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May observations and discussions...


ag3

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After today (27th) most sites running between 2 and 4 above normal for the month..

EWR: +2.7

NYC: +1.7

LGA: +2.2

JFK: +1.9

TTN: +5.2

We can't seem to break the warm trend, and now I don't think we'll do it this summer either. Crazy stuff.

Considering we've seen Mem day weekends in the 50s before, this weekend is quite anomalous and July like in terms of the humidity especially.

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We can't seem to break the warm trend, and now I don't think we'll do it this summer either. Crazy stuff.

Considering we've seen Mem day weekends in the 50s before, this weekend is quite anomalous and July like in terms of the humidity especially.

Amazing even with so many cloudy days this month we're heading towards yet another very warm month on whole for the east. If we can get into enough sun tomorrow i think we see the first 90s for several stations, perhaps tues as well. Looks like we'll build those positive departures through wed.

Some other stations

ALB: +4.3

ISP : +3.0

MTP: +3.1

PHL: +3.6

ABE: +5.6

BWI: +5.5

DCA: +5.0

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and its going to the south of us. the gfs had .75 inches through now, and there is nothing.

CTZ009-NYZ071-280230-

SOUTHERN FAIRFIELD-SOUTHERN WESTCHESTER-

951 PM EDT SUN MAY 27 2012

...STRONG THUNDERSTORM WILL IMPACT FAIRFIELD AND WESTCHESTER

COUNTIES...

AT 942 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A

STRONG THUNDERSTORM NEAR WHITE PLAINS...AND MOVING EAST AT 15 MPH.

THIS STORM WILL BE...

NEAR HARRISON BY 955 PM.

NEAR PORT CHESTER BY 1005 PM.

NEAR STAMFORD BY 1025 PM.

NEAR DARIEN BY 1030 PM.

SMALL HAIL IS EXPECTED WITH THIS STORM. IN ADDITION...VERY HEAVY

RAIN...WITH RAINFALL RATES OF 1 TO 2 INCHES PER HOUR...COULD CAUSE

PONDING OF WATER ON ROADWAYS... AND MINOR POOR DRAINAGE FLOODING.

LIGHTNING IS ONE OF NATURES NUMBER ONE KILLERS. REMEMBER...IF YOU CAN

HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE STRUCK BY LIGHTNING. MOVE

TO SAFE SHELTER IMMEDIATELY.

LOL just as bad on the weather side as the sports side.

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CTZ009-NYZ071-280230-

SOUTHERN FAIRFIELD-SOUTHERN WESTCHESTER-

951 PM EDT SUN MAY 27 2012

...STRONG THUNDERSTORM WILL IMPACT FAIRFIELD AND WESTCHESTER

COUNTIES...

AT 942 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A

STRONG THUNDERSTORM NEAR WHITE PLAINS...AND MOVING EAST AT 15 MPH.

THIS STORM WILL BE...

NEAR HARRISON BY 955 PM.

NEAR PORT CHESTER BY 1005 PM.

NEAR STAMFORD BY 1025 PM.

NEAR DARIEN BY 1030 PM.

SMALL HAIL IS EXPECTED WITH THIS STORM. IN ADDITION...VERY HEAVY

RAIN...WITH RAINFALL RATES OF 1 TO 2 INCHES PER HOUR...COULD CAUSE

PONDING OF WATER ON ROADWAYS... AND MINOR POOR DRAINAGE FLOODING.

LIGHTNING IS ONE OF NATURES NUMBER ONE KILLERS. REMEMBER...IF YOU CAN

HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE STRUCK BY LIGHTNING. MOVE

TO SAFE SHELTER IMMEDIATELY.

LOL just as bad on the weather side as the sports side.

its after 00Z. GFS had a lot of rain for everyone before this. never happened.

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its after 00Z. GFS had a lot of rain for everyone before this. never happened.

GFS tends to exaggerate rain totals in cases like this one when compared to the other models and the actual results. The NAM correctly kept most of the activity to the south/west.

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GFS tends to exaggerate rain totals in cases like this one when compared to the other models and the actual results. The NAM correctly kept most of the activity to the south/west.

yes, that was the point, several posters were humping he gfs and calling for a rainout before 00z yesterday.

The new GFS has real precip issues.

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We can't seem to break the warm trend, and now I don't think we'll do it this summer either. Crazy stuff.

Considering we've seen Mem day weekends in the 50s before, this weekend is quite anomalous and July like in terms of the humidity especially.

Been a long warm trend - NYC is about to break a record on June 30 that will never be broken again - heating degree days July 2011 - through today stands at 3700 - the record is 3887 set in 2001 -2002 - going to break that one by a wide margin..........

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NYC monthly temperature departures since 1/10:

5/12 so far....+1.7

4/12.............+1.8

3/12.............+8.4

2/12.............+5.6

1/12.............+4.7

12/11..........+5.8

11/11..........+4.2

10/11..........+0.2

9/11............+2.0

8/11............+0.1

7/11............+3.7

6/11............+1.1

5/11............+1.9

4/11............ +1.8

3/11.............-0.2

2/11.............+1.4

1/11.............-2.4

12/10...........-4.5

11/10...........+0.8

10/10...........+1.5

9/10.............+3.6

8/10.............+2.3

7/10.............+4.8

6/10.............+3.4

5/10.............+2.7

4/10.............+5.4

3/10.............+5.7

2/10.............-1.5

1/10.............+0.4

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yes, that was the point, several posters were humping he gfs and calling for a rainout before 00z yesterday.

The new GFS has real precip issues.

One of the last upgrades to the GFS last year really reduced the grid scale bombs it had issues with. With this latest update, only the initialization was updated. The model itself was not. Talking to some ppl at HPC, they said that they found a return to some of the grid scale bombs with this latest update, however, that will be short lived because they will go back and adjust the model so that the problem becomes less problematic. In environments like this, a model can go a little nuts with precip due to convection. That is what the gfs had done yesterday. It doesnt have to show a ton of rain for it to be feedback tho. It can be weaker, but still there. I think soon enough, they will have the issue fixed and we will just have to use caution with the model up until that point.

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If you notice the degrees above average are beginning to decline since the obscene 8.4 above peak in March ( when is the last time there was a departure that large in either direction) - La Nina peaked and now we are going neutral into El Nino so one would assume the streak of above average will end soon and we will get a few below normal months maybe just in time for next winter....

NYC monthly temperature departures since 1/10:

5/12 so far....+1.7

4/12.............+1.8

3/12.............+8.4

2/12.............+5.6

1/12.............+4.7

12/11..........+5.8

11/11..........+4.2

10/11..........+0.2

9/11............+2.0

8/11............+0.1

7/11............+3.7

6/11............+1.1

5/11............+1.9

4/11............ +1.8

3/11.............-0.2

2/11.............+1.4

1/11.............-2.4

12/10...........-4.5

11/10...........+0.8

10/10...........+1.5

9/10.............+3.6

8/10.............+2.3

7/10.............+4.8

6/10.............+3.4

5/10.............+2.7

4/10.............+5.4

3/10.............+5.7

2/10.............-1.5

1/10.............+0.4

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mcd0937.gif

MESOSCALE DISCUSSION 0937

NWS STORM PREDICTION CENTER NORMAN OK

1019 AM CDT MON MAY 28 2012

AREAS AFFECTED...S CNTRL AND SERN NY...NERN PA...NRN NJ...SRN NEW

ENGLAND

CONCERNING...SEVERE POTENTIAL...WATCH POSSIBLE

VALID 281519Z - 281615Z

PROBABILITY OF WATCH ISSUANCE...40 PERCENT

SUMMARY...POORLY ORGANIZED MCS OVER CNTRL NY MAY BECOME MORE

ORGANIZED AND CONTINUE TO PROGRESS ESEWD. SMALL BOWING SEGMENTS AND

SUPERCELLS WITHIN THE BROADER CIRCULATION WILL BE CAPABLE OF DMGG

WINDS AND LARGE HAIL LATER THIS AFTERNOON.

DISCUSSION...A WEAK UPPER WAVE OBSERVED ON 15Z WV IMAGERY OVER W

CNTRL NY APPEARS TO HAVE EMANATED FROM SRN MN 24 HRS AGO. THE SUBTLE

WAVE HAS PROVIDED SUFFICIENT FORCING FOR ASCENT FOR THE DEVELOPMENT

OF A CURRENTLY ELEVATED COMPLEX OF STORMS...NOW ORIENTED ACROSS

CNTRL NY. 15Z SURFACE ANALYSIS PLACES A WAVY STATIONARY FRONT FROM

SRN NEW ENGLAND TO APPROXIMATELY BUFFALO...AND SHOULD SERVE AS A

FOCUS FOR CONVECTIVE DEVELOPMENT/SUSTENANCE THIS AFTERNOON. WITH THE

PERSISTENCE OF A BROADER ERN UPPER RIDGE...WELL ABOVE NORMAL HIGH

TEMPERATURES FORECAST IN THE UPPER 80S TO LOWER 90S F AND A

LINGERING MOIST AIR MASS /CHARACTERIZED BY DEW POINTS IN THE MID TO

UPPER 60S F/ WILL ERODE REMAINING CONVECTIVE INHIBITION AND

CONTRIBUTE TO MODERATE INSTABILITY. MODEL FORECASTS SUGGEST NEAR

SURFACE-BASED CONVECTION IS POSSIBLE IN THE 17-18Z PERIOD...WITH A

SUBSEQUENT INCREASE IN DMGG WIND POTENTIAL LATER THIS AFTERNOON AS

LOW-LEVEL LAPSE RATES CONTINUE TO STEEPEN. THE 12Z BUFFALO SOUNDING

REFLECTS AN EWD ADVECTION OF THE EML...WITH STEEP MID-LEVEL LAPSE

RATES NEAR 7 C/KM. WITH STRONGER MID-LEVEL WINDS AROUND THE

PERIPHERY OF THE RIDGE...OCCASIONALLY ROTATING STORMS AND

SEMI-ORGANIZED BOWING SEGMENTS CAPABLE OF LARGE HAIL AND DMGG WINDS

WILL BE POSSIBLE AS SURFACE-BASED STORMS DEVELOP LATER TODAY.

..HURLBUT/CARBIN.. 05/28/2012

ATTN...WFO...BOX...OKX...ALY...PHI...BGM...

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