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1/26/2011 Snow Bomb - One Year Later


Thunder Road

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This was a rather impressive and dynamic system. The WAA shot on the front end was impressive and produced more snow than what was forecast. We actually had this storm as one of our winter weather training sessions for this season. The RUC actually had stronger frontogenetic forcing and WAA farther north than say the NAM/GFS, which turned out to be right. Figured I would add some of our text products that were issued as a review.

SPECIAL WEATHER STATEMENT

NATIONAL WEATHER SERVICE MOUNT HOLLY NJ

1052 PM EST WED JAN 26 2011

DEZ001-MDZ008-NJZ008>010-012-013-015>021-027-PAZ067>071-270530-

NEW CASTLE-CECIL-MORRIS-HUNTERDON-SOMERSET-MIDDLESEX-

WESTERN MONMOUTH-MERCER-SALEM-GLOUCESTER-CAMDEN-

NORTHWESTERN BURLINGTON-OCEAN-CUMBERLAND-SOUTHEASTERN BURLINGTON-

CHESTER-MONTGOMERY-BUCKS-DELAWARE-PHILADELPHIA-

INCLUDING THE CITIES OF...WILMINGTON...ELKTON...MORRISTOWN...

FLEMINGTON...SOMERVILLE...NEW BRUNSWICK...FREEHOLD...TRENTON...

PENNSVILLE...GLASSBORO...CAMDEN...CHERRY HILL...MOORESTOWN...

MOUNT HOLLY...JACKSON...MILLVILLE...WHARTON STATE FOREST...

WEST CHESTER...NORRISTOWN...DOYLESTOWN...MEDIA...PHILADELPHIA

1052 PM EST WED JAN 26 2011

...AN AREA OF HEAVY SNOW WITH ISOLATED THUNDER CONTINUES TO

POUND THE REGION...

AT 1050 PM, NATIONAL WEATHER SERVICE DOPPLER RADAR ALONG WITH

SURFACE REPORTS CONTINUES TO TRACK AN AREA OF MODERATE TO HEAVY

SNOW ALONG THE INTERSTATE 95 CORRIDOR. THIS AREA IS GRADUALLY

SHIFTING MORE INTO NEW JERSEY. THE SNOWFALL RATES WITHIN THIS AREA

ARE MOSTLY BETWEEN 1 TO 2 INCHES PER HOUR. RECENT SPOTTER REPORTS

INDICATED THAT IN THE MOST INTENSE PART OF THE BAND, SNOWFALL

RATES HAVE REACHED 3 INCHES PER HOUR. THESE RATES WILL

SIGNIFICANTLY REDUCE THE VISIBILITIES TO ONE HALF OF A MILE OR

LESS. IN ADDITION, THESE ENHANCED SNOWFALL RATES WILL CONTINUE TO

MAKE IT VERY DIFFICULT FOR PLOWING CREWS AS ACCUMULATIONS ARE VERY

QUICK. NORTHERLY WINDS 15 TO 25 MPH WITH GUSTS TO UP 35 MPH WILL

CAUSE SOME BLOWING SNOW ESPECIALLY ACROSS OPEN AREAS.

ROADWAYS CONTINUE TO BE VERY HAZARDOUS ACROSS THE AREA. THE

ENHANCED BAND OF HEAVY SNOW WILL GRADUALLY PIVOT FROM WEST TO

EAST THROUGH THE REMAINDER OF THE EVENING AND INTO THE OVERNIGHT

HOURS. IT IS BEST TO STAY INDOORS AND NOT TO TRAVEL UNLESS IT IS

ABSOLUTELY NECESSARY.

AREA FORECAST DISCUSSION

NATIONAL WEATHER SERVICE MOUNT HOLLY NJ

1011 PM EST WED JAN 26 2011

.SYNOPSIS...

LOW PRESSURE ALONG THE MID ATLANTIC COAST WILL INTENSIFY AND MOVE

NORTHEAST OVERNIGHT, REACHING THE CANADIAN MARITIMES THURSDAY. WEAK

HIGH PRESSURE WILL BUILD INTO THE REGION THURSDAY BUT WILL BE

REPLACED BY SEVERAL WEAK CLIPPER SYSTEMS DROPPING DOWN FROM THE

NORTHWEST FRIDAY THROUGH SATURDAY. HIGH PRESSURE WILL RETURN LATER

IN THE WEEKEND.

&&

.NEAR TERM /UNTIL 6 AM THURSDAY MORNING/...

THE WATER VAPOR IMAGERY SHOWS A RATHER IMPRESSIVE CLOSED LOW JUST

EAST OF THE DELMARVA AT 03Z. THERE IS TREMENDOUS LIFT ON THE NORTH

AND NORTHWEST SIDE OF THIS FEATURE WITH A RIBBON OF VERY STRONG

FRONTOGENETIC FORCING LINING UP FROM NEAR KNYC TO KPHL THEN BACK

INTO NORTHERN DELAWARE. STRENGTHENING CONVERGENCE IS ALLOWING THE

LARGE AREA OF MODERATE TO HEAVY SNOW ALONG THE I-95 CORRIDOR TO

BECOME ENHANCED MORE FROM NEAR HUNTERDON COUNTY NEW JERSEY TO

PHILADELPHIA TO NEW CASTLE COUNTY DELAWARE. RADAR IMAGERY OVER THE

LAST HOUR HAS INDICATED THIS AREA IS INTENSIFYING. SNOWFALL RATES

IN THIS BAND MAY NEAR 3 INCHES PER HOUR FOR A TIME AS UPWARD

VERTICAL MOTION BECOMES EVEN DEEPER WITHIN THE DENDRITIC SNOW

GROWTH ZONE. THERE CONTINUES TO BE AN OCCASIONAL CLOUD TO GROUND

LIGHTNING STRIKE DETECTED ALONG OR NEAR THIS FEATURE. WE WILL

WATCH THIS FEATURE AS AN ADDITIONAL UPWARD ADJUSTMENT IN SNOWFALL

TOTALS MAY BE REQUIRED.

THE GUSTY NORTHERLY WINDS IS PRODUCING SOME BLOWING SNOW AS WELL

WHICH IS REDUCING THE VISIBILITIES EVEN MORE. THE ENHANCED

SNOWFALL RATES WILL MAKE IT MORE DIFFICULT FOR PLOW CREWS TO KEEP

UP. WE WILL ADJUST THE GRIDS DURING THE NEXT HOUR OR SO BASED ON

TRENDS AND SOME NEWER MODEL GUIDANCE.

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I recall this storm as I was paintently waiting for the front to clear, rain to transition to sleet, and then once it finally turned to snow, 1 hour of light snow showers. Best dynamics missed us to the north. It was painful to read all the texts from my friends up north "dude, thundersnow!".

Yeah, your area was one of a small portion of the region that did not get much from this storm. At least it snowed though.

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Yeah, your area was one of a small portion of the region that did not get much from this storm. At least it snowed though.

I really did not expect much from that event. NWS never gave us more than 1-2" on our point/click. It was facinating to see the temps crash during the late afternoon and the very loud clink of sleet on the NW side of the house. Since i have moved here from Morris county, i do not expect much snow and try to enjoy what we do receive. Keep up the great work!

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One of my top 5 favorite storms I can remember. The Lehigh Valley was on the edge of the gradient in all the forecasts under 48 hours. The day of the storm, at about 2 pm, I looked at the radar and thought "Yeah...there's no way the heavy stuff is gonna miss us." After 2 inches from the overperforming first wave and a few hours of solid 1-3"/hr rates, we ended up with around 11 inches in Allentown. The January of moderate snow events went out with a bang.

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Nothing tops jan.'96 for me yet.

Feb.'06 was better for me than last year except for one thing.

Went to bed around 11pm had <1".

Woke up middle of the night and flipped on the back flood lights.

It was like looking at a white sheet of paper.

6:30am had 18".

Bad part was i slept through the heavy stuff.

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Nothing tops jan.'96 for me yet.

Feb.'06 was better for me than last year except for one thing.

Went to bed around 11pm had <1".

Woke up middle of the night and flipped on the back flood lights.

It was like looking at a white sheet of paper.

6:30am had 18".

Bad part was i slept through the heavy stuff.

Not even February 2010 tops Jan 1996? Impressive.

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Not even February 2010 tops Jan 1996? Impressive.

Thunder Road is right. Whereas some of the storms in the 2010 season were quite epic, you have to also realize the incredibly tight gradients. While most Bucks County south could have seen 12+", most of us up here got 5 - 7" and the gradient would only thin out the more north you got.

I felt bad for PSU that winter...lol

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Not even February 2010 tops Jan 1996? Impressive.

Jan 96 was epic. I Remember speaking with my brother in-law asking him if it was still supposed to snow the Friday before the storm. His expression on his face explained it all. It just wouldn't stop snowing. Someone from churchville pa, posted a pic with I believe your reply chrisL mentioning your wonderment.

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As for 1-26-11 .......that was suppossed to be a Lehigh Valley special. I probably had 12"-13" here from that, but seeing places that had been having mixed precipation end up with more left a bad taste in my mouth! Now the 12~13" from OCTOBER 29, 2011...... :) (yes expectations make and break storms for many of us, don't they?!)

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