James Spann has the midweek forecast for Alabama from Alabama NewsCenter on Vimeo.

WET SUMMER PATTERN: We are forecasting occasional showers and thunderstorms across much of Alabama through Friday as a tropical air mass remains in place, along with a weak upper trough over the region. While most of the rain will come from noon to midnight, there will be some late-night and morning activity as well. In fact, rain is falling on parts of central Alabama early this morning. Showers will be efficient rain producers in this kind of air mass; some communities saw more than 2 inches of rain Tuesday.

Temperatures will be below average because of clouds and showers; the high will be only in the 83- to 86-degree range today and Thursday and in the upper 80s Friday.

THE ALABAMA WEEKEND: Showers become more scattered over the weekend; the chance of any one spot getting wet Saturday and Sunday will be in the 30% to 40% range. Otherwise, we are forecasting a mixture of sun and clouds both days with afternoon highs between 87 and 90 degrees.

NEXT WEEK: We are looking at pretty typical summer weather for much of the week — partly sunny, hot, humid days with random, scattered, mostly afternoon and evening showers and thunderstorms and highs at or just over 90 degrees.

TROPICS: “Potential Tropical Cyclone Nine” should become Tropical Storm Isaias later today in the Atlantic. The system is moving through the southern Leeward Islands this morning. From there, it will move near or over the Virgin Islands and Puerto Rico tonight, near or over Hispaniola Thursday and near or over the southeastern Bahamas on Friday.

The latest forecast track moves the system through the Florida Peninsula (not the Panhandle) Sunday, but it should be emphasized that this forecast track is highly uncertain until a true circulation center forms (which should happen within the next 24 hours).

Concerning the intensity forecast, with the circulation expected to cross Hispaniola, weakening is likely due to interaction with land. The system will probably take some time to recover after moving over the very high mountains of Hispaniola, and some of the guidance after that time shows an increase in southwesterly shear over the Straits of Florida that could limit the potential of the cyclone. Simply put, there are a lot of hurdles in the system’s way, and the National Hurricane Center keeps the system below hurricane strength over the next five days.

It continues to look like Alabama and the central Gulf Coast (Gulf Shores, Pensacola, Panama City Beach) will be on the dry, west side of the circulation. But it is very early and confidence in the forecast track is low in the three- to five-day period. We will keep an eye on it.

The rest of the Atlantic basin is quiet.

TUESDAY’S RAIN: Some rain totals across Alabama Tuesday included:

• Warrior/Corner — 4.79 inches
• Jacksonville — 1.8 inches
• Remlap — 1.54 inches

ON THIS DATE IN 1960: Severe thunderstorms brought damaging winds, possibly as high as 100 mph, to central Oklahoma. Eight planes and several hangars were damaged at Wiley Post Airfield, while two aircraft and additional hangars were damaged at Will Rogers World Airport. The winds caused seven injuries in the area, including two youths who were injured by flying debris.

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