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NATIONAL WEATHER SERVICE CLEVELAND OH
655 AM EDT TUE JUN 25 2013
IF I DID NOT KNOW ANY BETTER I WOULD SWEAR WE ARE HEADED BACK INTO A WINTER PATTERN AND YET IT IS SUMMER. THE UPPER LEVEL PATTERN IS TRENDING BACK TOWARD SOME MAJOR AMPLIFICATION OF THE RIDGE IN THE WESTERN UNITED STATES. TYPICALLY WHEN THIS HAPPENS...A DEEP DIGGING TROUGH DEVELOPS OVER THE EASTERN UNITED STATES SENDING THE POLAR JET STREAM WELL SOUTH INTO THE SOUTHERN STATES. THE OTHER ISSUE AT HAND IS THE DEVELOPMENT OF THE UPPER LEVEL LOW OVERHEAD THAT REMAINS NEARLY STATIONARY THROUGH THE END OF THE FORECAST PERIOD.
AN UPPER LEVEL PATTERN LIKE THIS WILL CONTINUE TO ROTATE MOISTURE INTO THE FORECAST AREA AND KEEP A RELATIVELY COOL POOL OF AIR ALOFT OVER THE REGION. THIS WILL HELP TO SUPPORT THE DEVELOPMENT OF CONVECTION OVER THE REGION THROUGH MUCH OF THE EARLY PART OF THE FORECAST PERIOD. DAY TIME HEATING ALONG WITH THE UPPER LEVEL THERMAL PROFILE AND UPPER LEVEL POSITIVE VORTICITY MAXIMUMS ROTATING AROUND THE LOW WILL ALSO SUPPORT THE CONVECTION EXPECTED. SO WILL KEEP THE MENTION OF SHOWERS AND THUNDERSTORMS SATURDAY AND POSSIBLY INTO SUNDAY.
It does look like a strong trough (for the season) will keep temps cooler in the central part of the USA.
However for those of us to the west and east, it looks like the upcoming holiday will see either hot desert like temps (90's and 100's in the west)....or a steam bath of tropical flow of humid air and thuderstorms (some which could be heavy) along the East Coast. An area of high pressure at most levels will build and get very strong over the West. Similarly, an area of high pressure will build off the Atlantic coast. This Bermuda high will likely direct a stream of tropical moisture from the Caribbean and the Gulf of Mexico northward along the Atlantic Seaboard right to Boston. This might not be so good heading into the early part of the tropical cyclone season.
NATIONAL WEATHER SERVICE CLEVELAND OH
655 AM EDT TUE JUN 25 2013
IF I DID NOT KNOW ANY BETTER I WOULD SWEAR WE ARE HEADED BACK INTO A WINTER PATTERN AND YET IT IS SUMMER. THE UPPER LEVEL PATTERN IS TRENDING BACK TOWARD SOME MAJOR AMPLIFICATION OF THE RIDGE IN THE WESTERN UNITED STATES. TYPICALLY WHEN THIS HAPPENS...A DEEP DIGGING TROUGH DEVELOPS OVER THE EASTERN UNITED STATES SENDING THE POLAR JET STREAM WELL SOUTH INTO THE SOUTHERN STATES. THE OTHER ISSUE AT HAND IS THE DEVELOPMENT OF THE UPPER LEVEL LOW OVERHEAD THAT REMAINS NEARLY STATIONARY THROUGH THE END OF THE FORECAST PERIOD.
AN UPPER LEVEL PATTERN LIKE THIS WILL CONTINUE TO ROTATE MOISTURE INTO THE FORECAST AREA AND KEEP A RELATIVELY COOL POOL OF AIR ALOFT OVER THE REGION. THIS WILL HELP TO SUPPORT THE DEVELOPMENT OF CONVECTION OVER THE REGION THROUGH MUCH OF THE EARLY PART OF THE FORECAST PERIOD. DAY TIME HEATING ALONG WITH THE UPPER LEVEL THERMAL PROFILE AND UPPER LEVEL POSITIVE VORTICITY MAXIMUMS ROTATING AROUND THE LOW WILL ALSO SUPPORT THE CONVECTION EXPECTED. SO WILL KEEP THE MENTION OF SHOWERS AND THUNDERSTORMS SATURDAY AND POSSIBLY INTO SUNDAY.
I was at work last night and 15 minutes after I clock in the supercell arrives (I'm near Harrisburg) and the wind gusts immediately pick up to about 60mph with brief torrential rainfall. That was quite a storm. After it was over the air felt noticeably cooler and, most importantly, drier .
Struggling past 70s here. Thats how summer should be.
Clouds and a Sea Breeze has taken over. Normals are in the low 80s
Send some of that my way, we need a little break down here, been low 90s and high 80s here all week with dew points in the mid to high 60s.....
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