Orleans News

Southeast Louisiana and New Orleans snow warnings in place


Chilly, arctic air is dropping into Southeast Louisiana proper now and that may work together with a creating low within the Gulf of Mexico that may carry snow to New Orleans. A Winter Storm Warning is now in impact for everybody proven right here.Widespread snow totals 3-4″ are seemingly for everybody within the warning.Radar | Obtain our app | Join climate alerts | Ship us your photosOVERVIEW:A bit of the Polar Vortex will dip by means of Canada and into the Central U.S. dropping in extraordinarily chilly arctic air all throughout the nation east of the Rocky Mountains.TEMPERATURE FORECAST:A Chilly Climate Advisory is in impact till 9 a.m. Monday. This very chilly air will final by means of Tuesday and Wednesday too. An Excessive Chilly Watch has been issued for Tuesday night time into Wednesday morning the place our first Excessive Chilly Warning is prone to be issued.PRECIPITATION FORECAST:We have been monitoring the potential of wintry climate and snow round Tuesday. Snow is now seemingly, however we’ll nonetheless start the occasion with pockets of rain, sleet, and freezing rain. A sleet/snow combine is likeliest across the I-10 hall and in the direction of the coast whereas largely all snow is likeliest alongside the Northshore. This is a break down on the pc forecast knowledge. GRAF (World high-Decision Atmospheric Forecasting System) – IBMNow that we’re inside two days away from the storm, our excessive decision knowledge are in. This forecast begins with sleet, however turns to heavy snow all throughout Southeast Louisiana by mid-morning and thru the remainder of the day.These snowfall totals are on the intense, and isn’t what we’re forecasting.NAM (North American Mannequin)The NAM is just like the GRAF in snowfall quantities too. On the intense finish, for certain!GFS (World Forecast System – U.S.)The GFS and ECMWF are just about in step with one another. ECMWF (European – Europe)ACCUMULATION:The North Shore will seemingly see the heaviest quantities, however the South Shore and River Parishes will seemingly have measurable snowfall as properly. PRECIPITATION TYPES:When the environment will get chilly sufficient, the clouds are literally comprised of ice crystals. When the precipitation first falls, it falls within the type of snow. Nevertheless, right here alongside the coast the snow normally runs right into a layer of air hotter than freezing and melts into rain. If the rain meets temperatures beneath freezing at floor degree and would not have sufficient time to refreeze, it’s known as “freezing rain” the place the rain drops immediately freeze up right into a sheet of ice on the roads and canopy the bushes, brushes, and fences with a glaze of ice. That is probably the most harmful type of wintry climate! If the as soon as snowflake raindrops encounter a deep sufficient layer of sub freezing air at floor degree, it is going to refreeze into an ice pellet, or sleet. And if the snow by no means meets a degree falling to the bottom the place the air temperature rises above freezing, it is going to fall as snow. This is a diagram of what this appears to be like like.Make sure you stick with the WDSU First Warning Climate Staff for all the newest on Tuesday’s wintry climate.

Chilly, arctic air is dropping into Southeast Louisiana proper now and that may work together with a creating low within the Gulf of Mexico that may carry snow to New Orleans. A Winter Storm Warning is now in impact for everybody proven right here.

winter storm warning

Widespread snow totals 3-4″ are seemingly for everybody within the warning.

Radar | Obtain our app | Join climate alerts | Ship us your photographs

OVERVIEW:

A bit of the Polar Vortex will dip by means of Canada and into the Central U.S. dropping in extraordinarily chilly arctic air all throughout the nation east of the Rocky Mountains.

TEMPERATURE FORECAST:

A Chilly Climate Advisory is in impact till 9 a.m. Monday. This very chilly air will final by means of Tuesday and Wednesday too. An Excessive Chilly Watch has been issued for Tuesday night time into Wednesday morning the place our first Excessive Chilly Warning is prone to be issued.

extreme cold watch

PRECIPITATION FORECAST:

We have been monitoring the potential of wintry climate and snow round Tuesday. Snow is now seemingly, however we’ll nonetheless start the occasion with pockets of rain, sleet, and freezing rain. A sleet/snow combine is likeliest across the I-10 hall and in the direction of the coast whereas largely all snow is likeliest alongside the Northshore. This is a break down on the pc forecast knowledge.

GRAF (World high-Decision Atmospheric Forecasting System) – IBM

Now that we’re inside two days away from the storm, our excessive decision knowledge are in. This forecast begins with sleet, however turns to heavy snow all throughout Southeast Louisiana by mid-morning and thru the remainder of the day.

graf models at 6am

graf model at 1pm

graf models at 8pm

These snowfall totals are on the intense, and isn’t what we’re forecasting.

graf forecast snow totals

NAM (North American Mannequin)

The NAM is just like the GRAF in snowfall quantities too. On the intense finish, for certain!

nam 6am tuesday

nam 1pm tuesday

nam 8pm tuesday

nam snowfall forecast

GFS (World Forecast System – U.S.)

The GFS and ECMWF are just about in step with one another.

gfs snowfall forecast

ECMWF (European – Europe)

euro snowfall amounts

ACCUMULATION:

The North Shore will seemingly see the heaviest quantities, however the South Shore and River Parishes will seemingly have measurable snowfall as properly.

snowfall estimates


PRECIPITATION TYPES:

When the environment will get chilly sufficient, the clouds are literally comprised of ice crystals. When the precipitation first falls, it falls within the type of snow. Nevertheless, right here alongside the coast the snow normally runs right into a layer of air hotter than freezing and melts into rain. If the rain meets temperatures beneath freezing at floor degree and would not have sufficient time to refreeze, it’s known as “freezing rain” the place the rain drops immediately freeze up right into a sheet of ice on the roads and canopy the bushes, brushes, and fences with a glaze of ice. That is probably the most harmful type of wintry climate! If the as soon as snowflake raindrops encounter a deep sufficient layer of sub freezing air at floor degree, it is going to refreeze into an ice pellet, or sleet. And if the snow by no means meets a degree falling to the bottom the place the air temperature rises above freezing, it is going to fall as snow. This is a diagram of what this appears to be like like.

Make sure you stick with the WDSU First Warning Climate Staff for all the newest on Tuesday’s wintry climate.

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