814
FNUS53 KLSX 210919
FWFLSX
FIRE WEATHER PLANNING FORECAST FOR EASTERN/CENTRAL MO AND SOUTHWEST IL
NATIONAL WEATHER SERVICE SAINT LOUIS MO
419 AM CDT SAT MAR 21 2026
VERY WARM TEMPERATURES AND SEASONABLY LOW MOISTURE WILL LEAD TO
MINIMUM RH OF 20 TO 35 PERCENT ACROSS THE AREA. SPORADIC ELEVATED
FIRE DANGER IS EXPECTED ACROSS NORTHEASTERN MO/WEST-CENTRAL IL
WHERE SOUTHWESTERLY WINDS WILL BE STRONGEST, AROUND 10 TO 12 MPH
AT TIMES. MIXING HEIGHTS WILL BE EXCEPTIONALLY DEEP THIS
AFTERNOON, PROMOTING OVERALL GOOD SMOKE DISPERSION, DESPITE SOME
LIMITATION FROM LIGHT WINDS. SIMILARLY WARM TEMPERATURES, MINIMUM
RH OF 25 TO 35 PERCENT, AND SOUTHWESTERLY WINDS WILL LIKELY LEAD
TO ELEVATED FIRE DANGER IN SOUTHEASTERN/EAST-CENTRAL MO SUNDAY
AFTERNOON AHEAD OF AN APPROACHING COLD FRONT. ALTHOUGH WINDS WILL
BE STRONGER ELSEWHERE AND BEHIND THE FRONT AFTER THE VEER TO
NORTHERLY, RH WILL GENERALLY BE HIGHER (35 TO 50 PERCENT) WITH
GREATER MOISTURE AND COOLING TEMPERATURES AFTER THE FRONT PASSES.
THERE IS ALSO A 20 TO 30 PERCENT CHANCE OF SHOWERS AND
THUNDERSTORMS SUNDAY EVENING IN SOUTHEASTERN MO/SOUTHWESTERN IL.
NEAR AVERAGE TEMPERATURES WILL WARM BACK TO WELL-ABOVE AVERAGE
MONDAY THROUGH THURSDAY, BUT MOISTURE WILL BE SLOWER TO INCREASE
WITH MINIMUM RH AROUND 30 TO 45 PERCENT MONDAY AND TUESDAY
AFTERNOONS.
MOZ072-073-083-084-099-212100-
CRAWFORD MO-WASHINGTON MO-DENT MO-IRON MO-REYNOLDS MO-
INCLUDING THE CITIES OF POTOSI/SALEM RANGER DISTRICT AND SALEM
419 AM CDT SAT MAR 21 2026
TODAY TONIGHT SUN
CLOUD COVER MCLEAR CLEAR MCLEAR
PRECIP TYPE NONE NONE NONE
CHANCE PRECIP (%) 0 0 0
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 92 (+5) 61 (+8) 91
RH % (24H TREND) 22 (+2) 79 (0) 28
WIND 20FT AM(MPH) LGT/VAR SW 4-8 G20
WIND 20FT PM(MPH) LGT/VAR LGT/VAR SW 7-11 G24
PRECIP AMOUNT 0.00 0.00 0.00
PRECIP DURATION
1700FT MIXING TEMP 80 81
MIXING HGT(FT-AGL) 7730 310 5890
TRANSPORT WND (M/S) W 3 S 5 W 9
TRANSPORT WND (MPH) W 6 S 10 W 20
VENT RATE (M/S-M) 9120 0 19290
GOOD POOR EXCELLENT
REMARKS...NONE.
FORECAST FOR DAYS 3 THROUGH 7
MONDAY
PARTLY CLOUDY. LOWS AROUND 40. HIGHS AROUND 60. MINIMUM
RH 30 PERCENT. NORTHEAST WINDS 10 TO 15 MPH.
TUESDAY
MOSTLY CLOUDY. LOWS IN THE LOWER 40S. HIGHS IN THE
LOWER 60S. SOUTHEAST WINDS 5 TO 10 MPH.
WEDNESDAY
MOSTLY CLOUDY. WARMER. LOWS IN THE MID 40S. HIGHS IN
THE MID 70S. MINIMUM RH 40 PERCENT. SOUTH WINDS 5 TO 10 MPH.
THURSDAY
MOSTLY CLEAR. LOWS IN THE MID 50S. HIGHS IN THE MID
80S. MINIMUM RH 37 PERCENT. SOUTHWEST WINDS 5 TO 10 MPH.
FRIDAY
PARTLY CLOUDY. A CHANCE OF SHOWERS. MUCH COOLER. LOWS
IN THE UPPER 40S. HIGHS IN THE LOWER 60S. NORTHEAST WINDS 10 TO
15 MPH.
MOZ074-075-085-212100-
SAINT FRANCOIS MO-SAINTE GENEVIEVE MO-MADISON MO-
INCLUDING THE CITIES OF FARMINGTON AND FREDERICKTOWN RANGER
DISTRICT
419 AM CDT SAT MAR 21 2026
TODAY TONIGHT SUN
CLOUD COVER MCLEAR MCLEAR MCLEAR
PRECIP TYPE NONE NONE NONE
CHANCE PRECIP (%) 0 0 0
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 91 (+3) 61 (+9) 89
RH % (24H TREND) 25 (+4) 79 (-5) 33
WIND 20FT AM(MPH) LGT/VAR SW 6-10 G20
WIND 20FT PM(MPH) LGT/VAR LGT/VAR SW 8-12 G21
PRECIP AMOUNT 0.00 0.00 0.00
PRECIP DURATION
1700FT MIXING TEMP 79 83
MIXING HGT(FT-AGL) 6090 330 5170
TRANSPORT WND (M/S) W 3 S 5 W 9
TRANSPORT WND (MPH) W 6 S 12 W 21
VENT RATE (M/S-M) 7880 80 18630
GOOD POOR EXCELLENT
REMARKS...NONE.
FORECAST FOR DAYS 3 THROUGH 7
MONDAY
PARTLY CLOUDY. LOWS AROUND 40. HIGHS IN THE UPPER 50S.
MINIMUM RH 35 PERCENT. NORTHEAST WINDS 10 TO 15 MPH.
TUESDAY
MOSTLY CLOUDY. LOWS IN THE LOWER 40S. HIGHS IN THE
LOWER 60S. SOUTHEAST WINDS 5 TO 10 MPH.
WEDNESDAY
MOSTLY CLOUDY. WARMER. LOWS IN THE MID 40S. HIGHS IN
THE MID 70S. SOUTH WINDS 5 TO 10 MPH.
THURSDAY
MOSTLY CLEAR. LOWS IN THE MID 50S. HIGHS IN THE LOWER
80S. SOUTHWEST WINDS 5 TO 10 MPH.
FRIDAY
MOSTLY CLOUDY. A CHANCE OF SHOWERS. MUCH COOLER. LOWS
IN THE UPPER 40S. HIGHS IN THE LOWER 60S. NORTHEAST WINDS 10 TO
15 MPH.
MOZ041-047>050-212100-
BOONE MO-MONITEAU MO-COLE MO-OSAGE MO-CALLAWAY MO-
INCLUDING THE CITIES OF COLUMBIA, CEDAR CREEK RANGER DISTRICT,
JEFFERSON CITY, AND FULTON
419 AM CDT SAT MAR 21 2026
TODAY TONIGHT SUN
CLOUD COVER MCLEAR CLEAR PCLDY
PRECIP TYPE NONE NONE NONE
CHANCE PRECIP (%) 0 0 0
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 92 (+3) 62 (+9) 85
RH % (24H TREND) 19 (0) 69 (-3) 34
WIND 20FT AM(MPH) LGT/VAR SW 6-10 G20
WIND 20FT PM(MPH) SW 3-7 LGT/VAR NW 11-15 G29
PRECIP AMOUNT 0.00 0.00 0.00
PRECIP DURATION
1700FT MIXING TEMP 80 76
MIXING HGT(FT-AGL) 6550 350 3370
TRANSPORT WND (M/S) SW 5 SW 5 NW 7
TRANSPORT WND (MPH) SW 12 SW 12 NW 15
VENT RATE (M/S-M) 14630 270 14150
GOOD POOR GOOD
REMARKS...NONE.
FORECAST FOR DAYS 3 THROUGH 7
MONDAY
PARTLY CLOUDY. LOWS IN THE UPPER 30S. HIGHS IN THE
UPPER 50S. MINIMUM RH 34 PERCENT. NORTHEAST WINDS 15 TO 20 MPH.
TUESDAY
MOSTLY CLOUDY. LOWS IN THE LOWER 40S. HIGHS IN THE MID
60S. SOUTHEAST WINDS 5 TO 10 MPH.
WEDNESDAY
MOSTLY CLOUDY. WARMER. LOWS IN THE MID 40S. HIGHS IN
THE MID 70S. SOUTH WINDS 5 TO 10 MPH.
THURSDAY
MOSTLY CLEAR. LOWS IN THE UPPER 50S. HIGHS IN THE
LOWER 80S. MINIMUM RH 37 PERCENT. WEST WINDS 10 TO 15 MPH.
FRIDAY
PARTLY CLOUDY. A CHANCE OF SHOWERS. MUCH COOLER. LOWS
IN THE MID 40S. HIGHS IN THE UPPER 50S. NORTHEAST WINDS 10 TO
15 MPH.
MOZ051-059-060-062-065-212100-
MONTGOMERY MO-GASCONADE MO-WARREN MO-FRANKLIN MO-JEFFERSON MO-
INCLUDING THE CITIES OF WASHINGTON, UNION, AND SULLIVAN
419 AM CDT SAT MAR 21 2026
TODAY TONIGHT SUN
CLOUD COVER MCLEAR CLEAR PCLDY
PRECIP TYPE NONE NONE NONE
CHANCE PRECIP (%) 0 0 0
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 93 (+4) 62 (+11) 89
RH % (24H TREND) 21 (+3) 69 (-9) 32
WIND 20FT AM(MPH) LGT/VAR SW 5-9 G21
WIND 20FT PM(MPH) LGT/VAR LGT/VAR NW 9-13 G28
PRECIP AMOUNT 0.00 0.00 0.00
PRECIP DURATION
1700FT MIXING TEMP 79 79
MIXING HGT(FT-AGL) 5520 310 4270
TRANSPORT WND (M/S) SW 4 S 5 N 9
TRANSPORT WND (MPH) SW 9 S 10 N 21
VENT RATE (M/S-M) 12100 100 18080
GOOD POOR EXCELLENT
REMARKS...NONE.
FORECAST FOR DAYS 3 THROUGH 7
MONDAY
PARTLY CLOUDY. LOWS IN THE UPPER 30S. HIGHS IN THE
UPPER 50S. MINIMUM RH 35 PERCENT. NORTHEAST WINDS 15 TO 20 MPH.
TUESDAY
MOSTLY CLOUDY. LOWS IN THE LOWER 40S. HIGHS IN THE
LOWER 60S. SOUTHEAST WINDS 5 TO 10 MPH.
WEDNESDAY
MOSTLY CLOUDY. WARMER. LOWS IN THE MID 40S. HIGHS IN
THE MID 70S. SOUTH WINDS 5 TO 10 MPH.
THURSDAY
MOSTLY CLEAR. LOWS IN THE MID 50S. HIGHS IN THE LOWER
80S. MINIMUM RH 40 PERCENT. SOUTHWEST WINDS 10 TO 15 MPH.
FRIDAY
PARTLY CLOUDY. A CHANCE OF SHOWERS. MUCH COOLER. LOWS
IN THE MID 40S. HIGHS IN THE UPPER 50S. NORTHEAST WINDS 10 TO
15 MPH.
MOZ061-063-064-212100-
SAINT CHARLES MO-SAINT LOUIS MO-SAINT LOUIS CITY MO-
INCLUDING THE CITIES OF SAINT CHARLES AND SAINT LOUIS
419 AM CDT SAT MAR 21 2026
TODAY TONIGHT SUN
CLOUD COVER MCLEAR MCLEAR PCLDY
PRECIP TYPE NONE NONE NONE
CHANCE PRECIP (%) 0 0 0
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 90 (+1) 63 (+12) 90
RH % (24H TREND) 23 (+3) 69 (-13) 32
WIND 20FT AM(MPH) LGT/VAR SW 5-9 G19
WIND 20FT PM(MPH) LGT/VAR LGT/VAR NW 9-13 G27
PRECIP AMOUNT 0.00 0.00 0.00
PRECIP DURATION
1700FT MIXING TEMP 77 80
MIXING HGT(FT-AGL) 4560 340 3950
TRANSPORT WND (M/S) SW 4 S 4 N 9
TRANSPORT WND (MPH) SW 8 S 8 N 21
VENT RATE (M/S-M) 7440 130 13710
FAIR POOR GOOD
REMARKS...NONE.
FORECAST FOR DAYS 3 THROUGH 7
MONDAY
PARTLY CLOUDY. LOWS IN THE UPPER 30S. HIGHS IN THE
UPPER 50S. MINIMUM RH 35 PERCENT. NORTHEAST WINDS 15 TO 20 MPH.
TUESDAY
MOSTLY CLOUDY. LOWS IN THE LOWER 40S. HIGHS IN THE
LOWER 60S. MINIMUM RH 39 PERCENT. SOUTHEAST WINDS 5 TO 10 MPH.
WEDNESDAY
MOSTLY CLOUDY. LOWS IN THE MID 40S. HIGHS IN THE
LOWER 70S. SOUTH WINDS 5 TO 10 MPH.
THURSDAY
PARTLY CLOUDY. LOWS IN THE MID 50S. HIGHS IN THE
LOWER 80S. MINIMUM RH 40 PERCENT. SOUTHWEST WINDS 10 TO 15 MPH.
FRIDAY
PARTLY CLOUDY. A CHANCE OF SHOWERS. MUCH COOLER. LOWS
IN THE MID 40S. HIGHS IN THE UPPER 50S. NORTHEAST WINDS 5 TO
10 MPH.
ILZ064-065-069-070-074-079-100>102-212100-
BOND IL-FAYETTE IL-CLINTON IL-MARION IL-WASHINGTON IL-RANDOLPH IL-
MADISON IL-SAINT CLAIR IL-MONROE IL-
INCLUDING THE CITIES OF VANDALIA, CENTRALIA, SALEM, CHESTER,
SPARTA, ALTON, EDWARDSVILLE, BELLEVILLE, AND CAHOKIA
419 AM CDT SAT MAR 21 2026
TODAY TONIGHT SUN
CLOUD COVER MCLEAR MCLEAR PCLDY
PRECIP TYPE NONE NONE NONE
CHANCE PRECIP (%) 0 0 0
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 87 (+1) 61 (+11) 87
RH % (24H TREND) 29 (+5) 85 (-4) 37
WIND 20FT AM(MPH) LGT/VAR SW 7-11 G19
WIND 20FT PM(MPH) LGT/VAR LGT/VAR W 10-14 G26
PRECIP AMOUNT 0.00 0.00 0.00
PRECIP DURATION
1700FT MIXING TEMP 75 81
MIXING HGT(FT-AGL) 3320 350 4220
TRANSPORT WND (M/S) SW 3 S 4 NW 8
TRANSPORT WND (MPH) SW 7 S 9 NW 18
VENT RATE (M/S-M) 5290 210 16170
MARGINAL POOR EXCELLENT
REMARKS...NONE.
FORECAST FOR DAYS 3 THROUGH 7
MONDAY
PARTLY CLOUDY. A CHANCE OF RAIN SHOWERS. LOWS IN THE
UPPER 30S. HIGHS IN THE MID 50S. MINIMUM RH 40 PERCENT. NORTHEAST
WINDS 15 TO 20 MPH.
TUESDAY
MOSTLY CLOUDY. LOWS IN THE UPPER 30S. HIGHS AROUND 60.
SOUTHEAST WINDS 5 TO 10 MPH.
WEDNESDAY
MOSTLY CLOUDY. LOWS IN THE LOWER 40S. HIGHS IN THE
UPPER 60S. SOUTH WINDS 5 TO 10 MPH.
THURSDAY
PARTLY CLOUDY. LOWS IN THE MID 50S. HIGHS IN THE
UPPER 70S. SOUTHWEST WINDS 10 TO 15 MPH.
FRIDAY
PARTLY CLOUDY. A CHANCE OF SHOWERS. MUCH COOLER. LOWS
IN THE MID 40S. HIGHS IN THE UPPER 50S. NORTHEAST WINDS 10 TO
15 MPH.
MOZ018-019-026-027-034>036-042-052-212100-
KNOX MO-LEWIS MO-SHELBY MO-MARION MO-MONROE MO-RALLS MO-PIKE MO-
AUDRAIN MO-LINCOLN MO-
INCLUDING THE CITIES OF HANNIBAL, BOWLING GREEN, AND MEXICO
419 AM CDT SAT MAR 21 2026
TODAY TONIGHT SUN
CLOUD COVER MCLEAR MCLEAR PCLDY
PRECIP TYPE NONE NONE NONE
CHANCE PRECIP (%) 0 0 0
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 90 (+5) 62 (+12) 80
RH % (24H TREND) 22 (-1) 67 (-12) 41
WIND 20FT AM(MPH) LGT/VAR W 7-11 G23
WIND 20FT PM(MPH) SW 5-9 G16 SW 3-7 G17 N 13-17 G30
PRECIP AMOUNT 0.00 0.00 0.00
PRECIP DURATION
1700FT MIXING TEMP 78 69
MIXING HGT(FT-AGL) 5280 380 3210
TRANSPORT WND (M/S) W 8 SW 5 N 13
TRANSPORT WND (MPH) W 17 SW 12 N 30
VENT RATE (M/S-M) 17010 210 15010
EXCELLENT POOR EXCELLENT
REMARKS...NONE.
FORECAST FOR DAYS 3 THROUGH 7
MONDAY
PARTLY CLOUDY. LOWS IN THE MID 30S. HIGHS IN THE MID
50S. MINIMUM RH 38 PERCENT. NORTHEAST WINDS 15 TO 20 MPH.
TUESDAY
MOSTLY CLOUDY. LOWS AROUND 40. HIGHS IN THE LOWER 60S.
SOUTH WINDS 5 TO 10 MPH.
WEDNESDAY
MOSTLY CLOUDY. LOWS IN THE LOWER 40S. HIGHS IN THE
LOWER 70S. SOUTH WINDS 5 TO 10 MPH.
THURSDAY
PARTLY CLOUDY. LOWS IN THE MID 50S. HIGHS IN THE
UPPER 70S. MINIMUM RH 40 PERCENT. WEST WINDS 10 TO 15 MPH.
FRIDAY
PARTLY CLOUDY. A CHANCE OF SHOWERS. MUCH COOLER. LOWS
AROUND 40. HIGHS IN THE LOWER 50S. NORTHEAST WINDS 10 TO 15 MPH.
ILZ095>098-212100-
ADAMS IL-BROWN IL-PIKE IL-CALHOUN IL-
INCLUDING THE CITIES OF QUINCY, MOUNT STERLING, AND PITTSFIELD
419 AM CDT SAT MAR 21 2026
TODAY TONIGHT SUN
CLOUD COVER MCLEAR MCLEAR PCLDY
PRECIP TYPE NONE NONE NONE
CHANCE PRECIP (%) 0 0 0
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 88 (+4) 62 (+12) 80
RH % (24H TREND) 24 (-1) 66 (-18) 40
WIND 20FT AM(MPH) LGT/VAR W 6-10 G21
WIND 20FT PM(MPH) SW 5-9 G15 S 3-7 G16 N 12-16 G28
PRECIP AMOUNT 0.00 0.00 0.00
PRECIP DURATION
1700FT MIXING TEMP 75 69
MIXING HGT(FT-AGL) 4640 360 3290
TRANSPORT WND (M/S) SW 7 S 6 N 13
TRANSPORT WND (MPH) SW 16 S 13 N 29
VENT RATE (M/S-M) 15660 220 14900
EXCELLENT POOR GOOD
REMARKS...NONE.
FORECAST FOR DAYS 3 THROUGH 7
MONDAY
PARTLY CLOUDY. LOWS IN THE MID 30S. HIGHS IN THE MID
50S. MINIMUM RH 37 PERCENT. NORTHEAST WINDS 15 TO 20 MPH.
TUESDAY
MOSTLY CLOUDY. LOWS AROUND 40. HIGHS IN THE LOWER 60S.
MINIMUM RH 39 PERCENT. SOUTH WINDS 5 TO 10 MPH.
WEDNESDAY
MOSTLY CLOUDY. LOWS IN THE LOWER 40S. HIGHS AROUND
70. SOUTH WINDS 5 TO 10 MPH.
THURSDAY
PARTLY CLOUDY. LOWS IN THE MID 50S. HIGHS IN THE
UPPER 70S. MINIMUM RH 40 PERCENT. WEST WINDS 10 TO 15 MPH.
FRIDAY
PARTLY CLOUDY. A CHANCE OF SHOWERS. MUCH COOLER. LOWS
AROUND 40. HIGHS IN THE MID 50S. NORTHEAST WINDS 10 TO 15 MPH.
ILZ058>060-099-212100-
GREENE IL-MACOUPIN IL-MONTGOMERY IL-JERSEY IL-
INCLUDING THE CITY OF LITCHFIELD
419 AM CDT SAT MAR 21 2026
TODAY TONIGHT SUN
CLOUD COVER MCLEAR MCLEAR PCLDY
PRECIP TYPE NONE NONE NONE
CHANCE PRECIP (%) 0 0 0
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 86 (+1) 59 (+10) 85
RH % (24H TREND) 23 (-2) 76 (-12) 33
WIND 20FT AM(MPH) LGT/VAR SW 7-11 G18
WIND 20FT PM(MPH) SW 4-8 S 3-7 G15 NW 12-16 G29
PRECIP AMOUNT 0.00 0.00 0.00
PRECIP DURATION
1700FT MIXING TEMP 74 76
MIXING HGT(FT-AGL) 3460 360 3490
TRANSPORT WND (M/S) SW 5 S 5 N 11
TRANSPORT WND (MPH) SW 10 S 12 N 25
VENT RATE (M/S-M) 8570 130 15070
GOOD POOR EXCELLENT
REMARKS...NONE.
FORECAST FOR DAYS 3 THROUGH 7
MONDAY
PARTLY CLOUDY. LOWS IN THE MID 30S. HIGHS IN THE MID
50S. MINIMUM RH 36 PERCENT. NORTHEAST WINDS 15 TO 20 MPH.
TUESDAY
MOSTLY CLOUDY. LOWS IN THE UPPER 30S. HIGHS IN THE
LOWER 60S. MINIMUM RH 36 PERCENT. SOUTHEAST WINDS 5 TO 10 MPH.
WEDNESDAY
MOSTLY CLOUDY. LOWS IN THE LOWER 40S. HIGHS IN THE
UPPER 60S. SOUTH WINDS 5 TO 10 MPH.
THURSDAY
PARTLY CLOUDY. LOWS IN THE LOWER 50S. HIGHS IN THE
UPPER 70S. SOUTHWEST WINDS 10 TO 15 MPH.
FRIDAY
PARTLY CLOUDY. A CHANCE OF SHOWERS. MUCH COOLER. LOWS
IN THE LOWER 40S. HIGHS IN THE MID 50S. NORTHEAST WINDS 10 TO
15 MPH.
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