Today is the lone unsettled day out of the next 5. A trough of low pressure is moving through the region from west to east, a progressive system with its warm front having gone by already and a cold front to approach and cross the area by mid evening. While we won’t see any sun for fuel today, this is a fairly strong dynamic system for this time of year so that will help trigger the showers and a few heavier thunderstorms. There will be two main rounds of activity. The first is already in the WHW forecast areas western reaches as I write this, and will cross the area during this morning and midday, with a second round coming along late in the day / early evening. Between the two can be a few isolated showers or storms, but not much. While this won’t be a widespread severe weather outbreak, a few of the storms can be strong to locally severe. Also, while much of the region will not see this, these storms can also cause torrential rainfall, low visibility, and brief road flooding, so use caution if you plan to be traveling locally / regionally today. The low pressure area exits early Wednesday, but being a pretty dynamic system, its surface low will be rather impressive and it, combined with approaching high pressure from the west, will create a gusty breeze over the region both Wednesday and Thursday as we see dry weather and a cooling trend. High pressure builds over the region late in the week with continued fair weather – cool nights and pleasant days – Friday and Saturday.
TODAY: Cloudy. Showers and thunderstorms likely from southwest to northeast this morning to midday, a few storms possibly strong to severe. Downpours may lead to brief flooding in poor drainage locations as well. Isolated showers this afternoon then a better chance of showers and thunderstorms again in western areas by late in the day. Areas of fog. Humid – dew point 60s. Highs 70-77. Wind S 5-15 MPH, gusty near storms.
TONIGHT: Cloudy with showers and possible thunderstorms west to east early, then breaking clouds and a clearing trend but areas of fog thereafter. Drying air later at night. Lows 56-63. Wind W 5-15 MPH, higher gusts.
WEDNESDAY: Sun and passing clouds. Highs 73-80. Wind W 5-15 MPH.
WEDNESDAY NIGHT: Mostly clear. Lows 50-57. Wind NW 5-15 MPH.
THURSDAY: Sunny. Highs 68-75. Wind NW 5-15 MPH.
THURSDAY NIGHT: Clear. Lows 45-52. Wind NW up to 10 MPH.
FRIDAY: Sunny. Highs 66-73. Wind N up to 10 MPH.
FRIDAY NIGHT: Clear. Ground fog patches low elevations. Lows 45-52. Wind calm.
SATURDAY: Mostly sunny. Highs 70-77. Wind W to SW up to 10 MPH.
DAYS 6-10 (SEPTEMBER 18-22)
High pressure should be in general control of the weather for the period, main center trending to the south and allowing temperatures to warm to above normal. May need to watch for showers from an approaching front by the end of the period.
DAYS 11-15 (SEPTEMBER 23-27)
Depending on timing, showers may be around with a passing frontal system to start the period, but overall pattern looks dry with a general cooling trend.