Alert archive / Iowa / Winter Weather Advisories in 2021
Winter Weather Advisory 13, NWS Des Moines, IA
NWS Des Moines, IA issued this winter weather advisory at Mar 14, 2021, 4:02 AM CDT for 22 counties in Iowa. It took effect at Mar 15, 2021, 1:00 AM CDT. It was in force for 15 hr.
The area
The counties it named.
The facts
- Issued
- Mar 14, 2021, 4:02 AM CDT (09:02 UTC)
- In effect from
- Mar 15, 2021, 1:00 AM CDT
- Expired
- Mar 15, 2021, 4:00 PM CDT
- In force
- 15 hr
- Issued by
- NWS Des Moines, IA
All 22 counties
Audubon County, IA, Black Hawk County, IA, Boone County, IA, Bremer County, IA, Calhoun County, IA, Carroll County, IA, Crawford County, IA, Dallas County, IA, Franklin County, IA, Greene County, IA, Grundy County, IA, Guthrie County, IA, Hamilton County, IA, Hardin County, IA, Jasper County, IA, Marshall County, IA, Polk County, IA, Poweshiek County, IA, Sac County, IA, Story County, IA, Tama County, IA, Webster County, IA
The radar
The Des Moines radar (KDMX), 44 km from the middle of the area, began a volume at 09:02 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Omaha, NE (KOAX), launched 00:00Z, 9.0 hours before the alert went out and 238 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1526 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- 88 m²/s²
- 0-3 km storm-relative helicity
- 68 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
060 WWUS43 KDMX 140902 WSWDMX URGENT - WINTER WEATHER MESSAGE National Weather Service Des Moines IA 402 AM CDT Sun Mar 14 2021 ...Early Spring Storm to Bring Moderate to Heavy Snow to Northern Iowa Sunday Evening into Monday... .A strong early spring storm system will impact Iowa today into Monday. Rain expanding across the area today will transition to snow today night with snow continuing through midday Monday. A majority of the snow accumulation will be north of Interstate 80, but could be as far south as around Highway 92. Northern Iowa will see snow accumulations top 4 inches with areas along portions of the Iowa/Minnesota border around 8 inches. The heaviest snow will fall between midnight and noon Monday, likely impacting the Monday morning commute, with snow rates over an inch per hour in some places. IAZ004>007-015>017-023>027-141715- /O.UPG.KDMX.WS.A.0005.210315T0600Z-210315T2300Z/ /O.NEW.KDMX.WS.W.0005.210315T0600Z-210315T2100Z/ Emmet-Kossuth-Winnebago-Worth-Palo Alto-Hancock-Cerro Gordo- Pocahontas-Humboldt-Wright-Franklin-Butler- Including the cities of Estherville, Algona, Forest City, Lake Mills, Northwood, Manly, Emmetsburg, Garner, Britt, Kanawha, Mason City, Clear Lake, Pocahontas, Laurens, Rolfe, Fonda, Gilmore City, Humboldt, Eagle Grove, Clarion, Belmond, Hampton, Parkersburg, Clarksville, Shell Rock, Greene, Aplington, Allison, and Dumont 402 AM CDT Sun Mar 14 2021 ...WINTER STORM WARNING IN EFFECT FROM 1 AM TO 4 PM CDT MONDAY... * WHAT...Heavy wet snow expected. Total snow accumulations of 5 to 7 inches. Winds could gust as high as 35 mph. * WHERE...Portions of northern Iowa. * WHEN...From 1 AM to 4 PM CDT Monday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the morning or evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ IAZ028-034>039-047>050-141715- /O.UPG.KDMX.WS.A.0005.210315T0600Z-210315T2300Z/ /O.NEW.KDMX.WW.Y.0013.210315T0600Z-210315T2100Z/ Bremer-Calhoun-Webster-Hamilton-Hardin-Grundy-Black Hawk-Boone- Story-Marshall-Tama- Including the cities of Waverly, Rockwell City, Manson, Lake City, Pomeroy, Fort Dodge, Webster City, Iowa Falls, Eldora, Ackley, Grundy Center, Reinbeck, Conrad, Dike, Wellsburg, Waterloo, Cedar Falls, Boone, Ames, Marshalltown, Tama, Toledo, Traer, Dysart, and Gladbrook 402 AM CDT Sun Mar 14 2021 ...WINTER WEATHER ADVISORY IN EFFECT FROM 1 AM TO 4 PM CDT MONDAY... * WHAT...Wet snow expected. Total snow accumulations of 3 to 5 inches. Winds could gust as high as 35 mph. * WHERE...Portions of central Iowa. * WHEN...From 1 AM to 4 PM CDT Monday. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the morning or evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ IAZ033-044>046-057>062-141715- /O.NEW.KDMX.WW.Y.0013.210315T0600Z-210315T2100Z/ Sac-Crawford-Carroll-Greene-Audubon-Guthrie-Dallas-Polk-Jasper- Poweshiek- Including the cities of Sac City, Lake View, Odebolt, Wall Lake, Schaller, Early, Denison, Carroll, Jefferson, Audubon, Exira, Guthrie Center, Panora, Bayard, Casey, Perry, Waukee, Adel, Des Moines, Newton, and Grinnell 402 AM CDT Sun Mar 14 2021 ...WINTER WEATHER ADVISORY IN EFFECT FROM 1 AM TO 4 PM CDT MONDAY... * WHAT...Wet snow expected. Total snow accumulations of 2 to 4 inches. Winds could gust as high as 35 mph. * WHERE...Portions of central Iowa. * WHEN...From 1 AM to 4 PM CDT Monday. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the morning or evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ For more information from the National Weather Service visit https://weather.gov/desmoines Hagenhoff
7 follow-up statements
380 WWUS43 KDMX 141616 WSWDMX URGENT - WINTER WEATHER MESSAGE National Weather Service Des Moines IA 1116 AM CDT Sun Mar 14 2021 ...Early Spring Storm to Bring Moderate to Heavy Snow to Northern Iowa Late Tonight into Monday... .A strong early spring storm system will impact Iowa today into Monday. Rain expanding across the area today will transition to snow tonight with snow continuing through midday Monday. A majority of the snow accumulation will be north of Interstate 80, but some very minor accumulations could be as far south as around Highway 92. Northern Iowa will see snow accumulations top 4 inches with areas along portions of the Iowa/Minnesota border around 8 inches. The heaviest snow will fall between midnight and noon Monday, likely impacting the Monday morning commute, with snow rates over an inch per hour in some places. IAZ004>007-015>017-023>027-150030- /O.CON.KDMX.WS.W.0005.210315T0600Z-210315T2100Z/ Emmet-Kossuth-Winnebago-Worth-Palo Alto-Hancock-Cerro Gordo- Pocahontas-Humboldt-Wright-Franklin-Butler- Including the cities of Estherville, Algona, Forest City, Lake Mills, Northwood, Manly, Emmetsburg, Garner, Britt, Kanawha, Mason City, Clear Lake, Pocahontas, Laurens, Rolfe, Fonda, Gilmore City, Humboldt, Eagle Grove, Clarion, Belmond, Hampton, Parkersburg, Clarksville, Shell Rock, Greene, Aplington, Allison, and Dumont 1116 AM CDT Sun Mar 14 2021 ...WINTER STORM WARNING REMAINS IN EFFECT FROM 1 AM TO 4 PM CDT MONDAY... * WHAT...Heavy wet snow expected. Total snow accumulations of 5 to 7 inches. Winds gusting as high as 35 mph. * WHERE...Portions of northern Iowa. * WHEN...From 1 AM to 4 PM CDT Monday. * IMPACTS...Travel could be very difficult. The hazardous conditions will impact the Monday morning and perhaps the Monday evening commute. * ADDITIONAL DETAILS...Strong winds from the east may cause blowing snow, especially later tonight into Monday morning. Snow rates are expected to exceed 1 inch per hour at times. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ IAZ028-033>039-044>050-057>062-150030- /O.CON.KDMX.WW.Y.0013.210315T0600Z-210315T2100Z/ Bremer-Sac-Calhoun-Webster-Hamilton-Hardin-Grundy-Black Hawk- Crawford-Carroll-Greene-Boone-Story-Marshall-Tama-Audubon-Guthrie- Dallas-Polk-Jasper-Poweshiek- Including the cities of Waverly, Sac City, Lake View, Odebolt, Wall Lake, Schaller, Early, Rockwell City, Manson, Lake City, Pomeroy, Fort Dodge, Webster City, Iowa Falls, Eldora, Ackley, Grundy Center, Reinbeck, Conrad, Dike, Wellsburg, Waterloo, Cedar Falls, Denison, Carroll, Jefferson, Boone, Ames, Marshalltown, Tama, Toledo, Traer, Dysart, Gladbrook, Audubon, Exira, Guthrie Center, Panora, Bayard, Casey, Perry, Waukee, Adel, Des Moines, Newton, and Grinnell 1116 AM CDT Sun Mar 14 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 1 AM TO 4 PM CDT MONDAY... * WHAT...Wet snow expected. Total snow accumulations of 2 to 4 inches. Winds gusting as high as 35 mph. * WHERE...Portions of central Iowa. * WHEN...From 1 AM to 4 PM CDT Monday. * IMPACTS...Plan on slippery road conditions. The hazardous conditions will impact the Monday morning and perhaps the Monday evening commute. * ADDITIONAL DETAILS...Strong winds from the east may cause blowing snow, especially later tonight into Monday morning. Snow rates are expected to exceed 1 inch per hour at times over northern Iowa. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ For more information from the National Weather Service visit https://weather.gov/desmoines Ansorge
742 WWUS43 KDMX 141956 WSWDMX URGENT - WINTER WEATHER MESSAGE National Weather Service Des Moines IA 256 PM CDT Sun Mar 14 2021 ...Quick Hitting Spring Storm to Bring Moderate to Heavy Snow to Northern Iowa Late Tonight into Monday... .A strong early spring storm system will impact Iowa into Monday. A majority of the snow accumulation will be north of Interstate 80, but some very minor accumulations could be as far south as around Highway 92. Northern Iowa will see snow accumulations top 6 inches with areas along portions of the Iowa/Minnesota border around 8 to 9 inches. The heaviest snow will fall between midnight and noon Monday. This will adversely impact the Monday morning commute with snow rates over an inch per hour over much of the warned area late tonight and Monday morning. IAZ028-033>039-150400- /O.UPG.KDMX.WW.Y.0013.210315T0600Z-210315T2100Z/ /O.EXA.KDMX.WS.W.0005.210315T0600Z-210315T2100Z/ Bremer-Sac-Calhoun-Webster-Hamilton-Hardin-Grundy-Black Hawk- Including the cities of Waverly, Sac City, Lake View, Odebolt, Wall Lake, Schaller, Early, Rockwell City, Manson, Lake City, Pomeroy, Fort Dodge, Webster City, Iowa Falls, Eldora, Ackley, Grundy Center, Reinbeck, Conrad, Dike, Wellsburg, Waterloo, and Cedar Falls 256 PM CDT Sun Mar 14 2021 ...WINTER STORM WARNING IN EFFECT FROM 1 AM TO 4 PM CDT MONDAY... * WHAT...Heavy, wet snow expected. Total snow accumulations of 5 to 8 inches with the highest totals near the Iowa Minnesota border. Winds gusting as high as 35 to 40 mph at times late tonight and early Monday morning. * WHERE...Northern and Northeast Iowa. * WHEN...From 1 AM to 4 PM CDT Monday. * IMPACTS...Travel could be very difficult. The hazardous weather will impact the Monday morning and perhaps the Monday evening commute. * ADDITIONAL DETAILS...Strong winds from the east will cause blowing snow, especially later tonight into Monday morning. Snow rates are expected to exceed 1.5 inches per hour at times over northern Iowa. Visibility may lower to 1/2 mile or less at times. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ IAZ004>007-015>017-023>027-150400- /O.CON.KDMX.WS.W.0005.210315T0600Z-210315T2100Z/ Emmet-Kossuth-Winnebago-Worth-Palo Alto-Hancock-Cerro Gordo- Pocahontas-Humboldt-Wright-Franklin-Butler- Including the cities of Estherville, Algona, Forest City, Lake Mills, Northwood, Manly, Emmetsburg, Garner, Britt, Kanawha, Mason City, Clear Lake, Pocahontas, Laurens, Rolfe, Fonda, Gilmore City, Humboldt, Eagle Grove, Clarion, Belmond, Hampton, Parkersburg, Clarksville, Shell Rock, Greene, Aplington, Allison, and Dumont 256 PM CDT Sun Mar 14 2021 ...WINTER STORM WARNING REMAINS IN EFFECT FROM 1 AM TO 4 PM CDT MONDAY... * WHAT...Heavy wet snow expected. Total snow accumulations of 5 to 8 inches. Winds gusting as high as 35 mph. * WHERE...Portions of northern Iowa. * WHEN...From 1 AM to 4 PM CDT Monday. * IMPACTS...Travel could be very difficult. The hazardous conditions will impact the Monday morning and perhaps the Monday evening commute. * ADDITIONAL DETAILS...Strong winds from the east may cause blowing snow, especially later tonight into Monday morning. Snow rates are expected to exceed 1.5 inches per hour at times. Visibility may lower to 1/2 mile or less at times. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ IAZ044>050-057>062-150400- /O.CON.KDMX.WW.Y.0013.210315T0600Z-210315T2100Z/ Crawford-Carroll-Greene-Boone-Story-Marshall-Tama-Audubon-Guthrie- Dallas-Polk-Jasper-Poweshiek- Including the cities of Denison, Carroll, Jefferson, Boone, Ames, Marshalltown, Tama, Toledo, Traer, Dysart, Gladbrook, Audubon, Exira, Guthrie Center, Panora, Bayard, Casey, Perry, Waukee, Adel, Des Moines, Newton, and Grinnell 256 PM CDT Sun Mar 14 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 1 AM TO 4 PM CDT MONDAY... * WHAT...Wet snow expected. Total snow accumulations of 2 to 4 inches. Winds gusting as high as 35 mph. * WHERE...Portions of central Iowa. * WHEN...From 1 AM to 4 PM CDT Monday. * IMPACTS...Plan on slippery road conditions. The hazardous conditions will impact the Monday morning and perhaps the Monday evening commute. * ADDITIONAL DETAILS...Strong winds from the east may cause blowing snow, especially later tonight into Monday morning. Snow rates are expected to exceed 1 inch per hour at times over northern Iowa. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ For more information from the National Weather Service visit https://weather.gov/desmoines
893 WWUS43 KDMX 150158 WSWDMX URGENT - WINTER WEATHER MESSAGE National Weather Service Des Moines IA 858 PM CDT Sun Mar 14 2021 ...Quick Hitting Spring Storm to Bring Moderate to Heavy Snow to Northern Iowa Late Tonight into Monday... .A strong early spring storm system will impact Iowa into Monday. A majority of the snow accumulation will be north of Interstate 80, but some very minor accumulations could be as far south as around Highway 92. Northern Iowa will see snow accumulations top 6 inches with areas along portions of the Iowa/Minnesota border around 8 to 9 inches. The heaviest snow will fall between midnight and noon Monday. This will adversely impact the Monday morning commute with snow rates over an inch per hour over much of the warned area late tonight and Monday morning. IAZ004>007-015>017-023>028-033>039-151000- /O.CON.KDMX.WS.W.0005.210315T0600Z-210315T2100Z/ Emmet-Kossuth-Winnebago-Worth-Palo Alto-Hancock-Cerro Gordo- Pocahontas-Humboldt-Wright-Franklin-Butler-Bremer-Sac-Calhoun- Webster-Hamilton-Hardin-Grundy-Black Hawk- Including the cities of Estherville, Algona, Forest City, Lake Mills, Northwood, Manly, Emmetsburg, Garner, Britt, Kanawha, Mason City, Clear Lake, Pocahontas, Laurens, Rolfe, Fonda, Gilmore City, Humboldt, Eagle Grove, Clarion, Belmond, Hampton, Parkersburg, Clarksville, Shell Rock, Greene, Aplington, Allison, Dumont, Waverly, Sac City, Lake View, Odebolt, Wall Lake, Schaller, Early, Rockwell City, Manson, Lake City, Pomeroy, Fort Dodge, Webster City, Iowa Falls, Eldora, Ackley, Grundy Center, Reinbeck, Conrad, Dike, Wellsburg, Waterloo, and Cedar Falls 858 PM CDT Sun Mar 14 2021 ...WINTER STORM WARNING REMAINS IN EFFECT FROM 1 AM TO 4 PM CDT MONDAY... * WHAT...Heavy wet snow expected. Total snow accumulations of 5 to 8 inches. Winds gusting as high as 35 mph. * WHERE...Portions of northern Iowa. * WHEN...From 1 AM to 4 PM CDT Monday. * IMPACTS...Travel could be very difficult. The hazardous conditions will impact the Monday morning and perhaps the Monday evening commute. * ADDITIONAL DETAILS...Strong winds from the east may cause blowing snow, especially later tonight into Monday morning. Snow rates are expected to exceed 1.5 inches per hour at times. Visibility may lower to 1/2 mile or less at times. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ IAZ044>050-057>062-151000- /O.CON.KDMX.WW.Y.0013.210315T0600Z-210315T2100Z/ Crawford-Carroll-Greene-Boone-Story-Marshall-Tama-Audubon-Guthrie- Dallas-Polk-Jasper-Poweshiek- Including the cities of Denison, Carroll, Jefferson, Boone, Ames, Marshalltown, Tama, Toledo, Traer, Dysart, Gladbrook, Audubon, Exira, Guthrie Center, Panora, Bayard, Casey, Perry, Waukee, Adel, Des Moines, Newton, and Grinnell 858 PM CDT Sun Mar 14 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 1 AM TO 4 PM CDT MONDAY... * WHAT...Wet snow expected. Total snow accumulations of 2 to 4 inches. Winds gusting as high as 35 mph. * WHERE...Portions of central Iowa. * WHEN...From 1 AM to 4 PM CDT Monday. * IMPACTS...Plan on slippery road conditions. The hazardous conditions will impact the Monday morning and perhaps the Monday evening commute. * ADDITIONAL DETAILS...Strong winds from the east may cause blowing snow, especially later tonight into Monday morning. Snow rates are expected to exceed 1 inch per hour at times over northern Iowa. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ For more information from the National Weather Service visit https://weather.gov/desmoines
389 WWUS43 KDMX 150834 WSWDMX URGENT - WINTER WEATHER MESSAGE National Weather Service Des Moines IA 334 AM CDT Mon Mar 15 2021 ...Quick Hitting Spring Storm to Bring Moderate to Heavy Snow to Northern Iowa Late Tonight into Monday... .A strong early spring storm system continues to move across Iowa this morning. A majority of the snow accumulation will be north of Interstate 80, but some minor accumulation has occurred towards the highway 94 corridor already this morning. Northern Iowa will see snow accumulations exceed 6 inches with areas. The heaviest snow will fall before noon today, impacting the morning commute with snow rates over an inch per hour over much of the warned area. IAZ004>007-015>017-023>028-033>039-151645- /O.CON.KDMX.WS.W.0005.000000T0000Z-210315T2100Z/ Emmet-Kossuth-Winnebago-Worth-Palo Alto-Hancock-Cerro Gordo- Pocahontas-Humboldt-Wright-Franklin-Butler-Bremer-Sac-Calhoun- Webster-Hamilton-Hardin-Grundy-Black Hawk- Including the cities of Estherville, Algona, Forest City, Lake Mills, Northwood, Manly, Emmetsburg, Garner, Britt, Kanawha, Mason City, Clear Lake, Pocahontas, Laurens, Rolfe, Fonda, Gilmore City, Humboldt, Eagle Grove, Clarion, Belmond, Hampton, Parkersburg, Clarksville, Shell Rock, Greene, Aplington, Allison, Dumont, Waverly, Sac City, Lake View, Odebolt, Wall Lake, Schaller, Early, Rockwell City, Manson, Lake City, Pomeroy, Fort Dodge, Webster City, Iowa Falls, Eldora, Ackley, Grundy Center, Reinbeck, Conrad, Dike, Wellsburg, Waterloo, and Cedar Falls 334 AM CDT Mon Mar 15 2021 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 4 PM CDT THIS AFTERNOON... * WHAT...Heavy wet snow expected. Total snow accumulations of 5 to 8 inches. Winds gusting as high as 35 mph. * WHERE...Portions of northern Iowa. * WHEN...Until 4 PM CDT this afternoon. * IMPACTS...Travel could be very difficult. The hazardous conditions will impact the Monday morning and perhaps the Monday evening commute. * ADDITIONAL DETAILS...Strong winds from the east may cause blowing snow this morning. Snow rates are expected to exceed 1.5 inches per hour at times. Visibility may lower to 1/2 mile or less at times. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ IAZ044-045-057-058-151500- /O.EXT.KDMX.WW.Y.0013.000000T0000Z-210315T1500Z/ Crawford-Carroll-Audubon-Guthrie- Including the cities of Denison, Carroll, Audubon, Exira, Guthrie Center, Panora, Bayard, and Casey 334 AM CDT Mon Mar 15 2021 ...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL 10 AM CDT THIS MORNING... * WHAT...Wet snow expected. Total snow accumulations of 2 to 4 inches. Winds gusting as high as 35 mph. * WHERE...Portions of central Iowa. * WHEN...Until 10 AM CDT this morning. * IMPACTS...Plan on slippery road conditions. The hazardous conditions will impact the Monday morning commute. * ADDITIONAL DETAILS...Strong winds from the east may cause blowing snow. Snow rates are expected to exceed 1 inch per hour at times over northern Iowa. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ IAZ046>048-059>061-151645- /O.EXT.KDMX.WW.Y.0013.000000T0000Z-210315T1800Z/ Greene-Boone-Story-Dallas-Polk-Jasper- Including the cities of Jefferson, Boone, Ames, Perry, Waukee, Adel, Des Moines, and Newton 334 AM CDT Mon Mar 15 2021 ...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL 1 PM CDT THIS AFTERNOON... * WHAT...Wet snow expected. Total snow accumulations of 2 to 4 inches. Winds gusting as high as 35 mph. * WHERE...Portions of central Iowa. * WHEN...Until 1 PM CDT this afternoon. * IMPACTS...Plan on slippery road conditions. The hazardous conditions will impact the Monday morning commute. * ADDITIONAL DETAILS...Snow rates are expected to exceed 1 inch per hour at times over northern Iowa. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ IAZ049-050-062-151645- /O.CON.KDMX.WW.Y.0013.000000T0000Z-210315T2100Z/ Marshall-Tama-Poweshiek- Including the cities of Marshalltown, Tama, Toledo, Traer, Dysart, Gladbrook, and Grinnell 334 AM CDT Mon Mar 15 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 4 PM CDT THIS AFTERNOON... * WHAT...Wet snow expected. Total snow accumulations of 2 to 4 inches. Winds gusting as high as 35 mph. * WHERE...Portions of central Iowa. * WHEN...Until 4 PM CDT this afternoon. * IMPACTS...Plan on slippery road conditions. The hazardous conditions will impact the Monday morning and perhaps the Monday evening commute. * ADDITIONAL DETAILS...Strong winds from the east may cause blowing snow. Snow rates are expected to exceed 1 inch per hour at times. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ For more information from the National Weather Service visit https://weather.gov/desmoines Hagenhoff
554 WWUS43 KDMX 151032 WSWDMX URGENT - WINTER WEATHER MESSAGE National Weather Service Des Moines IA 532 AM CDT Mon Mar 15 2021 ...Quick Hitting Spring Storm to Bring Moderate to Heavy Snow to Northern Iowa Late Tonight into Monday... .A strong early spring storm system continues to move across Iowa this morning. A majority of the snow accumulation will be north of Interstate 80, but some minor accumulation has occurred towards the highway 94 corridor already this morning. Northern Iowa will see snow accumulations exceed 6 inches with areas. The heaviest snow will fall before noon today, impacting the morning commute with snow rates over an inch per hour over much of the warned area. IAZ023-033-034-151145- /O.CAN.KDMX.WS.W.0005.000000T0000Z-210315T2100Z/ Pocahontas-Sac-Calhoun- Including the cities of Pocahontas, Laurens, Rolfe, Fonda, Gilmore City, Sac City, Lake View, Odebolt, Wall Lake, Schaller, Early, Rockwell City, Manson, Lake City, and Pomeroy 532 AM CDT Mon Mar 15 2021 ...WINTER STORM WARNING IS CANCELLED... Snow has come to an end across the area, thus the Winter Storm Warning has been cancelled. Slicks spots this morning may cause continued issues on area roads through the morning commute. $$ IAZ046-047-059-060-151145- /O.CAN.KDMX.WW.Y.0013.000000T0000Z-210315T1800Z/ Greene-Boone-Dallas-Polk- Including the cities of Jefferson, Boone, Perry, Waukee, Adel, and Des Moines 532 AM CDT Mon Mar 15 2021 ...WINTER WEATHER ADVISORY IS CANCELLED... Snow has come to an end across the area, thus the Winter Weather Advisory has been cancelled. Slicks spots this morning may cause continued issues on area roads through the morning commute. $$ IAZ044-045-057-058-151145- /O.CAN.KDMX.WW.Y.0013.000000T0000Z-210315T1500Z/ Crawford-Carroll-Audubon-Guthrie- Including the cities of Denison, Carroll, Audubon, Exira, Guthrie Center, Panora, Bayard, and Casey 532 AM CDT Mon Mar 15 2021 ...WINTER WEATHER ADVISORY IS CANCELLED... Snow has come to an end across the area, thus the Winter Weather Advisory has been cancelled. Slicks spots this morning may cause continued issues on area roads through the morning commute. $$ IAZ004>007-015>017-024>028-035>039-151845- /O.CON.KDMX.WS.W.0005.000000T0000Z-210315T2100Z/ Emmet-Kossuth-Winnebago-Worth-Palo Alto-Hancock-Cerro Gordo- Humboldt-Wright-Franklin-Butler-Bremer-Webster-Hamilton-Hardin- Grundy-Black Hawk- Including the cities of Estherville, Algona, Forest City, Lake Mills, Northwood, Manly, Emmetsburg, Garner, Britt, Kanawha, Mason City, Clear Lake, Humboldt, Eagle Grove, Clarion, Belmond, Hampton, Parkersburg, Clarksville, Shell Rock, Greene, Aplington, Allison, Dumont, Waverly, Fort Dodge, Webster City, Iowa Falls, Eldora, Ackley, Grundy Center, Reinbeck, Conrad, Dike, Wellsburg, Waterloo, and Cedar Falls 532 AM CDT Mon Mar 15 2021 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 4 PM CDT THIS AFTERNOON... * WHAT...Heavy wet snow expected. Total snow accumulations of 5 to 8 inches. Winds gusting as high as 35 mph. * WHERE...Portions of northern Iowa. * WHEN...Until 4 PM CDT this afternoon. * IMPACTS...Travel could be very difficult. The hazardous conditions will impact the Monday morning and perhaps the Monday evening commute. * ADDITIONAL DETAILS...Strong winds from the east may cause blowing snow this morning. Snow rates are expected to exceed 1.5 inches per hour at times. Visibility may lower to 1/2 mile or less at times. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ IAZ049-050-062-151845- /O.CON.KDMX.WW.Y.0013.000000T0000Z-210315T2100Z/ Marshall-Tama-Poweshiek- Including the cities of Marshalltown, Tama, Toledo, Traer, Dysart, Gladbrook, and Grinnell 532 AM CDT Mon Mar 15 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 4 PM CDT THIS AFTERNOON... * WHAT...Wet snow expected. Total snow accumulations of 2 to 4 inches. Winds gusting as high as 35 mph. * WHERE...Portions of central Iowa. * WHEN...Until 4 PM CDT this afternoon. * IMPACTS...Plan on slippery road conditions. The hazardous conditions will impact the Monday morning and perhaps the Monday evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ IAZ048-061-151800- /O.CON.KDMX.WW.Y.0013.000000T0000Z-210315T1800Z/ Story-Jasper- Including the cities of Ames and Newton 532 AM CDT Mon Mar 15 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 1 PM CDT THIS AFTERNOON... * WHAT...Wet snow expected. Total snow accumulations of 2 to 4 inches. Winds gusting as high as 35 mph. * WHERE...Portions of central Iowa. * WHEN...Until 1 PM CDT this afternoon. * IMPACTS...Plan on slippery road conditions. The hazardous conditions will impact the Monday morning commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ For more information from the National Weather Service visit https://weather.gov/desmoines Hagenhoff
356 WWUS43 KDMX 151645 WSWDMX URGENT - WINTER WEATHER MESSAGE National Weather Service Des Moines IA 1145 AM CDT Mon Mar 15 2021 ...Wind Blown Snow Lingers over Northeast Iowa... .A strong early spring storm system continues to bring impactful winter weather through the Upper Mississippi Valley at midday. A majority of the additional snow accumulation will be between Mason City and Waterloo, but periods of freezing drizzle and lingering blowing snow are possible just to the west and south. IAZ026-038-152100- /O.CAN.KDMX.WS.W.0005.000000T0000Z-210315T2100Z/ /O.EXA.KDMX.WW.Y.0013.000000T0000Z-210315T2100Z/ Franklin-Grundy- Including the cities of Hampton, Grundy Center, Reinbeck, Conrad, Dike, and Wellsburg 1145 AM CDT Mon Mar 15 2021 ...WINTER WEATHER ADVISORY IN EFFECT UNTIL 4 PM CDT THIS AFTERNOON... ...WINTER STORM WARNING IS CANCELLED... * WHAT...Mixed precipitation. Little additional snow accumulations and ice accumulations of a light glaze. Winds gusting as high as 35 mph. * WHERE...Portions of northeast Iowa. * WHEN...Until 4 PM CDT this afternoon. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact at least the start of the evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ IAZ004>006-015-016-024-025-035>037-151745- /O.CAN.KDMX.WS.W.0005.000000T0000Z-210315T2100Z/ Emmet-Kossuth-Winnebago-Palo Alto-Hancock-Humboldt-Wright-Webster- Hamilton-Hardin- Including the cities of Estherville, Algona, Forest City, Lake Mills, Emmetsburg, Garner, Britt, Kanawha, Humboldt, Eagle Grove, Clarion, Belmond, Fort Dodge, Webster City, Iowa Falls, Eldora, and Ackley 1145 AM CDT Mon Mar 15 2021 ...WINTER STORM WARNING IS CANCELLED... Periods of drizzle or freezing drizzle may linger into the afternoon, but the worst of the winter precipitation has ended for this event. Roads may remain slick in spots however. Slow down and plan for extra travel time. $$ IAZ048-061-151745- /O.CAN.KDMX.WW.Y.0013.000000T0000Z-210315T1800Z/ Story-Jasper- Including the cities of Ames and Newton 1145 AM CDT Mon Mar 15 2021 ...WINTER WEATHER ADVISORY IS CANCELLED... Any impactful winter weather has ended for this event, so the advisory has been cancelled. $$ IAZ049-062-151745- /O.CAN.KDMX.WW.Y.0013.000000T0000Z-210315T2100Z/ Marshall-Poweshiek- Including the cities of Marshalltown and Grinnell 1145 AM CDT Mon Mar 15 2021 ...WINTER WEATHER ADVISORY IS CANCELLED... Periods of drizzle or freezing drizzle may linger into the afternoon, but the worst of the winter precipitation has ended for this event. $$ IAZ007-017-027-028-039-152100- /O.CON.KDMX.WS.W.0005.000000T0000Z-210315T2100Z/ Worth-Cerro Gordo-Butler-Bremer-Black Hawk- Including the cities of Northwood, Manly, Mason City, Clear Lake, Parkersburg, Clarksville, Shell Rock, Greene, Aplington, Allison, Dumont, Waverly, Waterloo, and Cedar Falls 1145 AM CDT Mon Mar 15 2021 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 4 PM CDT THIS AFTERNOON... * WHAT...Moderate to heavy snow into early afternoon, then lingering freezing drizzle. Additional snow accumulations of up to two inches and ice accumulations of a light glaze. Winds gusting as high as 35 mph. * WHERE...Northeast Iowa. * WHEN...Until 4 PM CDT this afternoon. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ IAZ050-152100- /O.CON.KDMX.WW.Y.0013.000000T0000Z-210315T2100Z/ Tama- Including the cities of Tama, Toledo, Traer, Dysart, and Gladbrook 1145 AM CDT Mon Mar 15 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 4 PM CDT THIS AFTERNOON... * WHAT...Periods of drizzle or freezing drizzle. Ice accumulations of a light glaze. * WHERE...Portions of east central Iowa. * WHEN...Until 4 PM CDT this afternoon. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact at least the start of the evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ For more information from the National Weather Service visit https://weather.gov/desmoines Small
122 WWUS43 KDMX 152041 WSWDMX URGENT - WINTER WEATHER MESSAGE National Weather Service Des Moines IA 341 PM CDT Mon Mar 15 2021 ...Winter Weather Headlines Will Expire... .Precipitation has ended, therefore the winter weather headlines will be allowed to expire. IAZ007-017-027-028-039-152145- /O.EXP.KDMX.WS.W.0005.000000T0000Z-210315T2100Z/ Worth-Cerro Gordo-Butler-Bremer-Black Hawk- Including the cities of Northwood, Manly, Mason City, Clear Lake, Parkersburg, Clarksville, Shell Rock, Greene, Aplington, Allison, Dumont, Waverly, Waterloo, and Cedar Falls 341 PM CDT Mon Mar 15 2021 ...WINTER STORM WARNING WILL EXPIRE AT 4 PM CDT THIS AFTERNOON... Precipitation has come to an end and the weather conditions are improving. A few slick spots are still possible on area roadways. Please drive with caution. $$ Krull IAZ026-038-050-152145- /O.EXP.KDMX.WW.Y.0013.000000T0000Z-210315T2100Z/ Franklin-Grundy-Tama- Including the cities of Hampton, Grundy Center, Reinbeck, Conrad, Dike, Wellsburg, Tama, Toledo, Traer, Dysart, and Gladbrook 341 PM CDT Mon Mar 15 2021 ...WINTER WEATHER ADVISORY WILL EXPIRE AT 4 PM CDT THIS AFTERNOON... Precipitation has come to an end and the weather conditions are improving. A few slick spots are still possible on area roadways. Please drive with caution. $$ Krull For more information from the National Weather Service visit https://weather.gov/desmoines
What forecasters said that day
The local office's own words before this winter weather advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Des Moines, IA wrote its last area forecast discussion before this winter weather advisory went out at Mar 13, 11:41 PM CST, 3 hours 21 minutes earlier.
Area forecast discussion, Mar 13, 11:41 PM CST, 3 hours 21 minutes before
Area Forecast Discussion National Weather Service Des Moines IA 1141 PM CST Sat Mar 13 2021 ...Updated 06z Aviation... .DISCUSSION.../Tonight through Saturday/ Issued at 257 PM CST Sat Mar 13 2021 Forecast highlights: -Winter Storm Sunday night into Monday -Another storm system mid-week -Big High Pressure late in the week into next weekend Tonight through Monday...There's a long list of challenges to consider during this time frame. 1. Strong Surface High over Great Lakes providing plenty of dry air into the state causing a delay in pops. 2. Precipitation type - most likely is either rain or snow, but some sleet is possible 3. Stout east winds related to both the pressure gradient and some mixing. 4. Omega bullseye within the dendritic layer in northern Iowa should provide intense snowfall rates by Sunday night. 5. Snow consistency appears to be mainly wet/sticky with onset and likely for entire event with low snow ratios. 6. Sharp rain/snow gradient on the south/southwest edge of the snow band. Large area of low pressure slowly moves east out of the Central Rockies and across Kansas/Oklahoma Sunday into Monday. The 500mb trough becomes negatively titled over the region by late Sunday night and then finally exits or gets sheared apart by the upper flow Monday night. The surface low by late Sunday night deepens to around 996mb over the TX/OK panhandles but weakens slightly by Monday afternoon as it enters the Ozarks. Out ahead of the surface low, good moisture transport and isentropic lift enter the southwest portion of the state past 06z tonight and gradually push east/northeast during the day Sunday. One the forecast problems is with the stubborn surface high pressure over the Great Lakes providing a shield of dry air over the state and soundings take very long to completely saturate Sunday. Delayed the onset of precipitation considerably from southwest to northeast Sunday morning and even some areas may not see any precipitation until the afternoon hours. Isentropic lift and moisture transport continue into the state Sunday and the condensation pressure deficit finally drops under 20mb by the late afternoon hours over the entire forecast area. Still, forecast soundings per NAM/GFS keep the fairly deep dry layer below 850mb through the morning hours across central Iowa and over the north likely not until past 00z Monday. MCW, ALO, FOD soundings remain dry below 850mb through at least 03z Monday. The southwest to south-central should see some rain beginning between 06z-09z Sunday. The other issue is with strong winds developing during the day and even though not anticipating any snow until late Sunday night, certainly with the decent crosswind and rain, traveling should prove challenging during the day Sunday into Sunday night. Certainly could witness some wind gusts over 40 mph late Sunday morning into the afternoon hours across the west to southwest and issued a Wind Advisory in this location. For the snow and other precipitation type by Sunday night into Monday. As mentioned, soundings don't completely saturate until late Sunday night across northern Iowa. However, there is intense omega within the the dendritic layer (which is completely saturated by 03z Monday), confident the snow will saturate the column quicker than what the forecast soundings suggest. Regardless, impacts from the falling snow look to begin overnight Sunday night into Monday and delayed the start time of the Winter Storm Watch. Soundings remain nearly isothermal along the 0C with intermittent brief and very tiny mid-level warm layer sneaking into late Sunday night into Monday and may result in brief periods of sleet with the onset. This is mainly along the southern fringe of the snow band, so Highway 30 to Interstate 80 areas. The consistency of the snow likely to remain fairly wet and sticky and low confidence in how quickly the snow will begin to accumulate. Snow ratios remain low, roughly around 8:1 across the north b/t 06-12z Monday. Certainly some melting is likely as it hits the ground, especially the hard surfaces. Still, with the tight pressure gradient and some mixing resulting in some wind gusts over 30 knots at times and impacts will be certainly visibility issues early Monday. Also, slightly higher confidence in the rain switching to snow further south and expanded the Watch a few counties southward. The other change was extended the expiration until the early evening Monday with snow looking to still be falling Monday afternoon. Confidence was borderline in upgrading and may reason holding off for now was the fact the delay in the snow and even all precipitation and models continue to trend with the slower progression of the low pressure. Thus, higher confidence with a bigger impact during the commute Monday morning. Tuesday through Thursday...Another low pressure system looks to impact portions of the state by Wednesday into Wednesday night. The surface low deepens to around 991mb according to the GFS. The low tracks across Missouri and the latest ECMWF is slower and further south than the GFS. Certainly potential for some snow over southern Iowa along with decent winds by the afternoon and evening. Friday and Saturday...large area of high pressure builds into the region late in the week and provides warmer temperatures and dry conditions during this time. && .AVIATION.../For the 06Z TAFS through 06Z Sunday night/ Issued at 1138 PM CST Sat Mar 13 2021 Rain showers are moving from southwest to northeast. As they move northeast, they will have a lot of dry air to contend with. However, there will be enough forcing to eventually saturate and allow rain to reach the surface at DSM, FOD, and OTM. MCW and ALO are expected to remain in the dry area. For Sunday, conditions should stay at least MVFR, and with VFR for much of the period. Gusty winds will likely be a bigger issue than CIGs or visibility for this afternoon. Beyond the 06z TAF period, snow showers are forecast across northern and central Iowa. For Monday, expect IFR CIGs and reduced visibility with snow showers. && .DMX WATCHES/WARNINGS/ADVISORIES... Wind Advisory from 7 AM to 7 PM CDT Sunday for IAZ033-044-045- 057-058-070-071-081-082-092-093. Winter Storm Watch from late Sunday night through Monday afternoon for IAZ004>007-015>017-023>028-034>039-047>050. && DISCUSSION...Podrazik AVIATION...Krull
Hazardous weather outlook, Mar 13, 3:17 PM CST, 11 hours 45 minutes before
Hazardous Weather Outlook National Weather Service Des Moines IA 317 PM CST Sat Mar 13 2021 IAZ046-059>062-072>075-083>086-094>097-142130- Greene-Dallas-Polk-Jasper-Poweshiek-Madison-Warren-Marion-Mahaska- Clarke-Lucas-Monroe-Wapello-Decatur-Wayne-Appanoose-Davis- 317 PM CST Sat Mar 13 2021 This Hazardous Weather Outlook is for portions of central Iowa. .DAY ONE...This afternoon and tonight No hazardous weather is expected at this time. .DAYS TWO THROUGH SEVEN...Sunday through Friday It will turn windy on Sunday. Rain on Sunday will transition to snow overnight. Accumulating snow mainly along and north of Interstate 80, but perhaps as far south as Highway 92, will impact the Monday morning commute. .SPOTTER INFORMATION STATEMENT... Spotter activation will not be needed, but snowfall reports are always appreciated. IAZ004>007-015>017-023>028-034>039-047>050-142130- Emmet-Kossuth-Winnebago-Worth-Palo Alto-Hancock-Cerro Gordo- Pocahontas-Humboldt-Wright-Franklin-Butler-Bremer-Calhoun-Webster- Hamilton-Hardin-Grundy-Black Hawk-Boone-Story-Marshall-Tama- 317 PM CST Sat Mar 13 2021 This Hazardous Weather Outlook is for portions of central Iowa. .DAY ONE...This afternoon and tonight No hazardous weather is expected at this time. .DAYS TWO THROUGH SEVEN...Sunday through Friday It will turn windy on Sunday and rain will transition to snow Sunday evening. A Winter Storm Watch is in effect for the area late Sunday night through Monday afternoon. Please refer to the National Weather Service website at weather.gov/desmoines for further details. .SPOTTER INFORMATION STATEMENT... Spotter activation will not be needed, but snowfall reports are always appreciated. IAZ033-044-045-057-058-070-071-081-082-092-093-142130- Sac-Crawford-Carroll-Audubon-Guthrie-Cass-Adair-Adams-Union- Taylor-Ringgold- 317 PM CST Sat Mar 13 2021 This Hazardous Weather Outlook is for portions of central Iowa. .DAY ONE...This afternoon and tonight No hazardous weather is expected at this time. .DAYS TWO THROUGH SEVEN...Sunday through Friday A Wind Advisory is in effect for the area late Sunday. Please refer to the National Weather Service website at weather.gov/desmoines for further details. Rain on Sunday will transition to snow overnight. Accumulating snow mainly along and north of Interstate 80, but perhaps as far south as Highway 92, will impact the Monday morning commute. .SPOTTER INFORMATION STATEMENT... Spotter activation will not be needed, but snowfall reports are always appreciated. Ansorge
The office that day
Everything else NWS Des Moines, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 14, 4:02 AM CDT | Winter Storm Warning | DMX | Black Hawk, Bremer, Butler, Calhoun, Cerro Gordo, Emmet and 14 more | 36 hr |
Nearby
Winter Weather Advisories in Iowa, 2021Every winter weather advisory in 2021
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.