Slidell, Louisiana Weather Conditions

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Current Conditions

  • 78°
  • Clear
  • Wind: SE 4 mph
  • Humidity: 90%
  • Visibility: 10.0 miles
  • Dew Point: 75°
  • Pressure: 30.01 in. 0

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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
79°
77°
77°
86°
86°
Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Tuesday
  • Chance of a Thunderstorm
  • High: 88 °
  • Low: 75 °
  • Chance of T-Storms
  • 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: 90 °
  • Low: 73 °
  • Chance of a Thunderstorm
  • Saturday
  • Partly Cloudy
  • High: 90 °
  • Low: 73 °
  • Partly Cloudy

Forecast for Slidell, Louisiana

Updated: 10:00 PM CDT on September 01, 2014

  • Tuesday

    Overcast with a chance of a thunderstorm and a chance of rain. High of 88F with a heat index of 95F. Winds from the SSE at 5 to 10 mph. Chance of rain 30%.

  • Tuesday Night

    Partly cloudy with a chance of a thunderstorm and a chance of rain. Low of 75F. Winds less than 5 mph. Chance of rain 20%.

  • Wednesday

    Partly cloudy with a chance of a thunderstorm and a chance of rain. High of 88F. Winds from the East at 5 to 10 mph. Chance of rain 30%.

  • Wednesday Night

    Partly cloudy in the evening, then clear. Low of 73F. Winds less than 5 mph.

  • Thursday

    Clear 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 90F with a heat index of 95F. Winds from the SSW at 5 to 10 mph. Chance of rain 40%.

  • Thursday Night

    Partly cloudy in the evening, then clear. Low of 73F. Winds from the SE at 5 to 10 mph.

  • Friday

    Partly cloudy with a chance of a thunderstorm and rain in the afternoon. Fog early. High of 90F. Winds from the NE at 5 to 10 mph shifting to the ESE in the afternoon. Chance of rain 20%.

  • Friday Night

    Clear with a chance of a thunderstorm and rain. Low of 73F. Winds from the SSE at 5 to 10 mph.

  • Saturday

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

  • Saturday Night

    Partly cloudy with a chance of a thunderstorm. Low of 73F. Winds from the SSW at 5 to 10 mph. Chance of rain 40%.

  • Sunday

    Clear with a chance of a thunderstorm. High of 90F. Winds less than 5 mph. Chance of rain 40%.

  • Sunday Night

    Clear with a chance of a thunderstorm. Low of 73F. Winds from the SSW at 5 to 10 mph. Chance of rain 40%.

  • Monday

    Clear. High of 90F. Winds less than 5 mph.

  • Monday Night

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

  • Tuesday

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

  • Tuesday Night

    Clear. Low of 73F. Winds less than 5 mph.

  • Wednesday

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

  • Wednesday Night

    Clear with a chance of a thunderstorm. Low of 75F. Winds less than 5 mph. Chance of rain 40%.

  • Thursday

    Clear with a chance of a thunderstorm. High of 88F. Winds less than 5 mph. Chance of rain 50%.

  • Thursday Night

    Clear. Low of 73F. Winds less than 5 mph.

  • Friday

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

  • Friday Night

    Clear. Low of 73F. Winds less than 5 mph.

Personal Weather Stations

Personal Weather Stations [Add your weather station!]

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

Updated: 1:40 AM CDT

Temperature: 79.2 °F Dew Point: 77 °F Humidity: 94% Wind: Calm Pressure: 29.97 in Hourly Precipitation: 0.00 in Heat Index: 84 °F Graphs

Location: Slidell, LA

Updated: 1:29 AM CDT

Temperature: 78.8 °F Dew Point: 77 °F Humidity: 95% Wind: Calm Pressure: 30.00 in Hourly Precipitation: 0.00 in Heat Index: 83 °F Graphs

Location: Oak Harbor, K4QAL, Slidell, LA

Updated: 1:35 AM CDT

Temperature: 82.0 °F Dew Point: 78 °F Humidity: 87% Wind: SSE at 4.0 mph Pressure: 29.99 in Hourly Precipitation: 0.00 in Heat Index: 91 °F Graphs

Location: Oak Harbor, Slidell, LA

Updated: 1:41 AM CDT

Temperature: 82.7 °F Dew Point: 79 °F Humidity: 88% Wind: SSE at 4.0 mph Pressure: 30.00 in Hourly Precipitation: 0.00 in Heat Index: 93 °F Graphs

Location: Bayou Liberty, Slidell, LA

Updated: 1:27 AM CDT

Temperature: 77.0 °F Dew Point: 73 °F Humidity: 88% Wind: Calm Pressure: 30.01 in Hourly Precipitation: - Heat Index: 78 °F Graphs

Location: Tammany Yacht Club, Slidell, LA

Updated: 11:40 PM MST

Temperature: 82.2 °F Dew Point: 79 °F Humidity: 90% Wind: SSE at 8.0 mph Pressure: 30.00 in Hourly Precipitation: 0.00 in Heat Index: 92 °F Graphs

Location: Circle O Acres, Slidell, LA

Updated: 1:41 AM CDT

Temperature: 79.0 °F Dew Point: 74 °F Humidity: 85% Wind: Calm Pressure: 29.99 in Hourly Precipitation: 0.00 in Heat Index: 83 °F Graphs

Location: LAKEVIEW DR., Slidell, LA

Updated: 1:39 AM CDT

Temperature: 82.3 °F Dew Point: 79 °F Humidity: 90% Wind: SE at 11.0 mph Pressure: 29.99 in Hourly Precipitation: 0.00 in Heat Index: 92 °F Graphs

Location: RAWS SELA PORTABLE LA US, Lacombe, LA

Updated: 12:34 AM CDT

Temperature: 81 °F Dew Point: 77 °F Humidity: 89% Wind: ESE at 6 mph Pressure: - Hourly Precipitation: 0.00 in Heat Index: 88 °F Graphs

Location: Pearl Hickory, Pearl River, LA

Updated: 1:37 AM CDT

Temperature: 75.2 °F Dew Point: 74 °F Humidity: 96% Wind: Calm Pressure: 29.75 in Hourly Precipitation: - Heat Index: 73 °F Graphs

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

Updated: 12:47 AM CDT

Temperature: 76 °F Dew Point: 75 °F Humidity: 97% Wind: Calm Pressure: - Hourly Precipitation: 0.00 in Heat Index: 75 °F Graphs

Location: Hickory, Pearl River, LA

Updated: 1:40 AM CDT

Temperature: 76.5 °F Dew Point: 74 °F Humidity: 93% Wind: Calm Pressure: 29.97 in Hourly Precipitation: 0.00 in Heat Index: 77 °F Graphs

Location: Bayou Acres, Mandeville, LA

Updated: 1:37 AM CDT

Temperature: 77.7 °F Dew Point: 76 °F Humidity: 95% Wind: Calm Pressure: 30.01 in Hourly Precipitation: - Heat Index: 80 °F Graphs

Location: The Timbers, Mandeville, LA

Updated: 1:40 AM CDT

Temperature: 78.8 °F Dew Point: 76 °F Humidity: 90% Wind: Calm Pressure: 30.00 in Hourly Precipitation: 0.00 in Heat Index: 82 °F Graphs

Location: Woodlands, Mandeville, LA

Updated: 1:40 AM CDT

Temperature: 79.0 °F Dew Point: 77 °F Humidity: 93% Wind: Calm Pressure: 30.04 in Hourly Precipitation: 0.00 in Heat Index: 83 °F Graphs

Location: Mandeville, Mandeville, LA

Updated: 1:34 AM CDT

Temperature: 81.4 °F Dew Point: 78 °F Humidity: 90% Wind: East at 3.0 mph Pressure: 30.01 in Hourly Precipitation: 0.00 in Heat Index: 90 °F Graphs

Location: Deval Estates, Mandeville, LA

Updated: 1:40 AM CDT

Temperature: 76.8 °F Dew Point: 77 °F Humidity: 99% Wind: Calm Pressure: 29.84 in Hourly Precipitation: 0.00 in Heat Index: 77 °F Graphs

Location: Old Mandeville, Mandeville, LA

Updated: 1:36 AM CDT

Temperature: 78.3 °F Dew Point: 77 °F Humidity: 95% Wind: Calm Pressure: 29.85 in Hourly Precipitation: - Heat Index: 81 °F Graphs

Location: SHARP ROAD, Mandeville, LA

Updated: 1:40 AM CDT

Temperature: 76.3 °F Dew Point: 74 °F Humidity: 94% Wind: Calm Pressure: 30.00 in Hourly Precipitation: 0.00 in Heat Index: 76 °F Graphs

Location: Mandeville, Mandeville, LA

Updated: 1:35 AM CDT

Temperature: 77.1 °F Dew Point: 75 °F Humidity: 94% Wind: Calm Pressure: 29.99 in Hourly Precipitation: - Heat Index: 78 °F Graphs

Location: Carriere, MS

Updated: 1:41 AM CDT

Temperature: 75.8 °F Dew Point: 75 °F Humidity: 98% Wind: Calm Pressure: 29.93 in Hourly Precipitation: 0.00 in Heat Index: 75 °F Graphs

Location: Chateau Village Subdivision, Mandeville, LA

Updated: 1:40 AM CDT

Temperature: 81.0 °F Dew Point: 78 °F Humidity: 91% Wind: Calm Pressure: 29.85 in Hourly Precipitation: 0.00 in Heat Index: 89 °F Graphs

Location: Covington / Abita Springs, Covington, LA

Updated: 1:40 AM CDT

Temperature: 74.8 °F Dew Point: 74 °F Humidity: 97% Wind: Calm Pressure: 30.03 in Hourly Precipitation: 0.00 in Heat Index: 72 °F Graphs

Location: Shoreline Park, Bay St. Louis, MS

Updated: 1:41 AM CDT

Temperature: 80.2 °F Dew Point: - Humidity: - Wind: SE at 1.0 mph Pressure: 30.02 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Hide_A_Way Lake ~OWX, Carriere, MS

Updated: 1:40 AM CDT

Temperature: 76.3 °F Dew Point: 74 °F Humidity: 92% Wind: Calm Pressure: 29.97 in Hourly Precipitation: 0.00 in Heat Index: 76 °F Graphs

Location: Estates of Northpark, Covington, LA

Updated: 1:33 AM CDT

Temperature: 77.4 °F Dew Point: 76 °F Humidity: 94% Wind: Calm Pressure: 29.90 in Hourly Precipitation: 0.00 in Heat Index: 79 °F Graphs

Location: Joe's Redneck Weather, Waveland, MS

Updated: 1:41 AM CDT

Temperature: 82.9 °F Dew Point: 76 °F Humidity: 79% Wind: Calm Pressure: 29.99 in Hourly Precipitation: 0.00 in Heat Index: 91 °F Graphs

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

Updated: 1:40 AM CDT

Temperature: 82.2 °F Dew Point: 74 °F Humidity: 76% Wind: South at 1.6 mph Pressure: 29.93 in Hourly Precipitation: 0.00 in Heat Index: 88 °F Graphs

Location: Diamondhead, Diamondhead, MS

Updated: 1:40 AM CDT

Temperature: 79.0 °F Dew Point: 76 °F Humidity: 92% Wind: Calm Pressure: 29.53 in Hourly Precipitation: 0.00 in Heat Index: 83 °F Graphs

Location: Diamondhead, Diamondhead, MS

Updated: 1:39 AM CDT

Temperature: 78.3 °F Dew Point: 75 °F Humidity: 91% Wind: Calm Pressure: 29.93 in Hourly Precipitation: - Heat Index: 81 °F Graphs

MSN Maps of:

Temp: Dew Point: Humidity Wind Pressure Hr Precip -

NWS Forecaster Discussion




Area forecast discussion 
National Weather Service New Orleans la 
1201 am CDT Tuesday Sep 2 2014 


Aviation... 
typical Summer convective coverage on steady state Gulf Breeze 
flow. VFR conditions to prevail outside convection but lowering to 
MVFR ceilings/visibility temporarily during thunderstorms and rain/rain showers generally between 17z- 
21z. 24/rr 


&& 


Previous discussion... /issued 809 PM CDT Monday Sep 1 2014/ 


.Sounding discussion... 


A very moist atmospheric profile was sampled this evening and the 
temperature generally following moist adiabats from about 800mb to 
the tropopause. A precipitable water of 2.35 inches is nearing the 
99th percentile for this time of year. There remains a fair amount 
of instability with MLCAPES around 1200 j/kg this evening. There 
are just a few thunderstorms remaining at this time and these will 
dissipate during the remainder of the evening. Winds from the 
surface to 700mb were between 15 and 20 knots from the south. 
Winds in the middle-levels and upper levels /700mb-100mb/ were from 
the west at around 10 knots and in the stratosphere the winds were 
from the east. 


00z balloon info: a routine and successful flight this evening. 
The balloon terminated at a height of 21.2 miles above the 
ground and was 24 miles downrange over the northwest part of Lake 
Pontchartrain. 


Ansorge 


Previous discussion... /issued 325 PM CDT Monday Sep 1 2014/ 


Short term... 


A lingering inverted trough over the lower Mississippi Valley will 
continue to shear out as it moves inland tonight. By tomorrow...a 
strengthening upper level ridge axis will build over the forecast 
area. This ridging will continue to intensify into Wednesday. 
Further down in the atmosphere...continued onshore flow will 
dominate in the low to mid-levels. This onshore flow will keep a 
deep layer of Gulf moisture over the area. As a result...precipitable water values 
will remain in excess of 2 inches through midweek. Even with some 
increased subsidence and warming aloft...there should be enough 
instability during the afternoon hours to spark off scattered 
convection along seabreeze and outflow boundaries. Convection will 
tend to develop initially offshore during the early morning hours 
and then begin to push inland as the seabreeze forms. Have went 
with chance probability of precipitation for the afternoon hours...and slight chance probability of precipitation 
in the morning and evening hours. Temperatures will be near 
seasonal norms in the lower 90s during the afternoon and the 
middle 70s at night. 


Long term... 


There will be little change in the pattern going into the latter 
half of the week. A broad upper level ridge will dominate the 
region aloft...and continued onshore flow will dominate in the low 
to mid-levels. As a result...scattered diurnally induced 
convection will be possible each day through Saturday with 
coverage decreasing during overnight and morning hours. Highs will 
remain close to seasonal norms in the lower 90s and overnight lows 
will cool into the lower to middle 70s each night. 


The ridge will finally begin to pull to the west and become more 
centered over the Southern Plains on Sunday. As this occurs...an 
upper level trough moving through the Great Lakes states will 
drive a weak back door front toward the forecast area. This front 
will struggle to reach the region...and should wash out somewhere 
over Mississippi and Alabama. Overall...convective coverage may be 
a bit higher on Sunday due to the proximity of the weak frontal 
boundary...but still only expect scattered coverage at best. The 
convection may also last longer into the evening hours as slightly 
enhanced lift allows the updrafts to linger past sunset. 


Aviation... 


Scattered to numerous thunderstorms will result in intermittent 
impacts across terminals today. Will leave thunderstorms in the vicinity in place this afternoon 
and could add tempos at times for lower visible during brief heavy 
rainfall events. VFR ceilings should return later this evening and most 
of the overnight period. IFR conditions could develop at mcb due to 
low ceilings for a few hours Tuesday morning and a few other airports 
may lower to MVFR. Higher rain chances expected again tomorrow. 


Meffer 


Marine... 


A tightening of the pressure gradient that brought winds into the 
exercise caution range over offshore waters is beginning to relax. 
Subsequently....southeast winds have begun to weaken and are now 
around 10 to 15 knots at the highest. Seas have fallen slightly as 
well with peaks near 4 feet for significant wave heights.As the 
inverted troughs move west of the marine area...southeast winds 
should ease back to around 10 knots or less on Tuesday...then east 
to southeast around 10 knots Wednesday through Friday. Seas should 
subside slowly back to 2 to 4 feet Tuesday morning and 1 to 3 feet 
Wednesday through Friday. 


Meffer 


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 75 93 73 93 / 20 40 20 40 
btr 76 93 74 94 / 20 40 20 40 
asd 77 92 76 93 / 20 40 20 40 
msy 78 91 77 91 / 20 40 20 40 
gpt 78 91 77 92 / 20 40 20 40 
pql 76 92 74 93 / 20 30 20 40 


&& 


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


$$ 
















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