Slidell, Louisiana Weather Conditions

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Current Conditions

  • 50°
  • Overcast
  • Wind: NNE 4 mph
  • Humidity: 86%
  • Visibility: 10.0 miles
  • Dew Point: 46°
  • Pressure: 30.10 in. -

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Next 12 Hours

6  am
9  am
12  pm
3  pm
6  pm
Overcast
Overcast
Mostly Cloudy
Mostly Cloudy
Mostly Cloudy
Mostly Cloudy
Chance of Rain
Chance of Rain
Chance of Rain
Chance of Rain
45°
54°
59°
63°
55°
Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Sunday
  • Chance of Rain
  • High: 63 °
  • Low: 48 °
  • Chance of Rain
  • Monday
  • Chance of a Thunderstorm
  • High: 70 °
  • Low: 57 °
  • Chance of a Thunderstorm
  • Tuesday
  • Thunderstorm
  • High: 73 °
  • Low: 46 °
  • T-Storms
  • Wednesday
  • Partly Cloudy
  • High: 55 °
  • Low: 30 °
  • Partly Cloudy
  • Thursday
  • Partly Cloudy
  • High: 61 °
  • Low: 36 °
  • Partly Cloudy

Forecast for Slidell, Louisiana

Updated: 3:00 AM CST on December 21, 2014

  • Sunday

    Overcast in the morning, then mostly cloudy with a chance of rain. High of 63F. Winds from the ENE at 5 to 10 mph. Chance of rain 20%.

  • Sunday Night

    Overcast with a chance of rain. Fog overnight. Low of 48F. Winds from the North at 5 to 10 mph shifting to the East after midnight. Chance of rain 20%.

  • Monday

    Partly cloudy with a chance of rain. High of 70F. Winds less than 5 mph. Chance of rain 20%.

  • Monday Night

    Overcast with a chance of a thunderstorm and a chance of rain. Low of 57F. Winds from the South at 5 to 15 mph. Chance of rain 40% with rainfall amounts near 0.3 in. possible.

  • Tuesday

    Mostly cloudy with a chance of a thunderstorm and a chance of rain, then thunderstorms and rain showers in the afternoon. High of 73F. Breezy. Winds from the SSW at 10 to 20 mph. Chance of rain 60% with rainfall amounts near 0.7 in. possible.

  • Tuesday Night

    Overcast with a chance of a thunderstorm and rain. Fog overnight. Low of 46F. Breezy. Winds from the SW at 10 to 20 mph. Chance of rain 70% with rainfall amounts near 0.5 in. possible.

  • Wednesday

    Overcast in the morning, then mostly cloudy. Fog early. High of 55F. Breezy. Winds from the WNW at 15 to 20 mph.

  • Wednesday Night

    Partly cloudy. Fog overnight. Low of 30F with a windchill as low as 23F. Breezy. Winds from the WNW at 10 to 20 mph.

  • Thursday

    Partly cloudy. Fog early. High of 61F. Winds from the WNW at 5 to 10 mph.

  • Thursday Night

    Partly cloudy. Fog overnight. Low of 36F. Winds from the South at 5 to 10 mph.

  • Friday

    Mostly cloudy. High of 68F. Winds from the SSE at 5 to 10 mph.

  • Friday Night

    Partly cloudy. Fog overnight. Low of 46F. Winds from the SSE at 5 to 10 mph.

  • Saturday

    Partly cloudy with a chance of rain. Fog early. High of 68F. Winds from the South at 5 to 10 mph shifting to the WNW in the afternoon. Chance of rain 20%.

  • Saturday Night

    Overcast. Fog overnight. Low of 34F. Winds from the North at 10 to 15 mph.

  • Sunday

    Partly cloudy. High of 59F. Winds from the NNE at 5 to 10 mph.

  • Sunday Night

    Clear. Fog overnight. Low of 34F. Winds from the NE at 5 to 10 mph.

  • Monday

    Clear. High of 63F. Winds from the East at 5 to 10 mph.

  • Monday Night

    Clear. Low of 48F. Winds less than 5 mph.

  • Tuesday

    Partly cloudy. High of 59F. Winds less than 5 mph.

  • Tuesday Night

    Partly cloudy. Low of 43F. Winds from the NNW at 5 to 10 mph.

  • Wednesday

    Partly cloudy. High of 54F. Winds from the NNW at 5 to 10 mph.

  • Wednesday Night

    Clear. Low of 43F. Winds from the NNW at 5 to 10 mph.

Personal Weather Stations

Personal Weather Stations [Add your weather station!]

Location: Michigan Ave. The Roy's, Slidell, LA

Updated: 6:01 AM CST

Temperature: 50.5 °F Dew Point: 48 °F Humidity: 90% Wind: Calm Pressure: 30.07 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Slidell, LA

Updated: 5:53 AM CST

Temperature: 50.3 °F Dew Point: 48 °F Humidity: 92% Wind: Calm Pressure: 30.10 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Oak Harbor, Slidell, LA

Updated: 6:01 AM CST

Temperature: 49.2 °F Dew Point: 46 °F Humidity: 89% Wind: NNE at 3.0 mph Pressure: 30.03 in Hourly Precipitation: 0.00 in Windchill: 49 °F Graphs

Location: Eden Isles, Slidell, LA

Updated: 7:01 AM EST

Temperature: 50.8 °F Dew Point: 48 °F Humidity: 91% Wind: Calm Pressure: 30.08 in Hourly Precipitation: 0.01 in Windchill: - Graphs

Location: Timber Ridge, Slidell, LA

Updated: 6:01 AM CST

Temperature: 51.0 °F Dew Point: 46 °F Humidity: 84% Wind: Calm Pressure: 30.10 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Bayou Liberty, Slidell, LA

Updated: 5:55 AM CST

Temperature: 50.2 °F Dew Point: 47 °F Humidity: 89% Wind: Calm Pressure: 30.11 in Hourly Precipitation: - Windchill: - Graphs

Location: Tammany Yacht Club, Slidell, LA

Updated: 5:01 AM MST

Temperature: 50.7 °F Dew Point: 48 °F Humidity: 90% Wind: NE at 5.0 mph Pressure: 30.10 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Circle O Acres, Slidell, LA

Updated: 6:01 AM CST

Temperature: 50.2 °F Dew Point: 46 °F Humidity: 87% Wind: Calm Pressure: 30.09 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: LAKEVIEW DR., Slidell, LA

Updated: 5:55 AM CST

Temperature: 50.8 °F Dew Point: 48 °F Humidity: 91% Wind: NE at 3.0 mph Pressure: 30.10 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Pearl River Town, Pearl River, LA

Updated: 5:51 AM CST

Temperature: 49.5 °F Dew Point: 46 °F Humidity: 89% Wind: Calm Pressure: 29.81 in Hourly Precipitation: - Windchill: 50 °F Graphs

Location: RAWS SELA PORTABLE LA US, Lacombe, LA

Updated: 4:34 AM CST

Temperature: 50 °F Dew Point: 47 °F Humidity: 91% Wind: Calm Pressure: - Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Oak Mill, Lacombe, LA

Updated: 6:01 AM CST

Temperature: 49.5 °F Dew Point: 47 °F Humidity: 92% Wind: Calm Pressure: 30.10 in Hourly Precipitation: 0.00 in Windchill: 50 °F Graphs

Location: Pearl Hickory, Pearl River, LA

Updated: 5:52 AM CST

Temperature: 48.2 °F Dew Point: 47 °F Humidity: 96% Wind: Calm Pressure: 29.86 in Hourly Precipitation: - Windchill: 48 °F Graphs

Location: RAWS BIG BRANCH NWR LA US, Lacombe, LA

Updated: 4:47 AM CST

Temperature: 50 °F Dew Point: 47 °F Humidity: 90% Wind: NE at 1 mph Pressure: - Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Hickory, Pearl River, LA

Updated: 5:58 AM CST

Temperature: 50.0 °F Dew Point: 34 °F Humidity: 55% Wind: Calm Pressure: 30.07 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Bayou Acres, Mandeville, LA

Updated: 5:56 AM CST

Temperature: 48.4 °F Dew Point: 48 °F Humidity: 98% Wind: Calm Pressure: 30.12 in Hourly Precipitation: - Windchill: 48 °F Graphs

Location: The Timbers, Mandeville, LA

Updated: 6:00 AM CST

Temperature: 48.6 °F Dew Point: 46 °F Humidity: 91% Wind: Calm Pressure: 30.08 in Hourly Precipitation: 0.00 in Windchill: 49 °F Graphs

Location: Soult Street/Molitor Street, Mandeville, LA

Updated: 6:01 AM CST

Temperature: 49.1 °F Dew Point: 47 °F Humidity: 94% Wind: Calm Pressure: 30.09 in Hourly Precipitation: 0.00 in Windchill: 49 °F Graphs

Location: Woodlands, Mandeville, LA

Updated: 6:01 AM CST

Temperature: 47.7 °F Dew Point: 46 °F Humidity: 95% Wind: Calm Pressure: 30.14 in Hourly Precipitation: 0.00 in Windchill: 48 °F Graphs

Location: Tanager Drive, Mandeville, LA

Updated: 6:00 AM CST

Temperature: 51.3 °F Dew Point: 48 °F Humidity: 90% Wind: North at - Pressure: 30.06 in Hourly Precipitation: - Windchill: - Graphs

Location: Deval Estates, Mandeville, LA

Updated: 6:01 AM CST

Temperature: 48.6 °F Dew Point: 48 °F Humidity: 99% Wind: Calm Pressure: 29.93 in Hourly Precipitation: 0.00 in Windchill: 49 °F Graphs

Location: Old Mandeville, Mandeville, LA

Updated: 5:50 AM CST

Temperature: 48.0 °F Dew Point: 47 °F Humidity: 97% Wind: Calm Pressure: 29.97 in Hourly Precipitation: - Windchill: 48 °F Graphs

Location: SHARP ROAD, Mandeville, LA

Updated: 6:01 AM CST

Temperature: 47.8 °F Dew Point: 46 °F Humidity: 95% Wind: Calm Pressure: 30.10 in Hourly Precipitation: 0.00 in Windchill: 48 °F Graphs

Location: Mandeville, Mandeville, LA

Updated: 5:55 AM CST

Temperature: 48.4 °F Dew Point: 46 °F Humidity: 91% Wind: Calm Pressure: 30.09 in Hourly Precipitation: - Windchill: 48 °F Graphs

Location: Magnolia Ridge Drive, Mandeville, LA

Updated: 6:01 AM CST

Temperature: 50.5 °F Dew Point: 48 °F Humidity: 90% Wind: North at - Pressure: 30.16 in Hourly Precipitation: - Windchill: - Graphs

Location: APRSWXNET Picayune MS US, Talisheek, LA

Updated: 5:31 AM CST

Temperature: 48 °F Dew Point: 47 °F Humidity: 97% Wind: Calm Pressure: 30.10 in Hourly Precipitation: 0.00 in Windchill: 48 °F Graphs

Location: Carriere, MS

Updated: 6:01 AM CST

Temperature: 49.0 °F Dew Point: 47 °F Humidity: 93% Wind: Calm Pressure: 30.03 in Hourly Precipitation: 0.00 in Windchill: 49 °F Graphs

Location: Pittari Lane, Carriere, MS

Updated: 5:56 AM CST

Temperature: 47.8 °F Dew Point: 45 °F Humidity: 89% Wind: Calm Pressure: 29.82 in Hourly Precipitation: - Windchill: 48 °F Graphs

Location: Chateau Village Subdivision, Mandeville, LA

Updated: 6:01 AM CST

Temperature: 49.1 °F Dew Point: 48 °F Humidity: 97% Wind: Calm Pressure: 29.97 in Hourly Precipitation: 0.00 in Windchill: 49 °F Graphs

Location: Round Rock, Picayune, MS

Updated: 5:50 AM CST

Temperature: 47.5 °F Dew Point: 47 °F Humidity: 99% Wind: Calm Pressure: 29.90 in Hourly Precipitation: - Windchill: 48 °F Graphs

Location: Covington / Abita Springs, Covington, LA

Updated: 6:01 AM CST

Temperature: 47.1 °F Dew Point: 46 °F Humidity: 94% Wind: Calm Pressure: 30.18 in Hourly Precipitation: 0.00 in Windchill: 47 °F Graphs

Location: Shoreline Park, Bay St. Louis, MS

Updated: 6:01 AM CST

Temperature: 50.4 °F Dew Point: - Humidity: - Wind: Calm Pressure: 30.12 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Hide_A_Way Lake ~OWX, Carriere, MS

Updated: 6:01 AM CST

Temperature: 48.4 °F Dew Point: 45 °F Humidity: 89% Wind: Calm Pressure: 30.07 in Hourly Precipitation: 0.00 in Windchill: 48 °F Graphs

Location: Deer Run Gang, Picayune, MS

Updated: 5:50 AM CST

Temperature: 48.4 °F Dew Point: 47 °F Humidity: 94% Wind: Calm Pressure: 30.03 in Hourly Precipitation: - Windchill: 48 °F Graphs

Location: Covington, Covington, LA

Updated: 5:54 AM CST

Temperature: 48.4 °F Dew Point: 47 °F Humidity: 96% Wind: Calm Pressure: 29.89 in Hourly Precipitation: - Windchill: 48 °F Graphs

Location: Joe's Redneck Weather, Waveland, MS

Updated: 6:01 AM CST

Temperature: 50.9 °F Dew Point: 45 °F Humidity: 79% Wind: Calm Pressure: 30.09 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Sadie's Weather on Jeff Davis, Waveland, MS

Updated: 6:01 AM CST

Temperature: 50.5 °F Dew Point: 46 °F Humidity: 83% Wind: Calm Pressure: 30.03 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Diamondhead, Diamondhead, MS

Updated: 6:01 AM CST

Temperature: 50.4 °F Dew Point: 48 °F Humidity: 91% Wind: Calm Pressure: 28.56 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Diamondhead, Diamondhead, MS

Updated: 5:55 AM CST

Temperature: 50.2 °F Dew Point: 47 °F Humidity: 90% Wind: Calm Pressure: 30.01 in Hourly Precipitation: - Windchill: - Graphs

MSN Maps of:

Temp: Dew Point: Humidity Wind Pressure Hr Precip -

NWS Forecaster Discussion




Area forecast discussion 
National Weather Service New Orleans la 
409 am CST sun Dec 21 2014 


Short term... 


A series of weak vorticity maxima will slide across the area on 
the back of a strong 110 knot jet streak parked over the Gulf 
Coast. The area will be in a favorable for region for increased 
upper level Omega. However...the overall atmosphere will remain 
very dry with precipitable water values generally running around 0.75 inches. 
Thus...rainfall is not expected over most of the land based zones 
today. However...a stationary front will remain in place over the 
northern Gulf of Mexico. This frontal boundary will serve as a 
focus for some scattered to numerous showers for the offshore coastal 
waters and immediate coastal areas of Louisiana. These showers will 
be produced by a region of weak isentropic forcing along and north 
of the boundary that will be aided by the increasing Omega aloft 
associated with a passing vorticity lobe. With more cloud cover in 
place along the coast...temperatures will remain cooler in these 
areas. However...inland locations will see temperatures climb back 
to more normal levels for late December with readings rising into 
the lower 60s. 


Tonight...there will be increasing low level moisture across the 
area as winds veer from the northeast to the southeast. Overall 
boundary layer flow will be very light...and some areas of fog 
could develop away from the tidal lakes and coast. Have included a 
mention of fog in the grids for late tonight and early tomorrow 
morning. Some of the fog could turn dense at times around 
daybreak. Outside of the fog threat...conditions will remain 
favorable for offshore showers as a stationary boundary lingers 
over the northern Gulf. Overall rain chances will be lower 
tomorrow as overall Omega aloft decreases in the wake of a 
departing vorticity lobe...and do not expect to the showers persist 
over the immediate Louisiana coast tomorrow. As a result...a dry 
forecast is in place for all land based zones tomorrow...except 
for areas in the immediate vicinity of Head of Passes in lower 
Plaquemines Parish. With onshore flow and increasing moisture in 
place...along with less overall cloud cover temperatures will 
easily rise into the upper 60s and lower 70s tomorrow afternoon. 


A major pattern change will begin to impact the region tomorrow 
night as an upper level trough centered over the plains begins to 
rapidly deepen. This rapid deepening will driven by some strong 
northern stream vorticity descending down The Spine of The 
Rockies. An attendant upper level jet in in excess of 120 knots will 
accompany this northern stream feature as it dives into Texas. As 
this jet rounds the base of the trough...it will begin to take on 
a more neutral tilt and also start to lift to the northeast. A 
strong cold front will be found over central Texas by daybreak on 
Tuesday...and as the jet streak rounds the base of the 
trough...low level cyclogenesis will begin in eastern Texas. 


This developing low will force the lingering boundary over the 
northern Gulf of Mexico northward late Monday night. Models 
indicate that very strong Omega will develop across the forecast 
due to the combination of increased isentropic forcing in the low 
levels...and the development of a jet couplet over the Gulf south 
in the upper levels. With ample lift and increasing instability in 
place...expect to see rainfall develop in the late evening hours 
and become more likely as the night proceeds. Model soundings 
indicate that a stable layer will continue to exist in the low 
levels...but that ample elevated cape exists above 900mb. Have 
kept in a mention of thunder for areas along and north of the I-10 
corridor where overall Omega is expected to greatest. There could 
be some stronger convection late Monday night given the decent 
lapse rates aloft with hail being the primary threat. 


Tuesday will be a very active day...with a fairly decent threat 
for some severe weather existing. The strong upper level trough 
will become negatively tilted over the Southern Plains and Ozarks 
by Tuesday evening and start to quickly lift to the northeast on 
the back of a strong 120 knot jet streak. As the upper level 
trough begins to lift out...the surface low in Texas will track 
across Louisiana and Mississippi and force a strong cold front 
through the area Tuesday evening into Tuesday night. 


The region will remain centered beneath a jet couplet and 
overall upper level forcing will be very strong. 700mb Omega 
values will be in excess -25mb/S over most of the area. These 
values are very supportive of deep and sustained updrafts in any 
convection that does develop. In addition...overall instability 
will increase through the day...as daytime highs rise into the 
lower to middle 70s and lapse rates aloft remain decent. Cape 
values should rise to around 1000 j/kg and lifted indices will 
increase to around -4. Thus...there will be little in the way of 
convective inhibition through the day. Shear values will also be 
fairly impressive with 0-3 km shear 30-40 knots in the afternoon 
and evening hours. Directional shear will be somewhat limited...and 
overall helicity values will peak out around 150 m2/s2. Given these 
parameters...the threat for tornadoes will be somewhat 
reduced...and the threat for strong straight line winds will be 
increased. However...all convective modes will be possible with 
this system throughout the day on Tuesday and into early Tuesday 
night. Most of the convection will likely be pre-frontal...with 
the main wind shift and surge of colder air generally coming in 
late Tuesday evening over western zones and during the late overnight 
hours for eastern zones. Conditions will clear from west to east 
with this frontal passage...and expect to see lingering convection 
and a threat for isolated severe thunderstorm activity over the 
coastal Mississippi zones through late Tuesday night. Temperatures 
will be a good 10 degrees cooler over most areas Tuesday 
night...but the main surge of colder air will not really be felt 
until during the day on Wednesday. 


Long term... 


The upper level trough axis will pass through the area Wednesday 
and Wednesday night. The Heart of the cold pool will also pass 
over the area during this time frame. 1000-500mb thicknesses will 
plunge to around 5430 meters and 925mb temperatures will drop to 
around 0 degrees celsius by Wednesday afternoon. This correlates 
to a surface temperature in the lower 50s. With clear skies in 
place Wednesday night...readings will easily cool into the 30s 
over most areas. A light freeze may occur over parts of southwest 
Mississippi and the Northshore late Wednesday night. Conditions 
will also be very breezy as the trough axis moves through Wednesday 
into Wednesday night. 


The trough axis will finally begin to pull east of the area on 
Thursday...with strong subsidence and very dry air taking hold of 
the area. Sunny skies and cooler than normal temperatures can be 
expected. Daytime highs will only climb into the middle to upper 
50s and lows on Thursday night will drop back into the lower 40s 
over inland locations as conditions radiate out. 


Both the Euro and the GFS indicate that another short wave trough 
will slide through the area for Friday and Saturday. The Euro has 
a sharper trough slide through the area...and thus Sparks off more 
rainfall over the area. The GFS has a shallower trough that brings 
increasing clouds...but lower overall probability of precipitation to the region for 
Friday and Saturday. At this time...have made little change to the 
forecast and keep a slight chance of probability of precipitation and cloudy skies over 
the area for Friday and Saturday. A frontal boundary should slide 
through the area during the day on Saturday. Weak onshore flow and 
some warm air advection in advance of the boundary should allow 
temperatures to rise back into the middle to upper 60s on 
Saturday. 


&& 


Aviation... 


A brief improvement to VFR ceiling and visibility OK conditions made it as far as 
kmcb-khdc-kbtr line but has retreated north with generally MVFR ceilings 
reported at all but kmcb. MVFR conditions should prevail for much of 
the taf period with some brief improvement to VFR based ceilings around 
sunset. Marine layer advection onset after 22/02z to bring MVFR ceilings 
back into terminals for overnight hours. Some radiational fog may 
bring visibilities to MVFR levels at the more interior locations generally 
after 09z. 24/rr 


&& 


Marine... 


Fringe of Continental high pressure area extends into the central 
Gulf and the gradient should relax throughout the day. The high 
moves east overnight with short-fetched onshore flow developing 
Monday in advance of developing frontal system in the plains states. 
Onshore flow becomes deeper and longer fetched Monday night to bring 
increase in winds and seas at Small Craft Advisory levels by late 
Tuesday into Tuesday night. Frontal passage still looks to bring 
hard wind shift with strong cold air advection Wednesday for high 
end Small Craft Advisory winds with low end gale gusts. Conditions 
improve steadily heading into Thursday as center of high becomes 
settled over the north Gulf. 24/rr 


&& 


Decision support... 


Dss code...green. 
Deployed...none. 
Activation...none. 
Activities...slurry support 


Decision support services (dss) code legend 
green = no weather impacts that require action 
blue = long fused watch/warning/advisory in effect or high 
visibility event 
yellow = heightened impacts with short fused 
watch/warning/advisory issuances; radar support 
Orange = high impacts - slight to moderate risk severe; nearby 
tropical events; hazmat or other large episodes 
red = full engagement for moderate to high risk severe 
and/or direct tropical threats; events of National 
significance. 


&& 


Preliminary point temps/pops... 
mcb 61 46 68 59 / 0 0 0 50 
btr 62 48 69 60 / 0 0 0 50 
asd 62 48 69 59 / 10 10 0 50 
msy 61 53 69 61 / 10 10 0 50 
gpt 61 51 69 61 / 10 10 10 40 
pql 63 49 71 61 / 10 10 10 40 


&& 


Lix watches/warnings/advisories... 
la...none. 
GM...none. 
MS...none. 
GM...none. 
&& 


$$ 


32 












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