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Mid May cold snap


Ginx snewx

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No, that is real...that airmass was just beyond ridiculous. Logan Airport obs I believe started in 1921.

Lots of all time records set at that time in SNE/MA. NYC touched -15 (my dad got frostbit ears while walking to school.) Only 12/30/17 with -13 comes close - next is the -8 on 2/15/43. However, it was less dramatic in NNE - only 3rd coldest that winter at Farmington/Bridgton, with 12/30-31 (when NYC hit -6) and 1/30-31 (apparently NNE-centric) recording colder mornings than 2/8-9.

Heavy frost at my place this morning. Temp bottomed out at 30 or 31, and all the moisture left over from yesterday made some pretty frost flowers on the Outback roof. I was surprised to get a frost this morning, but expect 27-28 tonight and another frost tomorrow night. I'm hoping the cooling stops north of 25, the point at/below which significant leaf and blossom kill is likely.

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We've finally scoured all the cold out of Canada after this , so this will be it until September.

 

 

Yeah, no cold air anywhere up north:

 

NORTHERN ALASKA FORECAST DISCUSSION

NATIONAL WEATHER SERVICE FAIRBANKS AK

549 AM AKDT MON MAY 13 2013

.DISCUSSION...

UPPER AIR...CLOSED LOW NORTH OF BETTLES WILL SLIDE NORTH ALONG THE

EAST SIDE OF A BROAD TROUGH COVERING ALL OF NORTHERN ALASKA. BY

TUE MORNING THE LOW WILL BE NORTH OF BARTER ISLAND. THE LOW WILL

CONTINUE MOVING RAPIDLY NORTH ON TUE. THE TROUGH WILL REMAIN OVER

NORTHERN ALASKA THROUGH THE END OF THE WEEK...THOUGH BY FRI IT IS

PROGGED TO BE A HIGHER AMPLITUDE TROUGH WITH AXIS NORTH TO SOUTH

OVER THE WEST COAST. THE MODELS ARE IN GENERAL AGREEMENT THROUGH

WED THEN THEY BEGIN TO DIVERGE.

NORTH SLOPE...A SLOW MOVING COLD FRONT EXTENDING SOUTH FROM

PRUDHOE BAY TO THE BROOKS RANGE AND THE INTERIOR WILL PICK UP

SPEED THIS AFTERNOON AS LOW PRESSURE STRENGTHENS TO 997 MB NORTH

OF BARTER ISLAND. AS THE LOW MOVES NORTH TONIGHT...THE FRONT WILL

MAKE RAPID PROGRESS EASTWARD TO MCKENZIE BAY. THE LOW WILL

GENERATE STRONG WEST WINDS ALONG THE BEAUFORT SEA COAST AND

ADJOINING MARINE AREAS MON NIGHT AS COLD AIR IS PULLED INTO THE

AREA. WINDS WILL DIMINISH BY TUE AFTERNOON AS THE LOW PICKS UP

SPEED AND MOVES NORTH AWAY FROM THE FORECAST AREA. MODELS

CURRENTLY FAVOR PUTTING THE GREATEST ACCUMULATIONS OF SNOW OVER

THE WESTERN BEAUFORT SEA COAST...WHILE THE EASTERN BEAUFORT SEA

COAST MAY HAVE THE HIGHEST WINDS. PRUDHOE BAY AND AREA COULD

EASILY ACCUMULATE 10 INCHES OF SNOW BEFORE IT DIMINISHES TUE

MORNING. THE EASTERN BEAUFORT SEA COAST WILL LIKELY HAVE LESS THAN

3 INCHES. THE BROOKS RANGE WILL GET 6 TO 12 INCHES WITH HEAVIEST

AMOUNTS FROM HOWARD PASS EAST AND FROM THE DALTON HIGHWAY WEST.

ONLY SCATTERED SNOW SHOWERS OR FLURRIES ARE EXPECTED FOR THE REST

OF THE NORTH SLOPE ZONES. ANOTHER LOW WILL INTENSIFY NEAR WRANGEL

ISLAND TUE...THEN TRACK TO NEAR CAPE LISBURNE WED AFTERNOON.

WEST COAST...HIGH PRESSURE RIDGE OVER SIBERIA WILL DRIFT SOUTH TO

BE OVER THE NORTHERN AND EASTERN BERING SEA TONIGHT. THE RIDGE

WILL PERSIST OVER THE EASTERN BERING SEA THROUGH TUE. THIS WILL

MEAN DRY WEATHER AND DIMINISHING WINDS FOR THE WEST COAST THROUGH

TUE. LOW PRESSURE DEVELOPING NEAR WRANGEL ISLAND ON TUE WILL

TRACK SOUTH TO BE OVER THE SOUTH CHUKCHI SEA WED NIGHT. A COLD

FRONT ASSOCIATED WITH THE LOW WILL EXTEND FROM CAPE KRUSENSTERN TO

NOME AND SOUTH OF SAINT LAWRENCE ISLAND LATE WED NIGHT.

INTERIOR...A COLD FRONT EXTENDING FROM THE BROOKS RANGE SOUTH OVER

FORT YUKON TO DELTA AND TO THE ALASKA RANGE WILL STALL OVER THE

SOUTHEAST INTERIOR THIS AFTERNOON...THEN DISSIPATE TUE NIGHT. THE

AIR BEHIND THE FRONT IS COLD FOR THIS TIME OF YEAR AND A FEW

RECORD LOWS AND RECORD LOW MAXS MAY BE RECORDED TODAY FOR THE

CENTRAL TO WEST INTERIOR. BETTLES SET A RECORD LOW FOR THE DATE

YESTERDAY SHORTLY BEFORE MIDNIGHT. FAIRBANKS MAY END UP WITH TWO

RECORD TEMPERATURES TODAY...ONE FOR THE LOW AND ANOTHER FOR THE

RECORD LOW-MAX TEMPERATURE. FOR THE EASTERN ALASKA RANGE...

UPSLOPING AND MOISTURE IS EXPECTED TO CAUSE HEAVY SNOW...IN

PARTICULAR ABOVE 2000 FEET AND WEST OF THE TOK CUTOFF. MODELS ARE

FORECASTING THE DEVELOPMENT OF SURFACE LOW PRESSURE IN THE YUKON

TERRITORY OF CANADA WHICH WILL STRENGTHEN UPSLOPING ALONG THE

NORTH SLOPES OF THE ALASKA RANGE.

 

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Just hit 50F at ORH at 986ft....53F at BDL.

Not hard to believe 50F at over 800ft in between those two spots.

 

 

So Tolland had the same temp as BDL at 1pm on a cold air advection day? We'll have to keep that in mind when winter comes around and we question an obs.

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So argumentative and nasty. Hopefully the mods take action against this behavior. This is exactly the problem here

 

 

I am sick and tired of being attacked by you over what my temperature is, you seem to think that everyone elso has to have a warmer temp than you do at 1,000'. You have been doing this since April and it's getting to the point where I don't want to post here anymore.

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So Tolland had the same temp as BDL at 1pm on a cold air advection day? We'll have to keep that in mind when winter comes around and we question an obs.

lol, I did smirk when I saw it matched BDL and not ORH. But it is warm season in Tolland ;) However this is a day with steep lapse rates so there should be a decent decrease with elevation...especially with valley sun and more cloudiness over the hills.

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lol, I did smirk when I saw it matched BDL and not ORH. But it is warm season in Tolland. However this is a day with steep lapse rates so there should be a decent decrease with elevation.

 

Right, which is why I mentioned the CAA. Usually CAA days (like today) have a well mixed atmosphere which produces our largest elevation gradient in temps.

 

Days like today will sometimes be 7-9F colder in ORH vs BOS.

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I am sick and tired of being attacked by you over what my temperature is, you seem to think that everyone elso has to have a warmer temp than you do at 1,000'. You have been doing this since April and it's getting to the point where I don't want to post here anymore.

You joined this board simply to troll me. I'd like you to find one post where I attacked you. Calm down , breathe deep and count to 10. Life is too short for this type of behavior
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This is the type of day though where local stations could go upand down quite a bit depending on cloud cover. Any breaks in the clouds could spike temps a bit locally with the strong sun angle.

 

 

Yeah temperature can differ for those exact reasons, some people fail to see that.

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You joined this board simply to troll me. I'd like you to find one post where I attacked you. Calm down , breathe deep and count to 10. Life is too short for this type of behavior

 

 

I could care less about you actually. I joined this board beacuse Accuweather chat does not really cover this area. If anything I have been a balancing element for this area. And please don't tell me how to act or live my life.

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This is the type of day though where local stations could go upand down quite a bit depending on cloud cover. Any breaks in the clouds could spike temps a bit locally with the strong sun angle.

 

I was noticing that.  There 2-3° differences between stations depending on if the sun is out with the cloud cover.

 

56 here now and only 58 for the high on the day. Impressive chill for 5/13 with a good amount of valley sun and downsloping WSWly flow. 

 

My digital thermometer is reading 56° off a high so far of 59°.  The 56° seems more reasonable to me but who knows...I just don't trust the digital sensor.  Whatever it is, temps are 15 or so degrees below normal today.

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Right, which is why I mentioned the CAA. Usually CAA days (like today) have a well mixed atmosphere which produces our largest elevation gradient in temps.

Days like today will sometimes be 7-9F colder in ORH vs BOS.

Yeah I notice it when up here its like below freezing at the summits but near 50F in the valleys, with like a 20F decrease over 3-4,000ft. You probably see even steeper boundary conditions with the downslope onto the coastal plain from ORH.
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