Plan your trip Local Radar Detailed Forecast

Today: Partly cloudy with chance of showers and thunderstorms in the morning then mostly cloudy with showers and thunderstorms likely in the afternoon. Some thunderstorms may produce heavy rainfall in the afternoon. Highs in the mid 90s. Southwest winds 5 to 10 mph. Chance of rain 60 % Heat index readings 104 to 108.

Tonight: Mostly cloudy with a 20% chance of showers and thunderstorms. Lows in the mid 70s. Southwest winds 5 mph.

Numerous showers and thunderstorms are forecast along and north of the I-10 corridor today. locally heavy rainfall, isolated strong to severe wind gusts and intense cloud to ground lightning will be the main concerns.

The combination of temperatures in the low to mid 90s and high humidity will create heat indices between 100 and 110 degrees prior to the onset of any precipitation. If you plan to be outside void prolonged exposure or strenuous physical activity.

Forecast Details: forecast area remains in squeeze play between three features, remnantsof td#5 to the west over Alabama, stalled, back door front to the

north across Georgia and high pressure ridge oversouthern Florida. This  all adds up to a very moist tropical airmass stalled over the forecast area with precipitation water amounts close to 2.5 inches in some locations. Steering flow remains out of the west around 10 knots and already have convection this morning tracking along the I-10 corridor and expect numerous showers and embedded thunderstorms from the I-10 corridor northward across southeastern Georgia through the afternoon ours. Training of cells and high precipitable waters suggest locally heavy rainfall in some of these areas. Activity will likely be more scattered south of the I-10 corridor across northestern Florida as slight ridging aloft will suppress activity just a bit. Enough insolation should still push maximum temperatures quickly into the lower 90s with dewpoints in the upper 70s to produce heat indices into the 105-110 range but numerous shower activity should keep values just below heat advisory criteria.   Main threat from thunderstorm activity this afternoon still expected to be locally heavy rainfall due to very high precipitation water amounts and slower storm motion toward the east at 10-15 miles per hour. Maximum temperatures in the lower 90s still expected to produce surface based convective available potential energy in the  3000-5000 j/kg range and while most storms will see wind gusts of 30-40 miles per hour, there is some potential for isolated storms with microburst winds around 50 miles per hour during the late afternoon and early evening hours  Convection will fade quickly this evening across northestern Florida while 1ssolated/scattered activity may hang on a bit longer across southeastern Georgia in the vicinity of the stalled frontal boundary into the overnight hours. 

Today's Pollen Levels: 6.3 Medium (on a scale to 12); Predominate Pollen: Grass and chenopods.

For additional information visit the National Weather Service in Jacksonville website on the internet at http://www.srh.noaa.gov/jax/