NIGHT THROUGH MONDAY)...THE LONG TERM WILL BE CHARACTERIZED BY AN AMPLIFIED LONG WAVEPATTERN WITH A DEEP TROUGH CENTERED OVER THE GREAT LAKES...ASTRONG RIDGE OVER THE WESTERN CONUS...AND A VERY STRONG TROUGH OFFTHE ALASKAN COAST. LATE THURSDAY INTO FRIDAY WILL FIND THEFORECAST AREA IN THE WAKE OF A SHORT WAVE TROUGH WITH SUBSIDENCEALOFT AND DRY AIR IN THE LOW LEVELS. FROM THAT POINT ON...LONGTERM MODEL GUIDANCE IS IN GOOD AGREEMENT IN TERMS OF THE PLACEMENTOF THE RIDGE/TROUGH AXIS. THIS WOULD SUGGEST THAT THE BULK OFENERGY ASSOCIATED WITH THE TROUGH WILL REMAIN EAST OF THE FORECASTAREA AND THUS DRY WEATHER DOMINATES THE FORECAST. THE UPPER LEVELFLOW PATTERN WILL REMAIN MERIDIONAL THROUGH THE PERIOD WITH APERSISTENT NEUTRAL ADVECTION AND COOL AIR IN PLACE. WITH ALL OFTHIS SAID...THE LONG TERM PERIOD WILL BE CHARACTERIZED BY PLENTYOF SUN...HIGH TEMPS IN THE 70S...LOWS IN THE UPPER 40S AND 50S...AND DRY CONDITIONS.

and if you hadn't had such an awful summer...this would make for great Autumn foliage...

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Guess where the cold front is.

Gosh I love FROPA.

Pretty impressive frontal circulation with wind gusts along the front in excess of 45 MPH.

Yeah that was pretty cool watching it on radar this morning. I'm loving this 67 degrees with 32 dewpoint.

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Yeah that was pretty cool watching it on radar this morning. I'm loving this 67 degrees with 32 dewpoint.

I know! NAM had us dropping the dews into the 20s later. That would be glorious.

That was honestly one of the fastest surging fronts I have seen in a while. It cleared Nebraska in a few hours.

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Looks like the storm has all but ended across eastern ND, with the exception of some gusty winds that should hang around for a good part of the day. Picked up 1.18" it looks like, with a max wind gust of 44mph. Winds were a bit lighter here than I originally expected, but still not bad. This was probably due to the low closing off a little earlier and further west than expected, not allowing the strong backside winds to move in until later when the gradient was decreasing.

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Another significant cold front expected to push through on Thursday. If the timing is right it may be pushing through in time for my 12Z balloon launch.

Otherwise a pretty classic fall front with the upper wave originating as a low amplitude wave of the BC/Alberta Rockies. It will be a pleasant and dry FROPA.

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Another significant cold front expected to push through on Thursday. If the timing is right it may be pushing through in time for my 12Z balloon launch.

Otherwise a pretty classic fall front with the upper wave originating as a low amplitude wave of the BC/Alberta Rockies. It will be a pleasant and dry FROPA.

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86 here right now....winds could be 40+ gusts here on thu behind the front.

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