Posted at 05:00 AM ET, 09/23/2011

Forecast: Periods of heavy rain could lead to flash flooding

Flash flood watch for metro area from Friday morning through Friday evening

Today's Daily Digit
 
A somewhat subjective rating of the
day's weather, on a scale of 0 to 10.

 
Sigh, I don't want rain. Combined with overcast skies/muggy air = not a great one. Watch for flooding!
 
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EXPRESS FORECAST

Today: Periods of rain, flooding downpours possible. 74-79. | Tonight: Rain and flood threat persists. 64-68. | Tomorrow: Significant clouds, showers. 74-79. | Sunday: More clouds, showers. Mid-to-upper 70s. | Get Express Forecast by E-mail

FORECAST IN DETAIL

Please be mindful today, especially if you notice an extended period of heavy rain. With soil still pretty saturated, flooding is again possible. But, even looking past today’s rain which should be the heaviest of the period, the weekend still looks dank and dreary. Yeah, we are all sick of this, right? Same ol’ same ol’. Hang in there. Watch the radar with us and take that umbrella with you.

Today (Friday): Overcast skies seem pretty much a given, but we also need to be wary of heavy rain. Showers, and perhaps a rumble, could cause flooding, especially if moving over the same areas like rain trains of past. It’s still somewhat uncertain where the heaviest sets up and when, but chances of rain before the day is out are near 100%. It could come in spotty waves, and it might be worse late as compared to early, but pockets of heavy rain are possible at any time. While warm-air lovers will like highs in the mid-to-upper 70s, I shall complain about the mugginess. Please remember to “turn around and don’t drown” when water covers a rodway. Confidence: Medium

Tonight: Heavy showers, and maybe some rumbles, could last into the evening and night. It’s hard to pin down timing since atmospheric triggers are erratic, but rain odds are again near 100%, especially early. We could see widespread rainfall totals of 2 or 3” with higher “bullseyes” (and also some lower totals). Clouds and possible pre-dawn fog really keep us insolated and socked-in, with low temperatures only getting down into the mid-and-upper 60s. “Turn around” is extremely important after dark and flooding may continue into the night. Confidence: Low-Medium

Keep reading for the forecast through the beginning of next week...

Tomorrow (Saturday): While I can’t rule out a single peek of sunshine, you know how our luck has been. This upper level low pressure system keeps clouds plentiful and showers wetting us. Especially during the midday and afternoon, a 70% chance of seeing showers (even a downpour) exists. If clouds stay completely overhead, mid-70s could be the best we do. A couple periods of sun could get us toward 80.  Confidence: Medium

Tomorrow night: We’ve still got about a 50% chance of showers in the forecast. Lows in the muggy 60s looks likely, because, well, we just can’t shake these clouds and accompanying moisture. Argh. Confidence: Medium

Sunday: More proof the broken record is broken? Hah. Clouds dominate with a 50% chance of showers and an isolated downpour from a thundershower. Temperatures try again to climb to the mid-to-upper 70s. At least this isn’t a cold period of rain? Even I will take the mugginess over that. Wow.  Confidence: Medium

A LOOK AHEAD

Sunday night: Overnight sticky low temperatures may only get into the 60s with showers again likely (50-60% chance), maybe just start wearing the umbrella as an accessory. Confidence: Low-Medium

Is it possible we downgrade from “overcast” skies to simply “mostly cloudy” on Monday? Still, clouds will be abundant (what’s new) and showers could bother us yet again (40-50% chance). Highs cluster around the mid-to-upper 70s with that outside chance of hitting 80, should we see unexpected levels of sunshine. Confidence: Low-Medium

On Tuesday, dewpoint temperatures could stay in the 60s and that should create, still, a humid and somewhat muggy feeling. Clouds may give way to just a bit more sunshine, but I am not too optimistic since I foresee a 40% chance of more plague-like showers. Highs in the low-to-mid 70s seem a good bet from here.  Confidence: Low

By  |  05:00 AM ET, 09/23/2011

Categories:  Forecasts

 
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