Meteorologist Dave Nussbaum's Weather Blog

...Tornado Watch for SE LA Until 9 PM... Possible Severe Weather Today :  Scattered showers and thunderstorms are starting to pop-up across SE LA this afternoon.  The atmosphere has become unstable again after the rain we had this morning.  This could cause the storms to become strong to severe with damaging winds, large hail and a few tornadoes.  SPC has SE LA in a Slight Risk for severe weather today and Washington Parish and Pearl River County, MS are in a Moderate Risk - meaning they have a greater chance of severe weather. These storms are being set off by an upper-level disturbance, a cold front, outflow boundaries and an very unstable atmosphere.  When you add up all of these ingredients you get the threat for severe weather.  Due to all of this, SPC has issued a Tornado Watch for areas along and north of I-12 in our viewing area until 9 PM.  Fortunately, the weather is not expected to be as violent as it was yesterday in Mississippi...

A cold front is going to move across Southeast Louisiana on this Earth Day, but it will not bring us much rain.  Actually, the front will not live up to its name!  You can expect mostly cloudy skies with only a 20-30% chance for an isolated shower or thunderstorm.  Most of you will not see any rain.  Highs will be mid to upper 70s with a few spots making it to 80 if you see more sunshine. The front will be along the coast tonight and we will not cool down much behind it.  There will be partly cloudy skies overnight with lows in the lower 60s. An area of high pressure will build over us on Wednesday and Thursday.  Each day will have mostly sunny to partly cloudy skies with highs in the lower 80s and lows in the lower to mid 60s.  The outlook for the busy weekend (Jazz Fest & the Zurich Classic) calls for partly cloudy skies on Friday, Saturday and Sunday with only a 10% chance for a pop-up shower each day.  It will become m...

Friday Night :  The cold front is moving across SE LA tonight and that will push the rain and storms to the LA Coast.  Overnight, we will keep partly to mostly cloudy skies around with a few spotty showers (20% Chance).  Lows will be near 56 north of the lake and 60 south. Saturday Outlook :  The cold front will stay stalled along the LA Coast on Saturday.  As it sits there, weak disturbances will move along it from west to east.  This will set off scattered showers and thunderstorms during the day (50% Chance).  However, the bulk of the rain will be along and south of the I-10 corridor.  North of I-10 it will be just some isolated to scattered showers/storms.  Any storm could produce heavy rain.  We will be cooler with highs struggling to reach 70. The tail-end of the cold front will start to retreat back to the north as a warm front on Saturday Night.  At the same time an area of low pressure is expected to develop along th...