April 22-May 1 Mid Atl/NE Cold Spell, Unseasonably chilly air may be with us for a while. Options

[bingobobbo]

I wanted to start a thread for the unseasonable chill that we have experienced here in the Northeast, rather than simply posting in the latest storm thread and long-range spring 2012 thread. Here in Binghamton, NY, we may be looking at our first daily record low temperature since June 30, 2010 by this weekend (the only record low all decade to date was that one in June 2010).

[psu1313]

I wanted to start a thread for the unseasonable chill that we have experienced here in the Northeast, rather than simply posting in the latest storm thread and long-range spring 2012 thread. Here in Binghamton, NY, we may be looking at our first daily record low temperature since June 30, 2010 by this weekend (the only record low all decade to date was that one in June 2010).

Down here in the Southern Mid Atlantic, temps were about normal yesterday and should get there today if the sun finds its way out. A little cooler for the weekend and then it looks like Spring/Summer rearrives in the middle of next week.

[Fire/Rescue]

Down here in the Southern Mid Atlantic, temps were about normal yesterday and should get there today if the sun finds its way out. A little cooler for the weekend and then it looks like Spring/Summer rearrives in the middle of next week.

Agreed...hopefully all pans out as antisipated and this will end up being the last weeked of "Chilly" weather, because it's time for sustained "Warm" weather baby

[Mike W IN herkim...]

Some cold nights ahead!!

Friday Night: Widespread frost after midnight. Otherwise, partly cloudy, with a low around 26. Breezy, with a west wind between 13 and 21 mph.

Saturday Night: Widespread frost after 2am. Otherwise, partly cloudy, with a low around 26

Sunday Night: Widespread frost after 2am. Otherwise, mostly clear, with a low around 27

http://forecast.weather.gov/MapClick.php?C...74.9644&e=0

[NorEaster07]

Eating an apple while walking around with smell of firewood in the air. Feels like Fall.

Here's how the daily data looks for Hartford & Bridgeport, CT last 4 days. Today should look similar. Kinda surprised the night lows are more normal but the day highs are below.



This post has been edited by NorEaster07: Apr 26 2012, 04:12 PM

[NorEaster07]

Freeze Watches & Warnings Out.

Here's the alert For Interior Southern CT

355 AM EDT FRI APR 27 2012

* HAZARDS...HARD FREEZE.

* TEMPERATURES...DROPPING INTO THE MID 20S.

* TIMING...BETWEEN 2 AM EDT AND 8 AM EDT SATURDAY.

[NorEaster07]

Upton

COLD AIR CONTINUES TO FILTER IN...AND BASED ON A MAV/NAM
MOS BLEND...HAVE CONVERTED THE FREEZE WATCH THAT HAD BEEN POSTED TO
A FREEZE WARNING...ADDING A FEW ADJACENT ZONES WHERE CONFIDENCE WAS
HIGH ENOUGH. HAVE ALSO GONE WITH A FREEZE WATCH FOR TONIGHT FOR THE
ZONES THAT ARE MORE QUESTIONABLE. MOS HAS TRENDED COLDER...SO WILL
ALLOW DAY SHIFT TO SEE IF THIS TREND CONTINUES AND UPGRADE TO
WARNINGS IF NECESSARY. LEFT OUT ANY MENTION OF FROST AS DEWPOINT
DEPRESSIONS AND WINDS DO NOT FAVOR FROST FORMATION

Albany

A WIDESPREAD HARD FREEZE IS EXPECTED ACROSS THE ENTIRE AREA TONIGHT
INTO SATURDAY MORNING...AND THUS A FREEZE WARNING HAS BEEN ISSUED
FOR ALL ZONES WHERE THE GROWING SEASON IS UNDER WAY. WHAT WILL NOT BE TYPICAL FOR THIS TIME OF YEAR IS THAT USUALLY WHEN TEMPS DROP
INTO THE 20S IN LATE APRIL IT IS DUE TO RADIATIONAL COOLING...BUT
TONIGHT THERE WILL BE A PERSISTENT BREEZE SO WHAT WILL BE
EXPERIENCING IS ADVECTIVE SUB-FREEZING TEMPS.

SATURDAY WILL BE BREEZY...BUT NOT AS WINDY AS FRIDAY DUE TO A WEAKER PRESSURE
GRADIENT. AFTER A COLD START TO THE DAY...TEMPS WILL WARM REASONABLY
WELL DUE TO STRONG LATE APRIL SUN ANGLE BUT WILL STILL END UP AROUND
5-10 DEGREES BELOW NORMAL

This post has been edited by NorEaster07: Apr 27 2012, 05:43 AM

[NorEaster07]

These are current wind chill temps.

[Mike W IN herkim...]

Getting a light snow/sleet shower with a temp of 34..

[NorEaster07]

Current temps with current 850mb temps overlayed. Sub 20s have entered into CT at 4000'.



This post has been edited by NorEaster07: Apr 27 2012, 05:14 PM

[NorEaster07]

Someone check this later and let us know what its reading after midnight.

Right now its 12 degrees on Mt. Washington, NH with windchill of 17 below.

http://www.mountwashington.org/weather/conditions.php

[bingobobbo]

As of 8 PM, it is 34 degrees at the Greater Binghamton Airport. We only have to drop six degrees to reach the record low for today (28 in 2002) and tomorrow (28 in 2004). Our 22-month record low temperature drought may be over very soon. (BTW, our longest record high temperature drought was 15-plus months, from Oct. 31, 2003 to Feb. 6, 2005).

[NorEaster07]

Some minimum Record Temps for 4/28:

Bridgeport, CT: 33 in 1972
Central Park, NY: 34 in 1934 and 1874
Hartford, CT: 29 in 1972
Worcester, MA: 24 in 1933
Burlington, VT: 24 in 1947
Albany, NY: 25 in 1947

[NYCSuburbs]

Somehow it's almost May and we have this:

[psu1313]

Somehow it's almost May and we have this:

Washington DC's record low at DCA is 38 and we've got a shot. It's currently 54 as we've dropped off a tad slower than it could have but that should speed up in the next hour or two. Further north where the core of the cold air is..yikes!!

[NorEaster07]

Upton

SHORT TERM /8 PM THIS EVENING THROUGH SATURDAY NIGHT/...
CHALLENGE TNGT IS AMOUNT OF DECOUPLING AND RESULTANT LOW TEMPS.
ACROSS THE INTERIOR...THE LATEST DATA SUPPORTS THE PREV FCST SO
LITTLE CHANGE MADE. ACROSS THE E...MODEL DATA SUPPORTS THE COOL
REGIME...BUT THIS WILL NOT PLAY OUT IF WINDS DON/T DIMINISH
ENOUGH. HAVE LEANED TOWARDS WINDS DIMINISHING SUFFICIENTLY NEAR
THE COASTS LATE TNGT TO SUPPORT NEAR FREEZING TEMPS. DROPPED THE
TEMP TREND LATER THAN THE NORMAL DIURNAL CURVE HOWEVER. THE FREEZE WATCH HAS THEREFORE BEEN CONVERTED TO A WRNG. INTERIOR ZONES RUN
THE GREATEST RISK OF A TRUE HARD FREEZE.

HOWEVER...IF WINDS DO NOT LOWER ESPECIALLY OVER COASTAL AND EASTERN SECTIONS TOWARDS LATE THIS EVENING...LOW TEMPS MAY NEED TO BE CHANGED WITH LOWS MORE IN THE
MID 30S INSTEAD OF LOW 30S ON AVERAGE. INTERIOR ZONES EXPECTED TO
DROP INTO UPPER 20S ON AVERAGE...MAKING FOR A HARD FREEZE

[NorEaster07]

Hartford/Bridgport Daily Reports past 6 days. Yesterday Hartford was 12 degrees Below normal for the high.



Current U.S Temps




Closeup of Current Temps in NorthEast and Mt. Washington OBS. (Wind Chill of 30 below zero)

This post has been edited by NorEaster07: Apr 28 2012, 05:41 AM

[bingobobbo]

We had our first daily record low temperature since June 2010, when the minimum reached 26 degrees. In addition, it was our coldest day this late in the spring since the late 1970s. We have a chance at record lows both tomorrow and Monday morning, which means we may be looking at our first multi-record low month since July 2009, which coincided with our Adirondack vacation.

[bingobobbo]

We can put an end date on this cool spell--May 1 would be the end date. BTW, if we end up having a similar length of time between record lows as the one between June 30, 2010 and today, we will have to wait until Feb. 25, 2014. LOL! 2011 was the first year in history with no record low temperatures in our area.

[NorEaster07]

We might see a return of the trough in East as models starting to hint.

I'm starting to believe the "normal" or "slightly" above normal temps later this week will be temporary.

Euro has 12z 850 Temp anomalies May 8th.


GFS 850 Anomalies. May 9th-May13th


Waiting for this to update but PNA might be negative for just a few days and NAO positive for a few.