Wednesday 25 December 2013

US temperature anomalies

Record high temperatures in New York, Philadelphia – Washington D.C. ‘about 40 degrees warmer than normal’

23 December, 2013

By Victoria Cavaliere and Edith Honan in New York, Tim Ghianni in Nashville, and Kevin Murphy in Kansas City, Missouri; editing by G Crosse
23 December 2013

(Reuters) – A band of severe weather from tornadoes to icy blasts left at least seven people dead as winter storms and severe weather pushed up the East Coast on Sunday, bringing record high temperatures to Philadelphia and New York City but ice storms to parts of New England.

The eastern half of the country was getting a "plethora of winter weather" just days before the Christmas holiday, according to the National Weather Service.

"This storm is bringing a little bit of everything, from rain, flooding and wind, to ice and snow in some areas," said NWS meteorologist Bruce Sullivan. "What is really extraordinary about this system, though, is the warm air."

The system is expected to linger over the East Coast until Monday, snarling road and airline travel for millions of people during one of the busiest travel periods of the year. Major airports in Philadelphia and New York City were experiencing delays Sunday because of wind and visibility, according to the Federal Aviation Administration.

Hundreds of flights across the United States were canceled on Sunday, according to the aviation tracking site, flight website.

The unusual storm system brought a brief winter heat wave to northeastern cities with Philadelphia and New York City logging record high temperatures on Saturday and Sunday.

The temperature in New York's Central Park topped out at 71 degrees on Sunday, breaking a 1998 record of 63 degrees, the weather service said. The temperature had reached 65 degrees in Central Park on Saturday, breaking a 2011 record of 62 degrees. Temperatures in Philadelphia reached a record 68 degrees on Sunday.

In Washington D.C., the temperature was hovering "about 40 degrees warmer than normal," Sullivan added.

Farther north, in upstate New York, Vermont, New Hampshire and Maine were pummeled by an ice storm after the warm air hit an arctic layer, he said. [more]

Impressive Storm System Finally Exits U.S.

By Christopher C. Burt
23 December 2013

( – The large and complex winter storm system designated ‘Gemini” by The Weather Channel has loosened its grip over the U.S. following three days of wild weather. Most impressive were the rain totals and warmth that proceeded the storms frontal passage across the central and eastern portions of the country. Here is a brief summary of some of the highlights.

A plume of moisture ahead of the storm’s cold front reached near record values so far as precipitable content is concerned.

This was manifested by some extraordinary rainfall totals. Flooding killed five in Kentucky where Paducah experienced its greatest December calendar day rainfall on record. Here were the top figures by state:

10.24” INDIANA: Willimas 1.9 N
9.57” ILLINOIS: Belknap 11.1 ESE
7.92” ARKANSAS: Carlisle 3.3 W
7.60” ALABAMA: Excel 2.5 ESE
6.56” TENNESSEE: Dyersburg 4.5 W
6.25” NORTH CAROLINA: Lake Towaway 3.2 ENE
5.76” SOUTH CAROLINA: Greenwood 5 W
5.61” GEORGIA: McDonough and Woolsey
5.54” MISSOURI: Dexter 2.3 W
5.37” KENTUCKY: Paducah
5.12” OHIO: Castine
4.73” NEW YORK: Tonawanda 2.6 ESE
3.39” MISSISSIPPI: 3.39” Pass Christian 5 N
3.25” VIRGINIA: Meadows of Dan 4.5 SW
2.99” PENNSYLVANIA: North East 1.2 WNW
2.92” LOUSISIANA: Shreveport
2.67” VERMONT: Derby Center 1.8 NW […]
Along with the rainfall, the most impressive feature of the storm system was the amazing warm temperatures that preceded the frontal passage on December 21-22. From Florida to New York daily and, in some cases, monthly heat records were broken. There are too many to list all, so here is a selection:


Norfolk, Virginia: 81° on 12/22 (old record 80° on 3 occasions)

Augusta, Georgia: 83° on 12/21 (old 82° on 8 occasions)

Savannah, Georgia: 83° on 12/22 (ties 5 other occasions)

Jacksonville, Florida: 84° on 1/22 (ties 9 other occasions—including twice before this month)


63° Binghamton, NY
70 ° Harrisburg, PA (set at 6 a.m.)
82° Tampa, FL
73° Knoxville, TN (set at 4 a.m.)
72° Chattanooga, TN
73° Bristol, TN
64° Canton, OH (set at midnight )
72° Pittsburgh, PA
70° New York City, Central Park,
71° Newark, NJ
64° Hartford, CT
63° Worcester, MA
72° Washington, DC
64° Providence, RI
86° Orlando, FL
71° Atlanta, GA
78° Raleigh, NC
68° Philadelphia, PA
76° Richmond, VA
71° Atlantic City, NJ
67° Wilmington, DE

One aspect that was interesting was how cold air was trapped in the valleys of New York as warm air just aloft caused temperatures to vary buy as much as 35° over an elevation of just 500-1000’. [more]

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