...HIGH HEAT INDICES CONTINUE... | |
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Today: Partly cloudy early in the morning then becoming mostly cloudy. A 50 % chance of showers and thunderstorms. Highs in the lower 90s. Southwest winds 5 to 10 mph. Heat index readings 103 to 107.
Tonight: Mostly cloudy. Chance of showers and thunderstorms in the evening then slight chance of showers and thunderstorms after midnight. Lows in the mid 70s. Southwest winds 5 mph. Chance of rain 30 %.
The combination of hot temperatures and high humidities will create heat index values near 105 degrees today.
Numerous to scattered showers and thunderstorms are expected across the area today. activity will progress inland from the Gulf of Mexico this morning with more numerous development of convection across southeast Georgia and portions of coastal northeast Florida late this afternoon and evening. storm motion will be from the west around 10 mph or less. periods of heavy rainfall may cause minor temporary flooding concerns.
Convection is expected to decrease in coverage and intensity after sunset.
Forecast Details: the mean 1000-700 mb surface ridge axis will continue across South Florida with a broad trough and high band of moisture (PWATs 2.3 to 2.6 inches) over the southeast region today. The weakening middle level circulation that was dew point 5 now over southern Alabama will drift eastward today and this feature along a light west-southwest steering flow will bring thunderstorms and rain first to our Suwannee Valley zones this morning with outflow and sea breeze mergers focusing toward the I-95 corridor in the late aftn/evening. Stronger ridging over Florida will keep probability of precipitation in the scattered range. The main convective concern in addition to lightning will be periods of heavy rainfall due to high moisture content and slow storm motion. Lower 90s are expected across inland areas with near 90 along the Atlantic coast. Humid conditions will prevail with heat indices in the 103-107 range this afternoon.
Today's Pollen Levels: 6.8 Medium (on a scale to 12); Predominate Pollen: Ragweed, Grass and Chenopods.
For additional information visit the National Weather Service in Jacksonville website on the internet at http://www.srh.noaa.gov/jax/
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