Brian's exclusive forecast for Annapolis: Hazy, hot, and humid today with a high in the low to mid 90s. Light south winds. Warm and humid overnight with a low in the lower 70s. On Thursday, hot and humid conditions are expected with a chance of afternoon & evening thunderstorms and a high in the low to mid 90s. Mostly cloudy and turning cooler Thursday night with scattered rain showers and a low in the upper 60s. Breezy and much cooler on Friday with increasing sunshine and a high in the upper 70s. The extended outlook calls for sunshine on Saturday and Sunday with lows in the upper 40s and highs in the upper 60s to lower 70s on Saturday, and low to mid 70s on Sunday.
The record high temperature for September 11 is 100 degrees at Baltimore in 1983 and the record high for September 12 is 100 degrees at Baltimore set in 1983. Although these records are safe, we will experience summer-like temperatures today through Thursday with highs in the low to mid 90s each day. A clockwise flow of air around high pressure to our south is resulting in a southerly flow of air over the bay region. This will create hot and humid conditions through Thursday. By Thursday afternoon, widespread showers and thunderstorms will develop as a cold front approaches the area from the west. Some storms may be severe. As the cold front pushes across the bay, our winds will shift to the northwest and much cooler air will overspread the Middle Atlantic states. By Friday, highs will only reach the mid 70s and by Saturday morning some locations could drop into the upper 40s! Looking ahead to the weekend, we can plan for a mostly sunny Saturday and Sunday with lows near 50 and highs near 75.
On the Maryland portion of Chesapeake Bay, no advisories are currently in effect. Winds will come out of the south today at 10 knots or less with waves around 1 foot. Winds tonight will come out of the south at 10 knots or less with waves around 1 foot. Winds on Thursday will come out of the south at 10 knots with waves near 1 foot. Boaters should look out for thunderstorms Thursday afternoon & evening during which there may be gusty winds over 20 knots, heavy rain, and dangerous lightning. Marine weather information is provided only as a guide. Boaters should always stay tuned to the latest forecasts and advisories from the National Weather Service.
The average high temperature for September 11 is 80 degrees and the average low is 60. The records at Baltimore on this date are 100 degrees in 1983 and 43 degrees in 1917. Weather data courtesy of the National Weather Service. For more weather updates, please visit my Chesapeake Bay Weather page on Facebook, and if you're heading to Ocean City feel free to check out my Ocean City MD Weather page on Facebook. You can also follow me on Twitter @chesbayweather.