Tag Archive for 'normal'
June 21st, 2009 by Steven DiMartino
9:52 AM
June has seen some very impressive rainfall amounts with many locations well over an inch above normal. Even some locations double the amount of normal rainfall. While a continuous onslaught of showers and thunderstorms have impacted much of the Mid Atlantic, and specifically the New York City and Philadelphia metropolitan areas, other locations have [...]
June 20th, 2009 by Steven DiMartino
7:30 AM
The forecast for today through tonight is best described as significantly complicated and potentially very active. The main theme is basically the progression of the warm front currently over southwesterly Pennsylvania through eastern Virginia. I want to start with the fact that the surface low pressure system is further north and weaker than forecasted [...]
June 19th, 2009 by Steven DiMartino
7:15 AM
As low pressure exits the forecast area this morning, a brief break in the clouds and rainfall can be expected through the day. In case anyone forgot, that big bright ball in the sky is called the sun, and no we are not in Seatlle. Weak high pressure over the eastern Great Lakes will [...]
June 18th, 2009 by Steven DiMartino
7:39 AM
A clash of air masses is unfolding right over the forecast area as the marine air mass that has been over the forecast area the past several days slowly is eroded from the region and off the coast. The latest surface map best describes the current situation. High pressure remains off the New England [...]
June 16th, 2009 by Steven DiMartino
7:58 AM
The rainy pattern that much of the forecast area has experienced this June is taking a short break, as high pressure positions itself over Maine this morning. The position of the high pressure system will still force a marine air mass in place over the region, which is supporting the low clouds this morning. [...]
June 15th, 2009 by Steven DiMartino
7:18 AM
Another disturbance is dropping south through the Hudson Valley, Connecticut, and Long Island Sound this morning with a round of heavy rain this morning. This disturbance will continue to drop south and east and will exit the forecast area over the next 2 to 3 hours, impacting much of Connecticut and Long Island rush hour [...]
June 14th, 2009 by Steven DiMartino
8:36 AM
Through this up coming week, the weather conditions will mirror more of late September rather than mid June as high pressure positions itself over Maine and several waves of low pressure passes to the south. Conditions like yesterday’s heavy rain event may develop for any particular afternoon where some clearing develops and mesoscale boundaries [...]
June 11th, 2009 by Steven DiMartino
7:55 AM
While the upper low over the central Tropical Atlantic is no more, a strong westerly shear dominates much of the region with no development expected over the next three days. A trough over the Caribbean Sea is producing strong southwesterly shear from Cuba on through the Leeward Islands. Meanwhile, disturbances coming off the African [...]
June 11th, 2009 by Steven DiMartino
7:34 AM
The theme for this summer, raw and cool, looks to continue as once again the forecast area is positioned north of a stationary front this morning. The forecast area is clearly under the influence of a marine air mass as an easterly wind fostered by high pressure over Maine and a stationary front over [...]
June 10th, 2009 by Steven DiMartino
7:30 AM
The upper low that has inhibited the development of any tropical disturbance over the Atlantic continues to weaken and move towards Europe this morning. However, westerly shear continues to influence much of the Tropical Atlantic and will continue to do so over the next several days. Another trough over the Caribbean this morning will [...]