Red Flag Warning 9, NWS Aberdeen, SD

Big Stone County, MN, Traverse County, MN, Brown County, SD, Buffalo County, SD, Campbell County, SD, Clark County, SD, Codington County, SD, Corson County, SD, Day County, SD, Deuel County, SD, Dewey County, SD, Edmunds County, SD, Faulk County, SD, Grant County, SD, Hamlin County, SD, Hand County, SD, Hughes County, SD, Hyde County, SD, Jones County, SD, Lyman County, SD, Marshall County, SD, McPherson County, SD, Potter County, SD, Roberts County, SD, Spink County, SD, Stanley County, SD, Sully County, SD, Walworth County, SD

980 
WWUS83 KABR 211939
RFWABR

URGENT - FIRE WEATHER MESSAGE
National Weather Service Aberdeen SD
239 PM CDT Tue Apr 21 2026

MNZ046-SDZ019>023-220345-
/O.EXT.KABR.FW.W.0009.260422T1700Z-260423T0100Z/
Big Stone-Clark-Codington-Grant-Hamlin-Deuel-
239 PM CDT Tue Apr 21 2026

...RED FLAG WARNING NOW IN EFFECT FROM NOON TO 8 PM CDT WEDNESDAY
FOR WIND AND LOW RELATIVE HUMIDITY FOR NORTHEAST SOUTH DAKOTA AND
WEST CENTRAL MINNESOTA...

* AFFECTED AREA...In Minnesota, Big Stone. In South Dakota, 
  Clark, Codington, Grant, Hamlin and Deuel.

* WINDS...South 20 to 25 mph with gusts up to 40 mph.

* RELATIVE HUMIDITY...As low as 23 percent.

* IMPACTS...Any fires that ignite will spread rapidly and become 
  difficult to control or suppress.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Red Flag Warning means that critical fire weather conditions
are either occurring now, or will shortly. A combination of
strong winds, low relative humidity, and warm temperatures can
contribute to extreme fire behavior.

&&

$$

SDZ015>018-033>037-045-048-051-220345-
/O.CON.KABR.FW.W.0009.260422T1600Z-260423T0100Z/
Dewey-Potter-Faulk-Spink-Stanley-Sully-Hughes-Hyde-Hand-Jones-
Lyman-Buffalo-
239 PM CDT Tue Apr 21 2026 /139 PM MDT Tue Apr 21 2026/

...RED FLAG WARNING REMAINS IN EFFECT FROM 11 AM CDT /10 AM MDT/
TO 8 PM CDT /7 PM MDT/ WEDNESDAY FOR WIND AND LOW RELATIVE
HUMIDITY FOR CENTRAL AND NORTH CENTRAL SOUTH DAKOTA...

* AFFECTED AREA...In South Dakota, Dewey, Potter, Faulk, Spink, 
  Stanley, Sully, Hughes, Hyde, Hand, Jones, Lyman and Buffalo.

* WINDS...South 20 to 30 mph with gusts up to 45 mph.

* RELATIVE HUMIDITY...As low as 14 percent.

* IMPACTS...Any fires that ignite will spread rapidly and become 
  difficult to control or suppress.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Red Flag Warning means that critical fire weather conditions
are either occurring now, or will shortly. A combination of
strong winds, low relative humidity, and warm temperatures can
contribute to extreme fire behavior.

&&

$$

SDZ003>006-009-010-220345-
/O.EXT.KABR.FW.A.0008.260422T1600Z-260423T0100Z/
Corson-Campbell-McPherson-Brown-Walworth-Edmunds-
239 PM CDT Tue Apr 21 2026 /139 PM MDT Tue Apr 21 2026/

...FIRE WEATHER WATCH NOW IN EFFECT FROM WEDNESDAY MORNING
THROUGH WEDNESDAY EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR
NORTH CENTRAL AND NORTHEAST SOUTH DAKOTA...

* AFFECTED AREA...In South Dakota, Corson, Campbell, McPherson, 
  Brown, Walworth and Edmunds.

* WINDS...South 15 to 25 mph with gusts up to 40 mph.

* RELATIVE HUMIDITY...As low as 17 percent.

* IMPACTS...Any fires that ignite will spread rapidly and become 
  difficult to control or suppress.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Fire Weather Watch means that critical fire weather conditions
are forecast to occur. Listen for later forecasts and possible
Red Flag Warnings.

&&

$$

MNZ039-SDZ007-008-011-220345-
/O.EXT.KABR.FW.A.0008.260422T1700Z-260423T0100Z/
Traverse-Marshall-Roberts-Day-
239 PM CDT Tue Apr 21 2026

...FIRE WEATHER WATCH NOW IN EFFECT FROM WEDNESDAY AFTERNOON
THROUGH WEDNESDAY EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR
NORTHEAST SOUTH DAKOTA AND WEST CENTRAL MINNESOTA...

* AFFECTED AREA...In Minnesota, Traverse. In South Dakota, 
  Marshall, Roberts and Day.

* WINDS...South 20 to 25 mph with gusts up to 35 mph.

* RELATIVE HUMIDITY...As low as 24 percent.

* IMPACTS...Any fires that ignite will spread rapidly and become 
  difficult to control or suppress.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Fire Weather Watch means that critical fire weather conditions
are forecast to occur. Listen for later forecasts and possible
Red Flag Warnings.

&&

$$

399 
WWUS83 KABR 220125
RFWABR

URGENT - FIRE WEATHER MESSAGE
National Weather Service Aberdeen SD
825 PM CDT Tue Apr 21 2026

SDZ015>018-033>037-045-048-051-221145-
/O.CON.KABR.FW.W.0009.260422T1600Z-260423T0100Z/
Dewey-Potter-Faulk-Spink-Stanley-Sully-Hughes-Hyde-Hand-Jones-
Lyman-Buffalo-
825 PM CDT Tue Apr 21 2026 /725 PM MDT Tue Apr 21 2026/

...RED FLAG WARNING REMAINS IN EFFECT FROM 11 AM CDT /10 AM MDT/
TO 8 PM CDT /7 PM MDT/ WEDNESDAY FOR WIND AND LOW RELATIVE
HUMIDITY FOR CENTRAL AND NORTH CENTRAL SOUTH DAKOTA...

* AFFECTED AREA...In South Dakota, Dewey, Potter, Faulk, Spink, 
  Stanley, Sully, Hughes, Hyde, Hand, Jones, Lyman and Buffalo.

* WINDS...South 20 to 30 mph with gusts up to 45 mph.

* RELATIVE HUMIDITY...As low as 14 percent.

* IMPACTS...Any fires that ignite will spread rapidly and become 
  difficult to control or suppress.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Red Flag Warning means that critical fire weather conditions
are either occurring now, or will shortly. A combination of
strong winds, low relative humidity, and warm temperatures can
contribute to extreme fire behavior.

&&

$$

MNZ046-SDZ019>023-221145-
/O.CON.KABR.FW.W.0009.260422T1700Z-260423T0100Z/
Big Stone-Clark-Codington-Grant-Hamlin-Deuel-
825 PM CDT Tue Apr 21 2026

...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TO 8 PM CDT
WEDNESDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR NORTHEAST SOUTH
DAKOTA AND WEST CENTRAL MINNESOTA...

* AFFECTED AREA...In Minnesota, Big Stone. In South Dakota, 
  Clark, Codington, Grant, Hamlin and Deuel.

* WINDS...South 20 to 25 mph with gusts up to 40 mph.

* RELATIVE HUMIDITY...As low as 23 percent.

* IMPACTS...Any fires that ignite will spread rapidly and become 
  difficult to control or suppress.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Red Flag Warning means that critical fire weather conditions
are either occurring now, or will shortly. A combination of
strong winds, low relative humidity, and warm temperatures can
contribute to extreme fire behavior.

&&

$$

SDZ003>006-009-010-221145-
/O.CON.KABR.FW.A.0008.260422T1600Z-260423T0100Z/
Corson-Campbell-McPherson-Brown-Walworth-Edmunds-
825 PM CDT Tue Apr 21 2026 /725 PM MDT Tue Apr 21 2026/

...FIRE WEATHER WATCH REMAINS IN EFFECT FROM WEDNESDAY MORNING
THROUGH WEDNESDAY EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR
NORTH CENTRAL AND NORTHEAST SOUTH DAKOTA...

* AFFECTED AREA...In South Dakota, Corson, Campbell, McPherson, 
  Brown, Walworth and Edmunds.

* WINDS...South 15 to 25 mph with gusts up to 40 mph.

* RELATIVE HUMIDITY...As low as 17 percent.

* IMPACTS...Any fires that ignite will spread rapidly and become 
  difficult to control or suppress.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Fire Weather Watch means that critical fire weather conditions
are forecast to occur. Listen for later forecasts and possible
Red Flag Warnings.

&&

$$

MNZ039-SDZ007-008-011-221145-
/O.CON.KABR.FW.A.0008.260422T1700Z-260423T0100Z/
Traverse-Marshall-Roberts-Day-
825 PM CDT Tue Apr 21 2026

...FIRE WEATHER WATCH REMAINS IN EFFECT FROM WEDNESDAY AFTERNOON
THROUGH WEDNESDAY EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR
NORTHEAST SOUTH DAKOTA AND WEST CENTRAL MINNESOTA...

* AFFECTED AREA...In Minnesota, Traverse. In South Dakota, 
  Marshall, Roberts and Day.

* WINDS...South 20 to 25 mph with gusts up to 35 mph.

* RELATIVE HUMIDITY...As low as 24 percent.

* IMPACTS...Any fires that ignite will spread rapidly and become 
  difficult to control or suppress.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Fire Weather Watch means that critical fire weather conditions
are forecast to occur. Listen for later forecasts and possible
Red Flag Warnings.

&&

$$

06

297 
WWUS83 KABR 220617
RFWABR

URGENT - FIRE WEATHER MESSAGE
National Weather Service Aberdeen SD
117 AM CDT Wed Apr 22 2026

SDZ003>006-009-010-221430-
/O.UPG.KABR.FW.A.0008.260422T1600Z-260423T0100Z/
/O.EXA.KABR.FW.W.0009.260422T1600Z-260423T0100Z/
Corson-Campbell-McPherson-Brown-Walworth-Edmunds-
117 AM CDT Wed Apr 22 2026 /1217 AM MDT Wed Apr 22 2026/

...RED FLAG WARNING IN EFFECT FROM 11 AM CDT /10 AM MDT/ THIS
MORNING TO 8 PM CDT /7 PM MDT/ THIS EVENING FOR WIND AND LOW
RELATIVE HUMIDITY FOR NORTH CENTRAL SOUTH DAKOTA...

The National Weather Service in Aberdeen has issued a Red Flag
Warning for wind and low relative humidity, which is in effect
from 11 AM CDT /10 AM MDT/ this morning to 8 PM CDT /7 PM MDT/
this evening. The Fire Weather Watch is no longer in effect.

* AFFECTED AREA...In South Dakota, Corson, Campbell, McPherson, 
  Brown, Walworth and Edmunds.

* WINDS...South 15 to 25 mph with gusts up to 40 mph.

* RELATIVE HUMIDITY...As low as 18 percent.

* IMPACTS...Any fires that ignite will spread rapidly and become 
  difficult to control or suppress.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Red Flag Warning means that critical fire weather conditions
are either occurring now, or will shortly. A combination of
strong winds, low relative humidity, and warm temperatures can
contribute to extreme fire behavior.

&&

$$

MNZ039-SDZ007-008-011-221430-
/O.UPG.KABR.FW.A.0008.260422T1700Z-260423T0100Z/
/O.EXA.KABR.FW.W.0009.260422T1700Z-260423T0100Z/
Traverse-Marshall-Roberts-Day-
117 AM CDT Wed Apr 22 2026

...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 8 PM CDT THIS
EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR NORTHEAST SOUTH 
DAKOTA AND WEST CENTRAL MINNESOTA...

The National Weather Service in Aberdeen has issued a Red Flag
Warning for wind and low relative humidity, which is in effect
from noon today to 8 PM CDT this evening. The Fire Weather Watch
is no longer in effect.

* AFFECTED AREA...In Minnesota, Traverse. In South Dakota, 
  Marshall, Roberts and Day.

* WINDS...South 20 to 25 mph with gusts up to 35 mph.

* RELATIVE HUMIDITY...As low as 25 percent.

* IMPACTS...Any fires that ignite will spread rapidly and become 
  difficult to control or suppress.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Red Flag Warning means that critical fire weather conditions
are either occurring now, or will shortly. A combination of
strong winds, low relative humidity, and warm temperatures can
contribute to extreme fire behavior.

&&

$$

SDZ015>018-033>037-045-048-051-221430-
/O.CON.KABR.FW.W.0009.260422T1600Z-260423T0100Z/
Dewey-Potter-Faulk-Spink-Stanley-Sully-Hughes-Hyde-Hand-Jones-
Lyman-Buffalo-
117 AM CDT Wed Apr 22 2026 /1217 AM MDT Wed Apr 22 2026/

...RED FLAG WARNING REMAINS IN EFFECT FROM 11 AM CDT /10 AM MDT/
THIS MORNING TO 8 PM CDT /7 PM MDT/ THIS EVENING FOR WIND AND LOW
RELATIVE HUMIDITY FOR CENTRAL AND NORTH CENTRAL SOUTH DAKOTA...

* AFFECTED AREA...In South Dakota, Dewey, Potter, Faulk, Spink, 
  Stanley, Sully, Hughes, Hyde, Hand, Jones, Lyman and Buffalo.

* WINDS...South 20 to 30 mph with gusts up to 45 mph.

* RELATIVE HUMIDITY...As low as 15 percent.

* IMPACTS...Any fires that ignite will spread rapidly and become 
  difficult to control or suppress.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Red Flag Warning means that critical fire weather conditions
are either occurring now, or will shortly. A combination of
strong winds, low relative humidity, and warm temperatures can
contribute to extreme fire behavior.

&&

$$

MNZ046-SDZ019>023-221430-
/O.CON.KABR.FW.W.0009.260422T1700Z-260423T0100Z/
Big Stone-Clark-Codington-Grant-Hamlin-Deuel-
117 AM CDT Wed Apr 22 2026

...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TODAY TO 8 PM CDT
THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR NORTHEAST
SOUTH DAKOTA AND WEST CENTRAL MINNESOTA...

* AFFECTED AREA...In Minnesota, Big Stone. In South Dakota, 
  Clark, Codington, Grant, Hamlin and Deuel.

* WINDS...South 20 to 25 mph with gusts up to 40 mph.

* RELATIVE HUMIDITY...As low as 22 percent.

* IMPACTS...Any fires that ignite will spread rapidly and become 
  difficult to control or suppress.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Red Flag Warning means that critical fire weather conditions
are either occurring now, or will shortly. A combination of
strong winds, low relative humidity, and warm temperatures can
contribute to extreme fire behavior.

&&

$$

355 
WWUS83 KABR 221331
RFWABR

URGENT - FIRE WEATHER MESSAGE
National Weather Service Aberdeen SD
831 AM CDT Wed Apr 22 2026

SDZ003>006-009-010-015>018-033>037-045-048-051-230100-
/O.CON.KABR.FW.W.0009.260422T1600Z-260423T0100Z/
Corson-Campbell-McPherson-Brown-Walworth-Edmunds-Dewey-Potter-
Faulk-Spink-Stanley-Sully-Hughes-Hyde-Hand-Jones-Lyman-Buffalo-
831 AM CDT Wed Apr 22 2026 /731 AM MDT Wed Apr 22 2026/

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM CDT /7 PM MDT/
THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR NORTH CENTRAL
SOUTH DAKOTA...

* AFFECTED AREA...In South Dakota, Corson, Campbell, McPherson, 
  Brown, Walworth, Edmunds, Dewey, Potter, Faulk, Spink, 
  Stanley, Sully, Hughes, Hyde, Hand, Jones, Lyman and Buffalo.

* WINDS...South 20 to 30 mph with gusts up to 45 mph.

* RELATIVE HUMIDITY...As low as 15 percent.

* IMPACTS...Any fires that ignite will spread rapidly and become 
  difficult to control or suppress.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Red Flag Warning means that critical fire weather conditions
are either occurring now, or will shortly. A combination of
strong winds, low relative humidity, and warm temperatures can
contribute to extreme fire behavior.

&&

$$

MNZ039-046-SDZ007-008-011-019>023-230100-
/O.CON.KABR.FW.W.0009.260422T1700Z-260423T0100Z/
Traverse-Big Stone-Marshall-Roberts-Day-Clark-Codington-Grant-
Hamlin-Deuel-
831 AM CDT Wed Apr 22 2026

...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TODAY TO 8 PM CDT
THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR NORTHEAST
SOUTH DAKOTA AND WEST CENTRAL MINNESOTA...

* AFFECTED AREA...In Minnesota, Traverse and Big Stone. In South 
  Dakota, Marshall, Roberts, Day, Clark, Codington, Grant, 
  Hamlin and Deuel.

* WINDS...South 20 to 25 mph with gusts up to 40 mph.

* RELATIVE HUMIDITY...As low as 23 percent.

* IMPACTS...Any fires that ignite will spread rapidly and become 
  difficult to control or suppress.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Red Flag Warning means that critical fire weather conditions
are either occurring now, or will shortly. A combination of
strong winds, low relative humidity, and warm temperatures can
contribute to extreme fire behavior.

&&

$$

Area Forecast Discussion
National Weather Service Aberdeen SD
1149 AM CDT Tue Apr 21 2026

.KEY MESSAGES...

- On Wednesday, winds out of the south will gust 35 to 45 mph
  and relative humidity will fall into the 15 to 30 percent
  range. The strong winds and warm/dry conditions will combine
  to create very high to extreme grassland fire danger index
  values. Fire Weather headlines are in place for this.

- There is a 35-75 percent chance of showers and thunderstorms
  Wednesday night into Thursday, mainly throughout central and
  north central South Dakota.

- Record or near record warm temperatures in the upper 80s to
  lower 90s are expected Wednesday.

- Strong sustained west winds 25 to 35 mph with gusts up to 45
  mph are expected on Thursday.

&&

.DISCUSSION...
Issued at 1147 AM CDT Tue Apr 21 2026

At 11 AM CDT, skies are sunny and temperatures are warming through
the 50s and 60s. Winds are light and variable becoming east or
southeast generally 5 to 15 mph.

Northwest flow aloft continues for another day and a half. Low level
jet southerly winds still forecast to develop tonight and persist
through Wednesday night in response to the strength of the low level
WAA progged to develop tonight through Wednesday evening. Right now
it does not appear as though Gulf moisture will make it this far
north by Wednesday. RH's and sustained winds/gusts, combined with
how warm it is forecast to get has yielded fire weather headlines
for Wednesday afternoon. Right now temperatures warming into the 80s
to low 90s with dewpoints up into the 30s and 40s are causing
afternoon minimum rh's to fall well below 20-25 percent over much of
the western half of the CWA. And, strong southerly winds 20 to 35
mph with gusts to 40-45 mph are forecast.

The closed upper low circulation now just off the west coast is
still progged to make its way over into the central/northern plains
region from late in the day Wednesday through Thursday. Still seeing
a decent mid-level vort-lobe working over the CWA by the middle of
Thursday. Out ahead of this vort-max, the combination of dynamic and
thermodynamic factors for forcing, lift, and moisture/instability
all supports the potential for a period of showers and thunderstorms
heading into Wednesday night mainly across portions of central/north
central South Dakota (35 to 75 percent chance of measurable
precipitation), spreading into portions of northeast South
Dakota/west central Minnesota by late Thursday morning. Beyond that,
the forecast pretty much dries out for a couple of days as the upper
circulation sets up to the north-northwest of the CWA. There is some
general consensus that another chance for precipitation should be
lining up for Sunday through Monday.

Still looks rather windy out of the west/northwest on Thursday
across north central South Dakota, but the latest iteration of model
progs is really backing off in terms of sustained/persistent strong
westerlies Friday into Saturday. Also, models appear to be trying to
retrograde the upper low slightly westward/northward over Canada
during the weekend, which may allow for the Sunday/Monday
precipitation potential to extend a bit further north toward this
CWA than previous model runs have been placing it. This, in turn, is
introducing some slight modifications (warming) to the temperature
forecast from Friday through Monday of next week.

&&

.AVIATION /18Z TAFS THROUGH 18Z WEDNESDAY/...
Issued at 1147 AM CDT Tue Apr 21 2026

Terminals KABR,KATY,KPIR,KMBG

Good VFR conditions are forecast through the TAF period, with
strong southerly winds 15 to 30 knots with gusts to 40 knots
developing later tonight and continuing through Wedneday. There
could be a few hours of low level wind shear potential overnight
at the KMBG terminal.

&&

.ABR WATCHES/WARNINGS/ADVISORIES...
SD...Fire Weather Watch from Wednesday afternoon through Wednesday
     evening for SDZ007-008-011.
     Red Flag Warning from 1 PM to 8 PM CDT Wednesday for
     SDZ019>023.
     Fire Weather Watch from Wednesday afternoon through Wednesday
     evening for SDZ003>006-009-010.
     Red Flag Warning from 11 AM CDT /10 AM MDT/ to 8 PM CDT /7 PM
     MDT/ Wednesday for SDZ015>018-033>037-045-048-051.
MN...Fire Weather Watch from Wednesday afternoon through Wednesday
     evening for MNZ039.
     Red Flag Warning from 1 PM to 8 PM CDT Wednesday for MNZ046.

&&

DISCUSSION...10
AVIATION...10

Hazardous Weather Outlook
National Weather Service Aberdeen SD
316 AM CDT Tue Apr 21 2026

MNZ039-046-SDZ003>011-015>023-033>037-045-048-051-220830-
Traverse-Big Stone-Corson-Campbell-McPherson-Brown-Marshall-Roberts-
Walworth-Edmunds-Day-Dewey-Potter-Faulk-Spink-Clark-Codington-Grant-
Hamlin-Deuel-Stanley-Sully-Hughes-Hyde-Hand-Jones-Lyman-Buffalo-
316 AM CDT Tue Apr 21 2026 /216 AM MDT Tue Apr 21 2026/

This Hazardous Weather Outlook is for west central Minnesota,
central South Dakota, north central South Dakota and northeast
South Dakota.

.DAY ONE...Today and tonight.

No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

On Wednesday, winds out of the south will gust 35 to 45 mph.
Relative humidity will fall into the 15 to 30 percent range. The
strong winds and dry weather will combine to create very high to
extreme grassland fire danger index values.

There is a marginal risk (level 1 of 5) for severe storms over
west of the Missouri River Wednesday evening and overnight. The
primary threat at this time is wind gusts of 60 mph from the storms.

West northwesterly winds will be gusting 35 to near 50 mph Thursday,
with the strongest winds over central South Dakota.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.