Slidell, Louisiana Weather Conditions

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Current Conditions

  • 74°
  • Light Rain
  • Wind: North 6 mph
  • Humidity: 93%
  • Visibility: 10.0 miles
  • Dew Point: 72°
  • Pressure: 29.96 in. +

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Next 12 Hours

1  am
4  am
7  am
10  am
1  pm
Chance of a Thunderstorm
Chance of T-storms
Chance of a Thunderstorm
Chance of T-storms
Chance of a Thunderstorm
Chance of T-storms
Chance of a Thunderstorm
Chance of T-storms
Chance of a Thunderstorm
Chance of T-storms
77°
75°
73°
82°
84°
Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Wednesday
  • Chance of a Thunderstorm
  • High: 88 °
  • Low: 73 °
  • Chance of T-Storms
  • Thursday
  • Chance of a Thunderstorm
  • High: 90 °
  • Low: 73 °
  • Chance of T-Storms
  • Friday
  • Chance of a Thunderstorm
  • High: 88 °
  • Low: 72 °
  • Chance of T-Storms
  • Saturday
  • Partly Cloudy
  • High: 88 °
  • Low: 73 °
  • Partly Cloudy
  • Sunday
  • Partly Cloudy
  • High: 90 °
  • Low: 73 °
  • Partly Cloudy

Forecast for Slidell, Louisiana

Updated: 10:00 PM CDT on September 02, 2014

  • Wednesday

    Overcast with a chance of a thunderstorm and a chance of rain in the morning, then partly cloudy with a chance of a thunderstorm and a chance of rain. High of 88F. Winds less than 5 mph. Chance of rain 50%.

  • Wednesday Night

    Partly cloudy with a chance of a thunderstorm and a chance of rain. Low of 73F. Winds less than 5 mph. Chance of rain 30%.

  • Thursday

    Partly cloudy with a chance of a thunderstorm and a chance of rain. High of 90F. Winds less than 5 mph. Chance of rain 50%.

  • Thursday Night

    Partly cloudy with a chance of a thunderstorm and a chance of rain. Low of 73F. Winds less than 5 mph. Chance of rain 30%.

  • Friday

    Partly cloudy with a chance of a thunderstorm and a chance of rain. High of 88F with a heat index of 93F. Winds less than 5 mph. Chance of rain 50%.

  • Friday Night

    Partly cloudy with a chance of a thunderstorm and rain in the evening, then clear with a chance of a thunderstorm and rain. Low of 72F. Winds less than 5 mph. Chance of rain 40%.

  • Saturday

    Partly cloudy. Fog early. High of 88F. Winds from the ENE at 5 to 10 mph shifting to the SE in the afternoon.

  • Saturday Night

    Clear with a chance of a thunderstorm and rain. Low of 73F. Winds less than 5 mph. Chance of rain 40%.

  • Sunday

    Partly cloudy. Fog early. High of 90F. Winds less than 5 mph.

  • Sunday Night

    Partly cloudy with a chance of a thunderstorm. Low of 73F. Winds from the SSW at 5 to 10 mph. Chance of rain 20%.

  • Monday

    Clear. High of 90F with a heat index of 95F. Winds less than 5 mph.

  • Monday Night

    Clear. Low of 73F. Winds from the South at 5 to 10 mph.

  • Tuesday

    Clear. High of 88F. Winds from the NNE at 5 to 10 mph shifting to the SSE in the afternoon.

  • Tuesday Night

    Clear. Low of 73F. Winds from the SSE at 5 to 10 mph.

  • Wednesday

    Clear. High of 88F. Winds less than 5 mph.

  • Wednesday Night

    Clear with a chance of a thunderstorm. Low of 73F. Winds less than 5 mph. Chance of rain 40%.

  • Thursday

    Partly cloudy with a chance of a thunderstorm. High of 88F. Winds less than 5 mph. Chance of rain 40%.

  • Thursday Night

    Partly cloudy. Low of 75F. Winds less than 5 mph.

  • Friday

    Partly cloudy with a chance of a thunderstorm. High of 88F. Winds from the ENE at 5 to 10 mph. Chance of rain 40%.

  • Friday Night

    Partly cloudy. Low of 73F. Winds from the ENE at 5 to 10 mph.

  • Saturday

    Clear. High of 88F. Winds from the ENE at 5 to 10 mph.

  • Saturday Night

    Clear. Low of 73F. Winds from the ENE at 5 to 10 mph.

Severe Weather Alert Descriptions

 Local Storm Report 



09/02/2014 1018 PM

Lakefront Airport, Orleans Parish.

Marine tstm wind m40 mph, reported by ASOS.


            33032g40mph




Personal Weather Stations

Personal Weather Stations [Add your weather station!]

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

Updated: 1:57 AM CDT

Temperature: 73.6 °F Dew Point: 72 °F Humidity: 95% Wind: Calm Pressure: 29.92 in Hourly Precipitation: 0.00 in Heat Index: 70 °F Graphs

Location: Slidell, LA

Updated: 1:46 AM CDT

Temperature: 73.4 °F Dew Point: 73 °F Humidity: 97% Wind: SSE at 1.0 mph Pressure: 29.94 in Hourly Precipitation: 0.01 in Heat Index: - Graphs

Location: Oak Harbor, K4QAL, Slidell, LA

Updated: 1:55 AM CDT

Temperature: 75.4 °F Dew Point: 73 °F Humidity: 92% Wind: NNE at 1.0 mph Pressure: 29.93 in Hourly Precipitation: 0.00 in Heat Index: 75 °F Graphs

Location: Oak Harbor, Slidell, LA

Updated: 1:57 AM CDT

Temperature: 76.0 °F Dew Point: 74 °F Humidity: 92% Wind: NE at 1.0 mph Pressure: 29.94 in Hourly Precipitation: 0.01 in Heat Index: 76 °F Graphs

Location: Timber Ridge, Slidell, LA

Updated: 10:58 PM CDT

Temperature: 74.3 °F Dew Point: 70 °F Humidity: 85% Wind: Calm Pressure: 30.08 in Hourly Precipitation: 0.06 in Heat Index: 74 °F Graphs

Location: Bayou Liberty, Slidell, LA

Updated: 1:42 AM CDT

Temperature: 73.5 °F Dew Point: 71 °F Humidity: 90% Wind: Calm Pressure: 29.96 in Hourly Precipitation: - Heat Index: 71 °F Graphs

Location: Tammany Yacht Club, Slidell, LA

Updated: 11:57 PM MST

Temperature: 77.3 °F Dew Point: 74 °F Humidity: 90% Wind: East at 4.0 mph Pressure: 29.95 in Hourly Precipitation: 0.00 in Heat Index: 79 °F Graphs

Location: Circle O Acres, Slidell, LA

Updated: 1:56 AM CDT

Temperature: 74.2 °F Dew Point: 70 °F Humidity: 87% Wind: Calm Pressure: 29.94 in Hourly Precipitation: 0.00 in Heat Index: 73 °F Graphs

Location: LAKEVIEW DR., Slidell, LA

Updated: 1:57 AM CDT

Temperature: 77.2 °F Dew Point: 76 °F Humidity: 95% Wind: ENE at 4.0 mph Pressure: 29.93 in Hourly Precipitation: 0.00 in Heat Index: 78 °F Graphs

Location: RAWS SELA PORTABLE LA US, Lacombe, LA

Updated: 12:34 AM CDT

Temperature: 72 °F Dew Point: 72 °F Humidity: 99% Wind: NE at 1 mph Pressure: - Hourly Precipitation: 0.07 in Heat Index: - Graphs

Location: Pearl Hickory, Pearl River, LA

Updated: 1:54 AM CDT

Temperature: 72.9 °F Dew Point: 72 °F Humidity: 96% Wind: Calm Pressure: 29.72 in Hourly Precipitation: - Heat Index: - Graphs

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

Updated: 12:47 AM CDT

Temperature: 73 °F Dew Point: 72 °F Humidity: 98% Wind: East at 2 mph Pressure: - Hourly Precipitation: 0.09 in Heat Index: - Graphs

Location: Hickory, Pearl River, LA

Updated: 1:54 AM CDT

Temperature: 74.5 °F Dew Point: 72 °F Humidity: 92% Wind: North at 2.5 mph Pressure: 29.95 in Hourly Precipitation: 0.03 in Heat Index: 73 °F Graphs

Location: Bayou Acres, Mandeville, LA

Updated: 1:56 AM CDT

Temperature: 72.7 °F Dew Point: 72 °F Humidity: 96% Wind: North at 1.7 mph Pressure: 30.00 in Hourly Precipitation: - Heat Index: - Graphs

Location: The Timbers, Mandeville, LA

Updated: 1:55 AM CDT

Temperature: 72.5 °F Dew Point: 70 °F Humidity: 93% Wind: North at 2.2 mph Pressure: 29.98 in Hourly Precipitation: 0.01 in Heat Index: - Graphs

Location: Soult Street/Molitor Street, Mandeville, LA

Updated: 1:57 AM CDT

Temperature: 72.7 °F Dew Point: 73 °F Humidity: 100% Wind: Calm Pressure: 29.98 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Woodlands, Mandeville, LA

Updated: 1:57 AM CDT

Temperature: 72.3 °F Dew Point: 71 °F Humidity: 97% Wind: Calm Pressure: 30.01 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Mandeville, Mandeville, LA

Updated: 1:52 AM CDT

Temperature: 72.9 °F Dew Point: 72 °F Humidity: 96% Wind: Calm Pressure: 29.99 in Hourly Precipitation: 0.01 in Heat Index: - Graphs

Location: Deval Estates, Mandeville, LA

Updated: 1:57 AM CDT

Temperature: 72.9 °F Dew Point: 72 °F Humidity: 97% Wind: Calm Pressure: 29.82 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Old Mandeville, Mandeville, LA

Updated: 1:42 AM CDT

Temperature: 72.7 °F Dew Point: 72 °F Humidity: 96% Wind: Calm Pressure: 29.82 in Hourly Precipitation: - Heat Index: - Graphs

Location: SHARP ROAD, Mandeville, LA

Updated: 1:57 AM CDT

Temperature: 72.3 °F Dew Point: 70 °F Humidity: 94% Wind: ESE at 2.0 mph Pressure: 29.98 in Hourly Precipitation: 0.01 in Heat Index: - Graphs

Location: Mandeville, Mandeville, LA

Updated: 1:51 AM CDT

Temperature: 72.6 °F Dew Point: 71 °F Humidity: 96% Wind: Calm Pressure: 29.97 in Hourly Precipitation: - Heat Index: - Graphs

Location: Carriere, MS

Updated: 1:57 AM CDT

Temperature: 73.6 °F Dew Point: 73 °F Humidity: 98% Wind: Calm Pressure: 29.90 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Chateau Village Subdivision, Mandeville, LA

Updated: 1:57 AM CDT

Temperature: 72.9 °F Dew Point: 72 °F Humidity: 97% Wind: Calm Pressure: 29.83 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Covington / Abita Springs, Covington, LA

Updated: 1:57 AM CDT

Temperature: 72.0 °F Dew Point: 71 °F Humidity: 96% Wind: WNW at 2.0 mph Pressure: 30.02 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Shoreline Park, Bay St. Louis, MS

Updated: 1:57 AM CDT

Temperature: 76.0 °F Dew Point: - Humidity: - Wind: ESE at 2.0 mph Pressure: 29.94 in Hourly Precipitation: 0.04 in Heat Index: - Graphs

Location: Hide_A_Way Lake ~OWX, Carriere, MS

Updated: 1:56 AM CDT

Temperature: 72.7 °F Dew Point: 70 °F Humidity: 92% Wind: West at 2.0 mph Pressure: 29.94 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Estates of Northpark, Covington, LA

Updated: 1:50 AM CDT

Temperature: 73.2 °F Dew Point: 72 °F Humidity: 96% Wind: Calm Pressure: 29.89 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Joe's Redneck Weather, Waveland, MS

Updated: 1:57 AM CDT

Temperature: 77.4 °F Dew Point: 77 °F Humidity: 99% Wind: Calm Pressure: 29.91 in Hourly Precipitation: 0.02 in Heat Index: 79 °F Graphs

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

Updated: 1:57 AM CDT

Temperature: 75.9 °F Dew Point: 73 °F Humidity: 92% Wind: SW at 1.6 mph Pressure: 29.85 in Hourly Precipitation: 0.02 in Heat Index: 76 °F Graphs

Location: Diamondhead, Diamondhead, MS

Updated: 1:57 AM CDT

Temperature: 74.7 °F Dew Point: 74 °F Humidity: 99% Wind: Calm Pressure: 29.77 in Hourly Precipitation: 0.01 in Heat Index: 72 °F Graphs

Location: Diamondhead, Diamondhead, MS

Updated: 1:53 AM CDT

Temperature: 74.5 °F Dew Point: 73 °F Humidity: 95% Wind: Calm Pressure: 29.85 in Hourly Precipitation: - Heat Index: 72 °F Graphs

MSN Maps of:

Temp: Dew Point: Humidity Wind Pressure Hr Precip -

NWS Forecaster Discussion




Area forecast discussion...updated 
National Weather Service New Orleans la 
939 PM CDT Tuesday Sep 2 2014 


Update... 
in the process of updating zones to bring probability of precipitation more in line with 
current trends. Vorticity structure that is amplifying while 
moving across the forecast area is able to maintain nocturnal 
convection. The probability of precipitation may be a bit high but are in line with 
existing rain areas and anticipated downstream movement into the 
South Shore and Mississippi coast during the next couple of hours. 
Also adjusted quantitative precipitation forecast to also reflect current trends. No other 
changes at this time. 


Aviation... 
terminal forecasts will be handled with amendments as needed for 
ongoing advancing convection. Otherwise...VFR conditions expected 
outside convection. Gust potential from storms should fall in the 
30 to 35 knot range tonight...possibly 35-45kt range Wednesday. 


&& 


Marine... 
no significant changes to forecast package at this time. 


&& 


Decision support... 
dss code...yellow. 
Deployed...none. 
Activation...none. 
Activities...short-fused radar...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. 




&& 


Previous discussion... /issued 802 PM CDT Tuesday Sep 2 2014/ 


.Sounding discussion... 


The moisture content in the atmosphere remains high this evening 
with a precipitable water value of 2.17 inches. MLCAPES are around 
2200 j/kg and the lifted index is calculated at -7.1. So 
thunderstorms across the northern part of the County Warning Area 
/north of I-12/ have plenty of instability and lots of moisture to 
produce 1 to 2 inches of rainfall in some spots. The winds veer 
with height from south and southwest near the surface to from the 
north in the upper troposphere. A maximum wind speed of 31 knots 
was found at 7.8 miles above the ground. 


00z balloon info: a routine launch this evening. The balloon 
went 23 miles downrange and burst over Central Lake Pontchartrain at a 
height of 21.2 miles above the ground. 


Ansorge 


Previous discussion... /issued 414 PM CDT Tuesday Sep 2 2014/ 


Short term... 


A persistent upper level ridge will remain parked over the 
forecast area through Thursday. In the low to mid-levels...the 
ridge axis will be displaced to the east of the forecast area 
which will allow for deep layer onshore flow to continue. With 
strong onshore flow in place...a deep tropical airmass will linger 
over the area. Precipitable water values of 2.25 inches will be 
common...which combined with ample instability during the 
afternoon hours will allow for scattered shower and thunderstorm 
development. With weak forcing aloft in place...any convection 
will tend to form along low level mesoscale boundaries such as 
seabreeze fronts where convergence is maximized. The deepest 
convection could produce localized rain amounts of up to an 
inch given the high precipitation efficiency expected. 
Temperatures will be near seasonal norms through the short term 
period. 


Long term... 


The upper level ridge begin to break down a bit on Friday as a weak 
inverted trough moves into the eastern Gulf of Mexico. With a 
slight increase in Omega across the area...scattered convection 
will tend to develop earlier in the day and last later into the 
evening. The deep tropical moisture will continue over the 
area...so locally heavy rainfall of 1 to 2 inches will be 
possible with the strongest storms. The inverted trough axis will 
continue to move through the central Gulf Coast on 
Saturday...keeping scattered diurnally induced convection in 
place. This trough will finally shear out early next 
week...allowing the strong upper level ridge to build back over the 
area for Monday and Tuesday. Onshore flow will continue in the 
low levels...so low end chance probability of precipitation will be place each day. 
Temperatures will be little changed through the period...and will 
generally range near seasonal norms. 


Aviation... 


Latest surface observation show cloud decks right around the VFR/MVFR line. 
Scattered convection has developed with thunderstorms tracking from 
SW to NE. Most cells are short lived but can produce heavy rain 
leading to IFR visible at times. Otherwise...VFR conditions will prevail 
late this evening and overnight as showers and storms dissipate. Mcb 
and hum could see light fog near sunrise Wednesday but not expecting 
it to last too long. 


Meffer 


Marine... 


A persistent surface ridge extending across the eastern Gulf of 
Mexico will keep a southeast flow of around 10 knots in place 
through the period. Seas will be somewhat elevated at 2 to 4 feet over 
the western waters through tomorrow as a swell train of 1 to 2 
feet emanating from Tropical Storm Debby moves through the area. 
As the system moves into Mexico...the swell will diminish and 
expect to see a return to calmer seas of 1 to 2 feet by Friday. 


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 73 93 72 93 / 80 50 30 50 
btr 74 93 73 93 / 80 50 30 50 
asd 75 92 74 92 / 60 50 30 50 
msy 77 90 77 91 / 60 50 30 50 
gpt 76 92 75 91 / 40 50 30 50 
pql 74 93 73 92 / 30 50 30 30 


&& 


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


$$ 
















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