A FLOOD WATCH remains in effect for the entire Capital Region through Friday morning. A FLASH FLOOD WATCH means conditions may develop that lead to flash flooding. Flash flooding is a very dangerous situation. Be on the lookout for threatening weather conditions and listen for later statements and possible warnings. For more on flooding safety, CLICK HERE.

The Next Impact: Overall, you will find a lot of dry time on Wednesday, which should allow drainage to recover from recent heavy rains. Although it will be a mostly cloudy sky, there will be a few peaks of sunshine. Despite any sunshine and dry time, scattered showers and thunderstorms will remain possible throughout the day, especially during the afternoon and evening. While we may see fewer total storms on Wednesday, the ones that do break out will be capable of dumping heavy rain very quickly. Late this evening and overnight is when the main impacts arrive. Heavy, tropical rain bands will move inland as a tropical disturbance makes landfall. Rainfall will be likely most of the night and even into Thursday morning. This could make the Thursday morning commute very messy, so prepare for much slower drive times, and possible flooded roadways. Storms will stay likely throughout Thursday, before coverage trends down in the evening. 

The main impact from this tropical disturbance will be the be the threat of flash flooding. Widespread additional amounts of 4-7 inches of rain with “streaks” of 8-14 inches are likely. If those amounts occur in our cities rather than open marsh or swamp land, it will trigger significant poor drainage and river flooding. In addition to the heavy rain, circulation associated with the tropical disturbance could also lead to an isolated, brief tornado.

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Up Next: On Friday, the tropical system will finally pull away to the east. Scattered showers and thunderstorms will develop due to lingering tropical moisture. Expect a slow, gradual lowering of daily rain coverage with the pattern moving back toward daytime warming pop-up thunderstorms over the weekend. Humidity will stay in place and highs will return to the 90s.    

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The Tropics: The low-pressure system near the Middle Texas coast has been upgraded to Tropical Storm Arthur, with sustained winds of 40 mph confirmed by buoy, ship, and aircraft data. Arthur is currently accelerating northeastward and is forecast to track along or over the Texas coast today before moving inland over southeastern Texas and southwestern Louisiana tonight. Due to strong westerly wind shear and land interaction, significant strengthening is unlikely; the storm’s tropical-storm-force winds remain confined to its eastern side over offshore waters, and Arthur is expected to weaken and dissipate by tonight. Heavy rainfall and life-threatening flash flooding remain the primary hazards.

River Flooding: With recent heavy rain and more storms on the way, several local river gauges are forecast to rise. To track conditions, find the latest river levels and forecasts below, updated twice every hour.

— The Storm Station Meteorologists

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