855
FNUS73 KLSX 191239
FWSLSX

Spot Forecast for Mark Twain Lake...U.S. Army Corps of Engineers
National Weather Service Saint Louis MO
739 AM CDT Thu Sep 19 2024

Forecast is based on ignition time of 1100 CDT on September 19.
If conditions become unrepresentative, contact the
National Weather Service.

.DISCUSSION...
Hot and dry conditions can be expected for a majority of the day,
with some increasing cloud cover possible late in the afternoon.
Humidity is expected to be moderate to low, and there will be a
southerly breeze that will be mostly light. Deep mixing can be
expected as well, which will promote some afternoon wind gusts to
near 15 mph.

There is a slight chance for a stray shower or thunderstorm during
the evening and overnight hours, but this falls beyond the
prescribed burn time listed in this spot forecast. Chances for
wetting rain during the evening and overnight period are near 20
percent.

.REST OF TODAY...

Sky/weather.........Sunny (20-30 percent).
Chance of pcpn......0 percent.
LAL.................No Tstms.
Temperature.........83 at ignition...Max 91.
RH..................55 percent at ignition...Min 44 percent.
Wind (20 ft)........South winds 5 to 8 mph with gusts to 15 mph.
Eye level winds.....South winds 3 to 4 mph with gusts to 9 mph.
Haines Index........4 or low potential for large plume dominated
                    fire growth at ignition...max 5.
Mixing height.......3600 ft AGL at ignition...otherwise max 5700 ft
                    AGL.
Transport winds.....South 12 to 13 mph.
Smoke dispersal.....Fair /6210 m/s-m/ at ignition. Max...good /9880
                    m/s-m/.

TIME (CDT)      11 AM  1 PM   3 PM   5 PM   7 PM   9 PM
Sky (%).........13     24     26     34     21     18
Weather cov.....
Weather type....NONE   NONE   NONE   NONE   NONE   NONE
Tstm cov........
CWR.............0      0      0      0      0      10
LAL.............1      1      1      1      1      1
Temp............83     88     91     90     87     79
RH..............55     46     44     45     49     64
20 ft wind......S 6    S 7    S 7    S 7    S 5    S 5
20 ft wind gust.12     13     15     15     13     12
Eye level wind..S 3    S 3    S 3    S 3    S 2    S 2
Eye lvl wnd gst.6      6      6      6      6      6
Mix hgt (kft)...3.6    5.4    5.6    4.9    0.6    0.5
Transport wind..S 13   S 13   S 12   S 13   S 13   S 14
Haines index....4      5      5      5      4      4
Vrate kt-ft/1K..40     60     56     54     7      6
Ventrate Cat....POOR   FAIR   FAIR   FAIR   POOR   POOR

$$
Forecaster...19
Requested by...Aaron Eckelkamp
Type of request...PRESCRIBED
.TAG 2422712.0/LSX
.DELDT 09/19/24
.FormatterVersion 2.0.0