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Posted at 5:00 AM ET, 06/ 1/2009

Forecast: Monday Sunshine, Mid-Week Storminess

By Jason Samenow

* Outside Right Now? See Radar, Temps & More: Weather Wall *
* Later: Report Claims Climate Change Killing 300,000, Reactions *

EXPRESS FORECAST

Today: Mostly sunny. Near 80. | Tonight: Mostly clear. 56-64. | Tomorrow: Partly cloudy and very warm. Late storms? Upper 80s. | A Look Ahead

FORECAST IN DETAIL

Not unlike last week, a slow moving front will keep rain in the forecast for a good chunk of the week. Though I doubt we'll see a repeat of the 2.5-5 inches that fell last week, locally heavy downpours may accompany showers and storms that develop Tuesday through Friday, especially during the afternoon and evening hours. Today though, lots of pleasant sunshine is in the picture and it may conveniently return for next weekend...

Today (Monday): If you decided to extend your weekend an extra day, very good thinking. We'll have a refreshingly cool morning -- in the 50s and 60s, and an enjoyably warm afternoon -- in the 70s to near 80. The humidity will be low and the winds light -- out of the east at about 5-10 mph. Confidence: High

Tonight: The cool low temperatures -- in the mid 50s to low 60s (suburbs to city) will provide for one more evening to leave your air conditioning off. Skies will be clear and winds light. Confidence: High

Keep reading for the forecast through the weekend....

Tomorrow (Tuesday): Winds start to come in from the south, and regular readers of this blog know that means increasing heat and humidity. High temperatures will jump up to 10 degrees compared to today, reaching the upper 80s in most spots. The humidity, while not oppressive, will certainly be more apparent. Late in the afternoon and evening, a few showers and thunderstorms may develop (40% chance). Confidence: Medium-High

Tomorrow Night: Showers and thunderstorms are possible (40% chance), especially before midnight. Lows will be in the mid-60s to near 70. Confidence: Medium-High

A LOOK AHEAD

Wednesday will be similar to Tuesday -- warm and humid, with a 40% chance of afternoon and evening showers and storms. Highs will reach the mid-to-upper 80s, with lows in the 60s to near 70. Confidence: Medium-High

More showers and thunderstorms may occur Thursday, as the front -- positioned to our west Tuesday and Wednesday -- tries to punch south of the region. Highs may hold in the 70s under mostly cloudy skies. These storms could linger overnight, with lows in the 60s. Confidence: Medium

The front may have pushed far enough south to give us a dry Friday. But last week -- in a similar situation -- it remained right smack over us, extending the shower and thunderstorm threat. I'll hedge a bit, and call for a 30% chance of showers and storms, with highs near 80. Confidence: Low-Medium

Current guidance suggests we'll dry out for the weekend, but we'll need to watch a front to the west that may edge close enough to provide at least a chance (20% at this point) of afternoon/evening showers and storms, particularly on Sunday. Otherwise, both days should be partly sunny, with highs near 80 Saturday, and 85 on Sunday (with a bit more humidity). Overnight lows should range from the upper 50s to the mid-60s (suburbs to city). Confidence: Medium

By Jason Samenow  | June 1, 2009; 5:00 AM ET
Categories:  Forecasts  
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Comments

Happy met summer and enjoy the upcoming hurricane season!

Tonight seems to be my only dry dance night this week since another of these darned ITCZ-style "convergence zones" appears destined to park just to our south until next week or so.

Let's bring on that good ol' Bermuda High and dry us out some.

Posted by: Bombo47jea | June 1, 2009 8:15 AM | Report abuse

Some high cirrus cloudiness has been overspreading us from the NW. Behind that there's an MCS thunderstorm which has just passed through Columbus, OH. This storm or MCS may break up and dissipate over WV but we could see some of the cloudiness late today.

News reports are saying that the Air France jetliner with 260 aboard which disappeared last night over the Atlantic might have been hit by lightning, as it was entering a region of heavy thunderstorms off Brazil. WWLL lightning data shows that one of the most intense areas of lightning strikes in the Southern Hemisphere during the past 24 hours consisted of a line of heavy thunderstorms moving just off the coast of Brazil. The plane, an Airbus model [which up to then had no fatal crashes], was enroute from Rio De Janeiro [or Sao Paolo, according to WTOP this morning] when it disappeared from radar last night. Data from Air France indicated an electrical malfunctiion, then silence.

Posted by: Bombo47jea | June 1, 2009 12:56 PM | Report abuse

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