Thanatos Weather
Sunday, Aug 16, 2026 10:44:16

Products in the Last Seven Days
Type Phenomena Count
WarningSevere Thunderstorm1460
AdvisoryAreal Flood609
WarningFlash Flood471
AdvisoryHeat200
WatchSevere Thunderstorm118
WarningTornado110
WatchAreal Flood67
AdvisorySmall Craft51
WarningFire Weather40
AdvisoryDense Fog23
WatchFlash Flood12
AdvisoryDust Storm10
WatchFlood9
WatchFire Weather9
WarningDust Storm7
AdvisoryLake Wind4
WarningGale3
WatchGale2
AdvisoryBlowing Dust2
AdvisoryFlood2
Most Active Forecast Offices
Forecast Office Products
Indianapolis, IN137
Wilmington, OH134
Jackson, KY118
Chicago, IL113
Northern Indiana, IN112
Denver / Boulder, CO106
Phoenix, AZ104
Charleston, WV100
Las Vegas, NV98
Tucson, AZ92
Louisville, KY81
Davenport / Quad Cities, IA73
Morristown / Knoxville, TN71
Lincoln, IL71
Greenville-Spartanburg, SC68
Baltimore / Washington, VA64
Jacksonville, FL61
Cheyenne, WY57
Cleveland, OH56
North Platte, NE56
Product Count by Day
Date Warn Watch Advis.
2026-08-1622 223
2026-08-15171 18103
2026-08-14235 23138
2026-08-13263 36161
2026-08-12354 37124
2026-08-11521 45169
2026-08-10375 4198
2026-08-09179 2376
2026-08-082 37
Particularly Dangerous Situations
Product Forecast Office
Flash Flood Warning 0045Indianapolis, IN
Flash Flood Warning 0047Indianapolis, IN
Flash Flood Warning 0055Jackson, KY
Flash Flood Warning 0066Wilmington, OH
Flash Flood Warning 0067Wilmington, OH
Tornado Warning 0077Davenport / Quad Cities, IA
Flash Flood Warning 0123Charleston, WV
Home
Return to list
Severe Thunderstorm Watch 0573
Issued by the Sioux Falls Forecast Office

Action Issued Starts Expiration
New 2026-08-12 02:25:09 2026-08-12 02:24:00 2026-08-12 10:00:00
Area Extended 2026-08-12 04:12:04 2026-08-12 10:00:00
Continued 2026-08-12 04:12:04 2026-08-12 10:00:00
Continued 2026-08-12 06:06:38 2026-08-12 10:00:00
Cancelled 2026-08-12 06:06:38 2026-08-12 10:00:00
Cancelled 2026-08-12 08:18:12 2026-08-12 10:00:00


Action: New
Issued At: 2026-08-12 02:25:09

247 
WWUS63 KFSD 120724
WCNFSD

WATCH COUNTY NOTIFICATION FOR WATCH 573
NATIONAL WEATHER SERVICE SIOUX FALLS SD
224 AM CDT WED AUG 12 2026

NEC043-051-121500-
/O.NEW.KFSD.SV.A.0573.260812T0724Z-260812T1500Z/

THE NATIONAL WEATHER SERVICE HAS ISSUED SEVERE THUNDERSTORM WATCH
573 IN EFFECT UNTIL 10 AM CDT THIS MORNING FOR THE FOLLOWING
AREAS

IN NEBRASKA THIS WATCH INCLUDES 2 COUNTIES

IN NORTHEAST NEBRASKA

DAKOTA                DIXON                 

THIS INCLUDES THE CITIES OF ALLEN, PONCA, SOUTH SIOUX CITY, 
AND WAKEFIELD.

$$


Action: Area Extended
Issued At: 2026-08-12 04:12:04

600 
WWUS63 KFSD 120911
WCNFSD

WATCH COUNTY NOTIFICATION FOR WATCH 573
NATIONAL WEATHER SERVICE SIOUX FALLS SD
411 AM CDT WED AUG 12 2026

IAC021-035-093-149-193-SDC127-121500-
/O.EXA.KFSD.SV.A.0573.000000T0000Z-260812T1500Z/

THE NATIONAL WEATHER SERVICE HAS EXTENDED SEVERE THUNDERSTORM
WATCH 573 TO INCLUDE THE FOLLOWING AREAS UNTIL 10 AM CDT THIS
MORNING

IN IOWA THIS WATCH INCLUDES 5 COUNTIES

IN NORTHWEST IOWA

BUENA VISTA           CHEROKEE              PLYMOUTH             

IN WEST CENTRAL IOWA

IDA                   WOODBURY              

IN SOUTH DAKOTA THIS WATCH INCLUDES 1 COUNTY

IN SOUTHEAST SOUTH DAKOTA

UNION                 

THIS INCLUDES THE CITIES OF ALCESTER, BATTLE CREEK, BERESFORD, 
CHEROKEE, ELK POINT, HOLSTEIN, IDA GROVE, JEFFERSON, LE MARS, 
NORTH SIOUX CITY, SIOUX CITY, AND STORM LAKE.

$$

NEC043-051-121500-
/O.CON.KFSD.SV.A.0573.000000T0000Z-260812T1500Z/

SEVERE THUNDERSTORM WATCH 573 REMAINS VALID UNTIL 10 AM CDT THIS
MORNING FOR THE FOLLOWING AREAS

IN NEBRASKA THIS WATCH INCLUDES 2 COUNTIES

IN NORTHEAST NEBRASKA

DAKOTA                DIXON                 

THIS INCLUDES THE CITIES OF ALLEN, PONCA, SOUTH SIOUX CITY, 
AND WAKEFIELD.

$$


Action: Continued
Issued At: 2026-08-12 04:12:04

600 
WWUS63 KFSD 120911
WCNFSD

WATCH COUNTY NOTIFICATION FOR WATCH 573
NATIONAL WEATHER SERVICE SIOUX FALLS SD
411 AM CDT WED AUG 12 2026

IAC021-035-093-149-193-SDC127-121500-
/O.EXA.KFSD.SV.A.0573.000000T0000Z-260812T1500Z/

THE NATIONAL WEATHER SERVICE HAS EXTENDED SEVERE THUNDERSTORM
WATCH 573 TO INCLUDE THE FOLLOWING AREAS UNTIL 10 AM CDT THIS
MORNING

IN IOWA THIS WATCH INCLUDES 5 COUNTIES

IN NORTHWEST IOWA

BUENA VISTA           CHEROKEE              PLYMOUTH             

IN WEST CENTRAL IOWA

IDA                   WOODBURY              

IN SOUTH DAKOTA THIS WATCH INCLUDES 1 COUNTY

IN SOUTHEAST SOUTH DAKOTA

UNION                 

THIS INCLUDES THE CITIES OF ALCESTER, BATTLE CREEK, BERESFORD, 
CHEROKEE, ELK POINT, HOLSTEIN, IDA GROVE, JEFFERSON, LE MARS, 
NORTH SIOUX CITY, SIOUX CITY, AND STORM LAKE.

$$

NEC043-051-121500-
/O.CON.KFSD.SV.A.0573.000000T0000Z-260812T1500Z/

SEVERE THUNDERSTORM WATCH 573 REMAINS VALID UNTIL 10 AM CDT THIS
MORNING FOR THE FOLLOWING AREAS

IN NEBRASKA THIS WATCH INCLUDES 2 COUNTIES

IN NORTHEAST NEBRASKA

DAKOTA                DIXON                 

THIS INCLUDES THE CITIES OF ALLEN, PONCA, SOUTH SIOUX CITY, 
AND WAKEFIELD.

$$


Action: Continued
Issued At: 2026-08-12 06:06:38

673 
WWUS63 KFSD 121106
WCNFSD

WATCH COUNTY NOTIFICATION FOR WATCH 573
NATIONAL WEATHER SERVICE SIOUX FALLS SD
606 AM CDT WED AUG 12 2026

IAC149-NEC043-051-SDC127-121215-
/O.CAN.KFSD.SV.A.0573.000000T0000Z-260812T1500Z/

THE NATIONAL WEATHER SERVICE HAS CANCELLED SEVERE THUNDERSTORM
WATCH 573 FOR THE FOLLOWING AREAS

IN IOWA THIS CANCELS 1 COUNTY

IN NORTHWEST IOWA

PLYMOUTH              

IN NEBRASKA THIS CANCELS 2 COUNTIES

IN NORTHEAST NEBRASKA

DAKOTA                DIXON                 

IN SOUTH DAKOTA THIS CANCELS 1 COUNTY

IN SOUTHEAST SOUTH DAKOTA

UNION                 

THIS INCLUDES THE CITIES OF ALCESTER, ALLEN, BERESFORD, 
ELK POINT, JEFFERSON, LE MARS, NORTH SIOUX CITY, PONCA, 
SOUTH SIOUX CITY, AND WAKEFIELD.

$$

IAC021-035-093-193-121500-
/O.CON.KFSD.SV.A.0573.000000T0000Z-260812T1500Z/

SEVERE THUNDERSTORM WATCH 573 REMAINS VALID UNTIL 10 AM CDT THIS
MORNING FOR THE FOLLOWING AREAS

IN IOWA THIS WATCH INCLUDES 4 COUNTIES

IN NORTHWEST IOWA

BUENA VISTA           CHEROKEE              

IN WEST CENTRAL IOWA

IDA                   WOODBURY              

THIS INCLUDES THE CITIES OF BATTLE CREEK, CHEROKEE, HOLSTEIN, 
IDA GROVE, SIOUX CITY, AND STORM LAKE.

$$


Action: Cancelled
Issued At: 2026-08-12 06:06:38

673 
WWUS63 KFSD 121106
WCNFSD

WATCH COUNTY NOTIFICATION FOR WATCH 573
NATIONAL WEATHER SERVICE SIOUX FALLS SD
606 AM CDT WED AUG 12 2026

IAC149-NEC043-051-SDC127-121215-
/O.CAN.KFSD.SV.A.0573.000000T0000Z-260812T1500Z/

THE NATIONAL WEATHER SERVICE HAS CANCELLED SEVERE THUNDERSTORM
WATCH 573 FOR THE FOLLOWING AREAS

IN IOWA THIS CANCELS 1 COUNTY

IN NORTHWEST IOWA

PLYMOUTH              

IN NEBRASKA THIS CANCELS 2 COUNTIES

IN NORTHEAST NEBRASKA

DAKOTA                DIXON                 

IN SOUTH DAKOTA THIS CANCELS 1 COUNTY

IN SOUTHEAST SOUTH DAKOTA

UNION                 

THIS INCLUDES THE CITIES OF ALCESTER, ALLEN, BERESFORD, 
ELK POINT, JEFFERSON, LE MARS, NORTH SIOUX CITY, PONCA, 
SOUTH SIOUX CITY, AND WAKEFIELD.

$$

IAC021-035-093-193-121500-
/O.CON.KFSD.SV.A.0573.000000T0000Z-260812T1500Z/

SEVERE THUNDERSTORM WATCH 573 REMAINS VALID UNTIL 10 AM CDT THIS
MORNING FOR THE FOLLOWING AREAS

IN IOWA THIS WATCH INCLUDES 4 COUNTIES

IN NORTHWEST IOWA

BUENA VISTA           CHEROKEE              

IN WEST CENTRAL IOWA

IDA                   WOODBURY              

THIS INCLUDES THE CITIES OF BATTLE CREEK, CHEROKEE, HOLSTEIN, 
IDA GROVE, SIOUX CITY, AND STORM LAKE.

$$


Action: Cancelled
Issued At: 2026-08-12 08:18:12

089 
WWUS63 KFSD 121317
WCNFSD

WATCH COUNTY NOTIFICATION FOR WATCH 573
NATIONAL WEATHER SERVICE SIOUX FALLS SD
817 AM CDT WED AUG 12 2026

IAC021-035-093-193-121430-
/O.CAN.KFSD.SV.A.0573.000000T0000Z-260812T1500Z/

THE NATIONAL WEATHER SERVICE HAS CANCELLED SEVERE THUNDERSTORM
WATCH 573 FOR THE FOLLOWING AREAS

IN IOWA THIS CANCELS 4 COUNTIES

IN NORTHWEST IOWA

BUENA VISTA           CHEROKEE              

IN WEST CENTRAL IOWA

IDA                   WOODBURY              

THIS INCLUDES THE CITIES OF BATTLE CREEK, CHEROKEE, HOLSTEIN, 
IDA GROVE, SIOUX CITY, AND STORM LAKE.

$$



Page Loaded at: 2026-08-16 10:44:16 -- Client Address: 216.73.217.42 -- Refresh Time: seconds