Spot Forecast
Issued by NWS New Orleans/Baton Rouge, LA
Issued by NWS New Orleans/Baton Rouge, LA
233
FNUS74 KLIX 031826
FWSLIX
Spot Forecast for Roseland Event...Tangipahoa Parish Emergency Management
National Weather Service New Orleans LA
126 PM CDT Wed Sep 3 2025
If conditions become unrepresentative, contact the National Weather
Service.
We can be reached at (985) 649-0357 if you have questions or concerns
with this forecast.
.DISCUSSION...
There is a low chance (20 percent) of lightning impacting the incident site late
this afternoon into early this evening as a reinforcing front moves
in from the northwest. The most likely time for any lightning to
occur would be between 4 PM and 6 PM. Once the front moves through,
the chance of lightning will fall to zero for tonight and tomorrow
as a dry high pressure system moves in. Heavy rainfall will not be a
threat tonight or tomorrow. Winds will remain light and
variable through the period at 5 mph or less.
.REST OF TODAY...
Sky/weather.........Mostly sunny (30-40 percent). Slight chance of
showers and thunderstorms late in the
afternoon.
Chance of pcpn......20 percent.
Max temperature.....Around 90.
Min humidity........50 percent.
Max apparent temp...95.
Surface winds (mph).Light winds.
Mixing height (m)...1463-2012 meters AGL.
Transport winds.....Northwest around 5 mph.
Transport winds m/s.Northwest around 2 meters/second.
Ceiling (KFT).......25 decreasing to 8.5 late in the afternoon.
Wind (20 ft)........Light winds. Gusty and erratic winds expected
near thunderstorms late in the afternoon.
TIME (CDT) 1PM 2PM 3PM 4PM 5PM
Sky (%).........24 37 40 42 48
Weather cov..... SCH SCH
Weather type.... RW RW
Tstm cov........ SCH SCH
Chc of pcpn (%).10 10 10 20 20
Temp............89 90 89 88 87
RH..............52 50 52 54 55
Aparnt tmp (F)..94 95 94 92 91
20 FT wind dir..WNW WNW WNW WNW WNW
20 FT wind spd..2 2 2 2 2
20 FT wind gust.3 3 3 3 3
Surface wnd dir.WNW WNW WNW WNW WNW
Surface wnd spd.2 2 2 2 2
Surface wnd gst.3 3 3 3 3
Mix hgt (km)....2.0 2.0 2.0 1.5 1.5
Transp wind dir.NW NW NW WNW WNW
Transp wind spd.5 5 5 5 5
Trans wind dir..NW NW NW WNW WNW
Trans spd (m/s).2 2 2 2 2
Ceiling (kft)...25 25 25 8.5 9.5
.TONIGHT...
Sky/weather.........Mostly cloudy (45-55 percent) then becoming
partly cloudy (20-30 percent). Slight chance of
showers and thunderstorms early in the evening.
Chance of pcpn......20 percent.
Min temperature.....Around 69.
Max humidity........100 percent.
Max apparent temp...90.
Surface winds (mph).Light winds.
Mixing height (m)...122-1463 meters AGL.
Transport winds.....West around 5 mph shifting to the southwest 2
to 5 mph.
Transport winds m/s.Southwest 1 to 2 meters/second.
Ceiling (KFT).......11 increasing to 25 early in the evening.
Wind (20 ft)........Light winds. Gusty and erratic winds expected
near thunderstorms early in the evening.
TIME (CDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........51 51 42 35 33 26 21 12 14 14 16 21
Weather cov.....SCH
Weather type....RW
Tstm cov........SCH
Chc of pcpn (%).20 10 10 10 10 0 0 0 0 0 0 0
Temp............85 80 77 75 74 72 71 71 70 70 69 69
RH..............61 72 79 87 84 90 97 93 100 97 100 100
Aparnt tmp (F)..90 83 77 75 74 72 71 71 70 70 69 69
20 FT wind dir..WNW W N SE S S S S S SW SW SW
20 FT wind spd..2 2 2 2 2 1 1 1 1 1 1 1
20 FT wind gust.3 3 3 3 3 2 2 2 2 2 2 2
Surface wnd dir.WNW W N SE S S S S S SW SW SW
Surface wnd spd.2 2 2 2 2 1 1 1 1 1 1 1
Surface wnd gst.3 3 3 3 3 2 2 2 2 2 2 2
Mix hgt (km)....1.5 0.2 0.2 0.2 0.2 0.2 0.2 0.1 0.1 0.1 0.1 0.1
Transp wind dir.WNW SW SW SW S S S S S S WSW WSW
Transp wind spd.5 2 2 2 5 5 5 5 5 5 5 5
Trans wind dir..WNW SW SW SW S S S S S S WSW WSW
Trans spd (m/s).2 1 1 1 2 2 2 2 2 2 2 2
Ceiling (kft)...11 25 25 25 25 25 25 25 25 25 25 25
.THURSDAY...
Sky/weather.........Sunny (15-25 percent).
Chance of pcpn......0 percent.
Max temperature.....Around 91.
Min humidity........50 percent.
Max apparent temp...98.
Surface winds (mph).West winds around 5 mph.
Mixing height (m)...122-1676 meters AGL.
Transport winds.....West 5 to 8 mph.
Transport winds m/s.West 2 to 4 meters/second.
CEILING (KFT).......25.
Wind (20 ft)........Light winds.
TIME (CDT) 6 AM 9 AM NOON 3 PM
Sky (%).........15 13 23 16
Weather cov.....
Weather type....NONE NONE NONE NONE
Tstm cov........
Chc of pcpn (%).0 0 0 0
Temp............69 77 87 91
RH..............100 85 63 52
Aparnt tmp (F)..69 77 94 98
20 FT wind dir..WSW W W W
20 FT wind spd..1 2 5 5
20 FT wind gust.2 3 7 7
Surface wind....WSW 1G2 W 2G3 W 5G7 W 5G7
Mix hgt (m).....120 120 760 1680
Transp wind dir.WSW W W W
Transp wind spd.5 6 8 8
Trans wind dir..WSW W W W
Trans spd (m/s).2 3 4 4
Ceiling (kft)...25 25 25 25
$$
Forecaster...GRIGSBY
Requested by...Dawson Primes
Type of request...HAZMAT
.TAG 2520558.2/LIX
.DELDT 09/03/25
.FormatterVersion 2.0.0
.EMAIL loesel.matthew@epa.gov,sr-lix.forecasters@noaa.gov,dawson.primes@tangipahoa.org,vtravis@tangipahoa.org