Alert archive / Iowa / Winter Storm Warnings in 2018
Winter Storm Warning 6, NWS Des Moines, IA
NWS Des Moines, IA issued this winter storm warning at Apr 2, 2018, 2:00 PM CDT for 7 counties in Iowa. It took effect at Apr 3, 2018, 4:00 AM CDT. It was in force for 21 hr. 12 reports came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Apr 2, 2018, 2:00 PM CDT (19:00 UTC)
- In effect from
- Apr 3, 2018, 4:00 AM CDT
- Expired
- Apr 4, 2018, 1:00 AM CDT
- In force
- 21 hr
- Issued by
- NWS Des Moines, IA
Counties Cerro Gordo County, IA, Emmet County, IA, Hancock County, IA, Kossuth County, IA, Palo Alto County, IA, Winnebago County, IA, Worth County, IA
The radar
The Des Moines radar (KDMX), 167 km from the middle of the area, began a volume at 18:59 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Apr 3, 10:59 AM CDT | SNOW 4.1 | 1 Ssw Algona, IA | |
| Apr 3, 11:38 AM CDT | SNOW 2.5 | 1 Nnw Clear Lake, IA | |
| Apr 3, 1:16 PM CDT | SNOW 3 | 1 Nnw Clear Lake, IA | |
| Apr 3, 3:00 PM CDT | SNOW 3.8 | Clear Lake, IA | REPORT VIA SOCIAL MEDIA. |
| Apr 3, 5:42 PM CDT | SNOW 3 | 1 Nnw Clear Lake, IA | |
| Apr 3, 5:58 PM CDT | SNOW 6 | 5 W Fertile, IA | |
| Apr 3, 6:03 PM CDT | SNOW 3 | Mason City, IA | |
| Apr 3, 6:52 PM CDT | SNOW 8 | 1 N Ledyard, IA | VIA TWITTER. |
| Apr 3, 7:25 PM CDT | SNOW 4.5 | Wesley, IA | SOCIAL MEDIA. |
| Apr 3, 7:53 PM CDT | SNOW 3 | Estherville, IA | SOCIAL MEDIA. |
| Apr 3, 8:25 PM CDT | SNOW 4.8 | Mason City, IA | SOCIAL MEDIA. |
| Apr 3, 8:28 PM CDT | SNOW 6 | Emmetsburg, IA | SOCIAL MEDIA. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Minneapolis, MN (KMPX), launched 12:00Z, 7.0 hours before the alert went out and 183 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
- 1430 m above ground
- 0-6 km bulk shear
- 83 kt
- 0-1 km storm-relative helicity
- 126 m²/s²
- 0-3 km storm-relative helicity
- 268 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
336 WWUS43 KDMX 021900 WSWDMX URGENT - WINTER WEATHER MESSAGE National Weather Service Des Moines IA 200 PM CDT Mon Apr 2 2018 ...Late Season Winter Storm Tonight into Tuesday... .Snow will develop across northern Iowa tonight. The snow may become heavy at times late tonight into the day on Tuesday, especially across far northern Iowa. Further south, a wintry mix of snow, sleet, or freezing rain is expected. Total snowfall amounts will range from 6 to 8 inches near the Iowa/Minnesota border to 2 to 4 inches along the US Highway 20 corridor. Strong and gusty northwest winds will also develop with wind gusts over 40 mph possible by Tuesday afternoon. These winds will cause areas of blowing snow and hazardous driving conditions. IAZ004>007-015>017-030300- /O.UPG.KDMX.WS.A.0006.180403T0600Z-180404T0300Z/ /O.NEW.KDMX.WS.W.0006.180403T0600Z-180404T0600Z/ Emmet-Kossuth-Winnebago-Worth-Palo Alto-Hancock-Cerro Gordo- Including the cities of Estherville, Algona, Forest City, Lake Mills, Northwood, Manly, Emmetsburg, Garner, Britt, Kanawha, Mason City, and Clear Lake 200 PM CDT Mon Apr 2 2018 ...WINTER STORM WARNING IN EFFECT FROM 1 AM TUESDAY TO 1 AM CDT WEDNESDAY... * WHAT...Heavy snow expected. Total snow accumulations of 4 to 8 inches, heaviest amounts near the Iowa/Minnesota border, with a light glaze of ice possible. * WHERE...Far northern Iowa. * WHEN...From 1 AM Tuesday to 1 AM CDT Wednesday. * ADDITIONAL DETAILS...Plan on difficult travel conditions, including during the evening commute on Tuesday. Expect significant reductions in visibility at times. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning means significant amounts of snow, sleet and ice will make travel very hazardous or impossible. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ IAZ023>028-033>039-030300- /O.NEW.KDMX.WW.Y.0018.180403T0600Z-180404T0600Z/ Pocahontas-Humboldt-Wright-Franklin-Butler-Bremer-Sac-Calhoun- Webster-Hamilton-Hardin-Grundy-Black Hawk- Including the cities of Pocahontas, Laurens, Rolfe, Fonda, Gilmore City, Humboldt, Eagle Grove, Clarion, Belmond, Hampton, Parkersburg, Clarksville, Shell Rock, Greene, Aplington, Allison, Dumont, Waverly, Sac City, Lake View, Odebolt, Wall Lake, Schaller, Early, Rockwell City, Manson, Lake City, Pomeroy, Fort Dodge, Webster City, Iowa Falls, Eldora, Ackley, Grundy Center, Reinbeck, Conrad, Dike, Wellsburg, Waterloo, and Cedar Falls 200 PM CDT Mon Apr 2 2018 ...WINTER WEATHER ADVISORY IN EFFECT FROM 1 AM TUESDAY TO 1 AM CDT WEDNESDAY... * WHAT...Mixed precipitation expected. Total snow accumulations of 2 to 4 inches, with localized amounts up to 5 inches, and ice a light glaze of possible. * WHERE...North-central Iowa. * WHEN...From 1 AM Tuesday to 1 AM CDT Wednesday. * ADDITIONAL DETAILS...Plan on slippery road conditions, including during the evening commute on Tuesday. Expect reduced visibilities at times. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory means that periods of snow, sleet or freezing rain will cause travel difficulties. Expect slippery roads and limited visibilities, and use caution while driving. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ For more information from the National Weather Service visit http://weather.gov/desmoines
10 follow-up statements
576 WWUS43 KDMX 030227 WSWDMX URGENT - WINTER WEATHER MESSAGE National Weather Service Des Moines IA 927 PM CDT Mon Apr 2 2018 ...Late Season Winter Storm Tonight into Tuesday... .Snow will develop across northern Iowa late tonight. The snow may become heavy at times with visibilities reduced to around 1/2 mile or less, during the daylight hours Tuesday, especially across far northern Iowa. Further south, a wintry mix of snow, sleet, or freezing rain is expected. Total snowfall amounts will range from 6 to 8 inches near the Iowa/Minnesota border to 2 to 4 inches along the US Highway 20 corridor. Strong and gusty northwest winds will also develop with wind gusts over 40 mph possible by Tuesday afternoon. These winds will cause areas of blowing snow and hazardous driving conditions. IAZ004>007-015>017-031030- /O.CON.KDMX.WS.W.0006.180403T0600Z-180404T0600Z/ Emmet-Kossuth-Winnebago-Worth-Palo Alto-Hancock-Cerro Gordo- Including the cities of Estherville, Algona, Forest City, Lake Mills, Northwood, Manly, Emmetsburg, Garner, Britt, Kanawha, Mason City, and Clear Lake 927 PM CDT Mon Apr 2 2018 ...WINTER STORM WARNING REMAINS IN EFFECT FROM 1 AM TUESDAY TO 1 AM CDT WEDNESDAY... * WHAT...Heavy snow expected. Total snow accumulations of 4 to 8 inches, heaviest amounts near the Iowa/Minnesota border, with a light glaze of ice possible. * WHERE...Far northern Iowa. * WHEN...From 1 AM Tuesday to 1 AM CDT Wednesday. * ADDITIONAL DETAILS...Plan on difficult travel conditions, including during the morning and evening commutes on Tuesday. Expect significant reductions in visibility at times. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning for snow means severe winter weather conditions will make travel very hazardous or impossible. 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. && $$ IAZ023>028-033>039-031030- /O.CON.KDMX.WW.Y.0018.180403T0600Z-180404T0600Z/ Pocahontas-Humboldt-Wright-Franklin-Butler-Bremer-Sac-Calhoun- Webster-Hamilton-Hardin-Grundy-Black Hawk- Including the cities of Pocahontas, Laurens, Rolfe, Fonda, Gilmore City, Humboldt, Eagle Grove, Clarion, Belmond, Hampton, Parkersburg, Clarksville, Shell Rock, Greene, Aplington, Allison, Dumont, Waverly, Sac City, Lake View, Odebolt, Wall Lake, Schaller, Early, Rockwell City, Manson, Lake City, Pomeroy, Fort Dodge, Webster City, Iowa Falls, Eldora, Ackley, Grundy Center, Reinbeck, Conrad, Dike, Wellsburg, Waterloo, and Cedar Falls 927 PM CDT Mon Apr 2 2018 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 1 AM TUESDAY TO 1 AM CDT WEDNESDAY... * WHAT...Mixed precipitation expected. Total snow accumulations of 2 to 4 inches, with localized amounts up to 5 inches, and a light glaze of ice possible. * WHERE...Northern portions of central Iowa. * WHEN...From 1 AM Tuesday to 1 AM CDT Wednesday. * ADDITIONAL DETAILS...Plan on slippery road conditions, including during the evening commute on Tuesday. Expect reduced visibilities at times. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory means that periods of snow, sleet or freezing rain will cause travel difficulties. Expect slippery roads and limited visibilities, and use caution while driving. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ For more information from the National Weather Service visit http://weather.gov/desmoines
902 WWUS43 KDMX 030448 WSWDMX URGENT - WINTER WEATHER MESSAGE National Weather Service Des Moines IA 1148 PM CDT Mon Apr 2 2018 ...Late Season Winter Storm Late Tonight into Tuesday... .Snow will develop across northern Iowa through the early morning hours Tuesday and persist through the day. The snow may become heavy at times with visibilities reduced to around 1/2 mile or less, during the daylight hours Tuesday, especially across far northern Iowa. Further south, a wintry mix of snow, sleet, or freezing rain is expected. Total snowfall amounts will range from 6 to 8 inches near the Iowa/Minnesota border to 2 to 4 inches along the US Highway 20 corridor. Strong and gusty northwest winds will also develop with wind gusts over 40 mph possible by Tuesday afternoon. These winds will cause areas of blowing snow and hazardous driving conditions. IAZ004>007-015>017-031300- /O.EXT.KDMX.WS.W.0006.180403T0900Z-180404T0600Z/ Emmet-Kossuth-Winnebago-Worth-Palo Alto-Hancock-Cerro Gordo- Including the cities of Estherville, Algona, Forest City, Lake Mills, Northwood, Manly, Emmetsburg, Garner, Britt, Kanawha, Mason City, and Clear Lake 1148 PM CDT Mon Apr 2 2018 ...WINTER STORM WARNING NOW IN EFFECT FROM 4 AM TUESDAY TO 1 AM CDT WEDNESDAY... * WHAT...Heavy snow expected. Total snow accumulations of 4 to 8 inches, heaviest amounts near the Iowa/Minnesota border, with a light glaze of ice possible. * WHERE...Far northern Iowa. * WHEN...From 4 AM Tuesday to 1 AM CDT Wednesday. * ADDITIONAL DETAILS...Plan on difficult travel conditions, including during the morning and evening commutes on Tuesday. Expect significant reductions in visibility at times. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning for snow means severe winter weather conditions will make travel very hazardous or impossible. 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. && $$ IAZ023>028-033>039-031300- /O.EXT.KDMX.WW.Y.0018.180403T0900Z-180404T0600Z/ Pocahontas-Humboldt-Wright-Franklin-Butler-Bremer-Sac-Calhoun- Webster-Hamilton-Hardin-Grundy-Black Hawk- Including the cities of Pocahontas, Laurens, Rolfe, Fonda, Gilmore City, Humboldt, Eagle Grove, Clarion, Belmond, Hampton, Parkersburg, Clarksville, Shell Rock, Greene, Aplington, Allison, Dumont, Waverly, Sac City, Lake View, Odebolt, Wall Lake, Schaller, Early, Rockwell City, Manson, Lake City, Pomeroy, Fort Dodge, Webster City, Iowa Falls, Eldora, Ackley, Grundy Center, Reinbeck, Conrad, Dike, Wellsburg, Waterloo, and Cedar Falls 1148 PM CDT Mon Apr 2 2018 ...WINTER WEATHER ADVISORY NOW IN EFFECT FROM 4 AM TUESDAY TO 1 AM CDT WEDNESDAY... * WHAT...Mixed precipitation expected. Total snow accumulations of 2 to 4 inches, with localized amounts up to 5 inches, and a light glaze of ice possible. * WHERE...Northern portions of central Iowa. * WHEN...From 4 AM Tuesday to 1 AM CDT Wednesday. * ADDITIONAL DETAILS...Plan on slippery road conditions, including during the morning and evening commutes on Tuesday. Expect reduced visibilities at times. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory means that periods of snow, sleet or freezing rain will cause travel difficulties. Expect slippery roads and limited visibilities, and use caution while driving. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ For more information from the National Weather Service visit http://weather.gov/desmoines
638 WWUS43 KDMX 030913 WSWDMX URGENT - WINTER WEATHER MESSAGE National Weather Service Des Moines IA 413 AM CDT Tue Apr 3 2018 ...Late Season Winter Storm Late Tonight into Tuesday... .Snow will continue to move across northwest Iowa through the early morning hours before spreading eastward through the day. The snow may become heavy at times with visibilities reduced to around 1/2 mile or less across far northern Iowa. Further south, a wintry mix of snow, sleet, or freezing rain is expected. Total snowfall amounts will range from 4 to 7 inches near the Iowa/Minnesota border to 2 to 4 inches along the US Highway 20 corridor. Strong and gusty northwest winds will also develop by this afternoon with wind gusts over 40 mph possible. These winds will cause areas of blowing snow and hazardous driving conditions. IAZ004>007-015>017-031715- /O.CON.KDMX.WS.W.0006.000000T0000Z-180404T0600Z/ Emmet-Kossuth-Winnebago-Worth-Palo Alto-Hancock-Cerro Gordo- Including the cities of Estherville, Algona, Forest City, Lake Mills, Northwood, Manly, Emmetsburg, Garner, Britt, Kanawha, Mason City, and Clear Lake 413 AM CDT Tue Apr 3 2018 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 1 AM CDT WEDNESDAY... * WHAT...Moderate to heavy snow expected. Total snow accumulations of 4 to 7 inches, heaviest amounts near the Iowa/Minnesota border. A light glaze of ice is possible. * WHERE...Far northern Iowa. * WHEN...From 4 AM Tuesday to 1 AM CDT Wednesday. * ADDITIONAL DETAILS...Plan on difficult travel conditions, including during the morning and evening commutes on Tuesday. Expect significant reductions in visibility at times. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning means significant amounts of snow, sleet and ice will make travel very hazardous or impossible. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ IAZ044-045-031715- /O.EXA.KDMX.WW.Y.0018.000000T0000Z-180404T0600Z/ Crawford-Carroll- Including the cities of Denison and Carroll 413 AM CDT Tue Apr 3 2018 ...WINTER WEATHER ADVISORY IN EFFECT UNTIL 1 AM CDT WEDNESDAY... * WHAT...Mixed precipitation including snow expected. Total snow accumulations of 1 to 3 inches. Light ice accumulations may occur. * WHERE...Portions of west central Iowa. * WHEN...From 4 AM Tuesday to 1 AM CDT Wednesday. * ADDITIONAL DETAILS...Plan on slippery road conditions, including during the morning and evening commutes on Tuesday. Expect reduced visibilities at times. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory means that periods of snow, sleet or freezing rain will cause travel difficulties. Expect slippery roads and limited visibilities, and use caution while driving. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ IAZ023>028-033>039-031715- /O.CON.KDMX.WW.Y.0018.000000T0000Z-180404T0600Z/ Pocahontas-Humboldt-Wright-Franklin-Butler-Bremer-Sac-Calhoun- Webster-Hamilton-Hardin-Grundy-Black Hawk- Including the cities of 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 413 AM CDT Tue Apr 3 2018 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 1 AM CDT WEDNESDAY... * WHAT...Snow expected but mixed precipitation may occur. Total snow accumulations of 2 to 4 inches, with localized amounts up to 5 inches. A light glaze of ice is possible. * WHERE...Northern portions of central Iowa. * WHEN...From 4 AM Tuesday to 1 AM CDT Wednesday. * ADDITIONAL DETAILS...Plan on slippery road conditions, including during the morning and evening commutes on Tuesday. Expect reduced visibilities at times. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory means that periods of snow, sleet or freezing rain will cause travel difficulties. Expect slippery roads and limited visibilities, and use caution while driving. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ For more information from the National Weather Service visit http://weather.gov/desmoines
921 WWUS43 KDMX 031226 WSWDMX URGENT - WINTER WEATHER MESSAGE National Weather Service Des Moines IA 726 AM CDT Tue Apr 3 2018 ...Winter Storm to Impact Iowa Today.. .Snow over northwest and north central will expand east this morning. The snow may become heavy at times with visibilities reduced to around 1/2 mile or less across far northern Iowa. Further south, a wintry mix of snow and freezing drizzle is expected. Total snowfall amounts will range from 4 to 7 inches near the Iowa/Minnesota border to 2 to 4 inches along the US Highway 20 corridor. Strong and gusty northwest winds will also develop by this afternoon with wind gusts over 40 mph possible. These winds will cause areas of blowing snow and hazardous driving conditions. IAZ004>007-015>017-032030- /O.CON.KDMX.WS.W.0006.000000T0000Z-180404T0600Z/ Emmet-Kossuth-Winnebago-Worth-Palo Alto-Hancock-Cerro Gordo- Including the cities of Estherville, Algona, Forest City, Lake Mills, Northwood, Manly, Emmetsburg, Garner, Britt, Kanawha, Mason City, and Clear Lake 726 AM CDT Tue Apr 3 2018 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 1 AM CDT WEDNESDAY... * WHAT...Moderate to heavy snow expected. Total snow accumulations of 4 to 7 inches, heaviest amounts near the Iowa/Minnesota border. A light glaze of ice is possible. * WHERE...Far northern Iowa. * WHEN...From 4 AM Tuesday to 1 AM CDT Wednesday. * ADDITIONAL DETAILS...Plan on difficult travel conditions, including during the morning and evening commutes on Tuesday. Expect significant reductions in visibility at times. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning for snow means severe winter weather conditions will make travel very hazardous or impossible. If you must travel, keep an extra flashlight, food and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ IAZ023>028-033>039-044-045-032030- /O.CON.KDMX.WW.Y.0018.000000T0000Z-180404T0600Z/ Pocahontas-Humboldt-Wright-Franklin-Butler-Bremer-Sac-Calhoun- Webster-Hamilton-Hardin-Grundy-Black Hawk-Crawford-Carroll- Including the cities of 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, Cedar Falls, Denison, and Carroll 726 AM CDT Tue Apr 3 2018 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 1 AM CDT WEDNESDAY... * WHAT...Snow expected but mixed precipitation may occur. Total snow accumulations of 2 to 4 inches, with localized amounts up to 5 inches. A light glaze of ice is possible. * WHERE...Northern portions of central Iowa. * WHEN...From 4 AM Tuesday to 1 AM CDT Wednesday. * ADDITIONAL DETAILS...Plan on slippery road conditions, including during the morning and evening commutes on Tuesday. Expect reduced visibilities at times. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory means that periods of snow, sleet or freezing rain will cause travel difficulties. Expect slippery roads and limited visibilities, and use caution while driving. 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 http://weather.gov/desmoines
072 WWUS43 KDMX 031509 WSWDMX URGENT - WINTER WEATHER MESSAGE National Weather Service Des Moines IA 1009 AM CDT Tue Apr 3 2018 ...Winter Storm to Impact Iowa Today.. .Snow over northwest and north central Iowa continues to expand south and east late this morning and into the early afternoon. The snow is heavy at times with visibilities reduced to around 1/2 mile or less across far northern Iowa and portions of west central Iowa. Further south, a wintry mix of snow and freezing drizzle is expected before switching to all snow. Total snowfall amounts will range from 4 to 7 inches near the Iowa/Minnesota border to 2 to 4 inches along the US Highway 20 corridor. Up to an inch possible around the Ames to Des Moines Metro areas. Strong and gusty northwest winds are expected to develop this afternoon when gusts over 40 mph are possible. These winds will cause areas of blowing snow and hazardous driving conditions. IAZ004>007-015>017-032315- /O.CON.KDMX.WS.W.0006.000000T0000Z-180404T0600Z/ Emmet-Kossuth-Winnebago-Worth-Palo Alto-Hancock-Cerro Gordo- Including the cities of Estherville, Algona, Forest City, Lake Mills, Northwood, Manly, Emmetsburg, Garner, Britt, Kanawha, Mason City, and Clear Lake 1009 AM CDT Tue Apr 3 2018 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 1 AM CDT WEDNESDAY... * WHAT...Heavy snow. Additional snow accumulations of 3 to 6 inches are expected. Strong northwest winds of 20 to 30 mph with gusts near 40 mph are anticipated this afternoon into the evening producing some blowing snow and reduced visibility. * WHERE...Far northern Iowa. * WHEN...Until 1 AM CDT Wednesday. * ADDITIONAL DETAILS...Plan on difficult travel conditions through the late afternoon. Expect significant reductions in visibility at times. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning for snow means severe winter weather conditions will make travel very hazardous or impossible. 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. && $$ IAZ046>050-057>062-070-071-032315- /O.EXA.KDMX.WW.Y.0018.000000T0000Z-180404T0600Z/ Greene-Boone-Story-Marshall-Tama-Audubon-Guthrie-Dallas-Polk- Jasper-Poweshiek-Cass-Adair- Including the cities of Jefferson, Boone, Ames, Marshalltown, Tama, Toledo, Traer, Dysart, Gladbrook, Audubon, Exira, Guthrie Center, Panora, Bayard, Casey, Perry, Waukee, Adel, Des Moines, Newton, Grinnell, Atlantic, Greenfield, Stuart, Adair, and Fontanelle 1009 AM CDT Tue Apr 3 2018 ...WINTER WEATHER ADVISORY IN EFFECT UNTIL 1 AM CDT WEDNESDAY... * WHAT...Mixed precipitation. Up to an inch of snow is possible. With the burst of snow anticipated along with the strong northwest winds developing late this morning into the afternoon hours, some visibility restrictions are expected. This is likely to impact the evening commute. * WHERE...Central Iowa. * WHEN...Until 1 AM CDT Wednesday. * ADDITIONAL DETAILS...Plan on slippery road conditions, including during the evening commute. Expect reduced visibilities at times. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory means that periods of snow, sleet or freezing rain will cause travel difficulties. Expect slippery roads and limited visibilities, and use caution while driving. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ IAZ023>028-033>039-044-045-032315- /O.CON.KDMX.WW.Y.0018.000000T0000Z-180404T0600Z/ Pocahontas-Humboldt-Wright-Franklin-Butler-Bremer-Sac-Calhoun- Webster-Hamilton-Hardin-Grundy-Black Hawk-Crawford-Carroll- Including the cities of Pocahontas, Laurens, Rolfe, Fonda, Gilmore City, Humboldt, Eagle Grove, Clarion, Belmond, Hampton, Parkersburg, Clarksville, Shell Rock, Greene, Aplington, Allison, Dumont, Waverly, Sac City, Lake View, Odebolt, Wall Lake, Schaller, Early, Rockwell City, Manson, Lake City, Pomeroy, Fort Dodge, Webster City, Iowa Falls, Eldora, Ackley, Grundy Center, Reinbeck, Conrad, Dike, Wellsburg, Waterloo, Cedar Falls, Denison, and Carroll 1009 AM CDT Tue Apr 3 2018 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 1 AM CDT WEDNESDAY... * WHAT...Mainly snow and potentially blowing snow resulting in visibility restrictions. An additional snow accumulations of 1 to 3 inches. Strong northwest winds are forecast to develop this afternoon and evening, with gusts near 40 mph possible. * WHERE...Northern portions of central Iowa. * WHEN...Until 1 AM CDT Wednesday. * ADDITIONAL DETAILS...Plan on snow covered and slick road conditions, including during the evening commute. Expect reduced visibilities at times when the blustery northwest winds develop later today. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory means that periods of snow, sleet or freezing rain will cause travel difficulties. Expect slippery roads and limited visibilities, and use caution while driving. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ Podrazik For more information from the National Weather Service visit http://weather.gov/desmoines
929 WWUS43 KDMX 031814 WSWDMX URGENT - WINTER WEATHER MESSAGE National Weather Service Des Moines IA 114 PM CDT Tue Apr 3 2018 ...Winter Storm to Impact Iowa Today.. .A band of moderate to locally heavy snow located over central to northeast portions of the headlined area will continue to move east. A brief break in the snow over western to northern Iowa before another snow band moves in later this afternoon. With the secondary snow band, gusty winds are likely to increase and lead to visibility restrictions as low as one half mile at times. The blowing snow and reduced visibility conditions are anticipated to impact the evening commute. IAZ004>007-015>017-040215- /O.CON.KDMX.WS.W.0006.000000T0000Z-180404T0600Z/ Emmet-Kossuth-Winnebago-Worth-Palo Alto-Hancock-Cerro Gordo- Including the cities of Estherville, Algona, Forest City, Lake Mills, Northwood, Manly, Emmetsburg, Garner, Britt, Kanawha, Mason City, and Clear Lake 114 PM CDT Tue Apr 3 2018 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 1 AM CDT WEDNESDAY... * WHAT...Heavy snow. Additional snow accumulations of 3 to 5 inches are expected. Strong northwest winds of 20 to 30 mph with gusts near 40 mph are anticipated late this afternoon into the evening producing some blowing snow and reduced visibility. * WHERE...Far northern Iowa. * WHEN...Until 1 AM CDT Wednesday. * ADDITIONAL DETAILS...Plan on difficult travel conditions into this evening, especially during the rush hour commute. Expect significant reductions in visibility at times. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning for snow means severe winter weather conditions will make travel very hazardous or impossible. 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. && $$ IAZ023>028-033>039-044>050-057>062-070-071-040215- /O.CON.KDMX.WW.Y.0018.000000T0000Z-180404T0600Z/ Pocahontas-Humboldt-Wright-Franklin-Butler-Bremer-Sac-Calhoun- Webster-Hamilton-Hardin-Grundy-Black Hawk-Crawford-Carroll-Greene- Boone-Story-Marshall-Tama-Audubon-Guthrie-Dallas-Polk-Jasper- Poweshiek-Cass-Adair- Including the cities of Pocahontas, Laurens, Rolfe, Fonda, Gilmore City, Humboldt, Eagle Grove, Clarion, Belmond, Hampton, Parkersburg, Clarksville, Shell Rock, Greene, Aplington, Allison, Dumont, Waverly, Sac City, Lake View, Odebolt, Wall Lake, Schaller, Early, Rockwell City, Manson, Lake City, Pomeroy, Fort Dodge, Webster City, Iowa Falls, Eldora, Ackley, Grundy Center, Reinbeck, Conrad, Dike, Wellsburg, Waterloo, Cedar Falls, Denison, Carroll, Jefferson, Boone, Ames, Marshalltown, Tama, Toledo, Traer, Dysart, Gladbrook, Audubon, Exira, Guthrie Center, Panora, Bayard, Casey, Perry, Waukee, Adel, Des Moines, Newton, Grinnell, Atlantic, Greenfield, Stuart, Adair, and Fontanelle 114 PM CDT Tue Apr 3 2018 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 1 AM CDT WEDNESDAY... * WHAT...Snow and potentially blowing snow resulting in visibility restrictions. Additional snow accumulations of 1 to 3 inches, with the higher amounts along Highway 20 corridor northward. * WHERE...Central Iowa. * WHEN...Until 1 AM CDT Wednesday. * ADDITIONAL DETAILS...Plan on slippery road conditions, including during the evening commute. Expect reduced visibilities at times due to the strong northwest winds developing later this afternoon into the evening. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory means that periods of snow, sleet or freezing rain will cause travel difficulties. Expect slippery roads and limited visibilities, and use caution while driving. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ Podrazik For more information from the National Weather Service visit http://weather.gov/desmoines
425 WWUS43 KDMX 032222 WSWDMX URGENT - WINTER WEATHER MESSAGE National Weather Service Des Moines IA 522 PM CDT Tue Apr 3 2018 ...Winter Storm Continues this Evening for Northern Iowa.. .An area of moderate to locally heavy snow continues to move through eastern portions of north central Iowa. Visibilities have dropped to around 1 mile or less within this area of snow. Northwest winds will continue to become strong and gusty across north central Iowa this evening. The combination of lingering snowfall and gusty winds will allow visibility restrictions to drop to as low as one half mile or less at times. The blowing snow and reduced visibility conditions are expected to continue through the mid evening hours. As light snow tapers off by mid to late evening, some blowing and drifting snow is still expected, however visibility restrictions are expected to improve some toward late evening. IAZ004>007-015>017-040600- /O.CON.KDMX.WS.W.0006.000000T0000Z-180404T0600Z/ Emmet-Kossuth-Winnebago-Worth-Palo Alto-Hancock-Cerro Gordo- Including the cities of Estherville, Algona, Forest City, Lake Mills, Northwood, Manly, Emmetsburg, Garner, Britt, Kanawha, Mason City, and Clear Lake 522 PM CDT Tue Apr 3 2018 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 1 AM CDT WEDNESDAY... * WHAT...Snow. Additional snow accumulations of 1 to 2 inches are expected through mid to late evening. Strong northwest winds of 20 to 30 mph with gusts near 40 mph will continue to produce some blowing and drifting snow and reduced visibility. * WHERE...Far northern Iowa. * WHEN...Until 1 AM CDT Wednesday. * ADDITIONAL DETAILS...Plan on difficult travel conditions into this evening, especially during the rush hour commute. Expect significant reductions in visibility at times. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning for snow means severe winter weather conditions will make travel very hazardous or impossible. 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. && $$ IAZ023>028-033>039-044>050-057>062-070-071-040600- /O.CON.KDMX.WW.Y.0018.000000T0000Z-180404T0600Z/ Pocahontas-Humboldt-Wright-Franklin-Butler-Bremer-Sac-Calhoun- Webster-Hamilton-Hardin-Grundy-Black Hawk-Crawford-Carroll-Greene- Boone-Story-Marshall-Tama-Audubon-Guthrie-Dallas-Polk-Jasper- Poweshiek-Cass-Adair- Including the cities of Pocahontas, Laurens, Rolfe, Fonda, Gilmore City, Humboldt, Eagle Grove, Clarion, Belmond, Hampton, Parkersburg, Clarksville, Shell Rock, Greene, Aplington, Allison, Dumont, Waverly, Sac City, Lake View, Odebolt, Wall Lake, Schaller, Early, Rockwell City, Manson, Lake City, Pomeroy, Fort Dodge, Webster City, Iowa Falls, Eldora, Ackley, Grundy Center, Reinbeck, Conrad, Dike, Wellsburg, Waterloo, Cedar Falls, Denison, Carroll, Jefferson, Boone, Ames, Marshalltown, Tama, Toledo, Traer, Dysart, Gladbrook, Audubon, Exira, Guthrie Center, Panora, Bayard, Casey, Perry, Waukee, Adel, Des Moines, Newton, Grinnell, Atlantic, Greenfield, Stuart, Adair, and Fontanelle 522 PM CDT Tue Apr 3 2018 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 1 AM CDT WEDNESDAY... * WHAT...Snow and potentially blowing snow resulting in visibility restrictions. Additional snow accumulations of around a dusting along the Interstate 80 corridor to as much as 1 to 2 inches along the Highway 20 corridor northward. * WHERE...Central Iowa. * WHEN...Until 1 AM CDT Wednesday. * ADDITIONAL DETAILS...Plan on slippery road conditions, including during the evening commute. Expect reduced visibilities mainly along the Highway 20 corridor at times due to the strong northwest winds and the potential for blowing and drifting snow. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory means that periods of snow, sleet or freezing rain will cause travel difficulties. Expect slippery roads and limited visibilities, and use caution while driving. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ For more information from the National Weather Service visit http://weather.gov/desmoines
153 WWUS43 KDMX 040021 WSWDMX URGENT - WINTER WEATHER MESSAGE National Weather Service Des Moines IA 721 PM CDT Tue Apr 3 2018 ...Winter Storm Continues this Evening for Northern Iowa.. .Light snow will taper off through the mid to late evening hours across northern Iowa. However strong and gusty northwest winds will continue to increase through the evening allowing for areas of blowing and drifting snow especially in rural, open areas. Visibilities may be reduced to around one half mile of less at times with the light snow and blowing snow. Drifting snow across roadways will cause slick spots. IAZ044>048-057>062-070-071-040130- /O.CAN.KDMX.WW.Y.0018.000000T0000Z-180404T0600Z/ Crawford-Carroll-Greene-Boone-Story-Audubon-Guthrie-Dallas-Polk- Jasper-Poweshiek-Cass-Adair- Including the cities of Denison, Carroll, Jefferson, Boone, Ames, Audubon, Exira, Guthrie Center, Panora, Bayard, Casey, Perry, Waukee, Adel, Des Moines, Newton, Grinnell, Atlantic, Greenfield, Stuart, Adair, and Fontanelle 721 PM CDT Tue Apr 3 2018 ...WINTER WEATHER ADVISORY IS CANCELLED... Very light snow continues in eastern portions of central Iowa with and is expected to taper off through the next hour or so. Little visibility restrictions and no accumulation is expected. Snow has ended across the central and western portions of central Iowa. Therefore the advisory has been cancelled. A few flurries may still be possible through the next few hours. $$ IAZ004>007-015>017-040600- /O.CON.KDMX.WS.W.0006.000000T0000Z-180404T0600Z/ Emmet-Kossuth-Winnebago-Worth-Palo Alto-Hancock-Cerro Gordo- Including the cities of Estherville, Algona, Forest City, Lake Mills, Northwood, Manly, Emmetsburg, Garner, Britt, Kanawha, Mason City, and Clear Lake 721 PM CDT Tue Apr 3 2018 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 1 AM CDT WEDNESDAY... * WHAT...Light snow and blowing, drifting snow. Little or no additional snow accumulations are expected, however strong northwest winds of 25 to 35 mph with gusts 45 mph will continue to produce some blowing and drifting snow and reduced visibility to around one half mile at times. * WHERE...Far northern Iowa. * WHEN...Until 1 AM CDT Wednesday. * ADDITIONAL DETAILS...Plan on difficult travel conditions this evening. Expect significant reductions in visibility, especially in rural, open areas. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning for snow and blowing snow means severe winter weather conditions will make travel very hazardous or impossible. If you must travel, keep an extra flashlight, food and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ IAZ023>028-033>039-049-050-040600- /O.CON.KDMX.WW.Y.0018.000000T0000Z-180404T0600Z/ Pocahontas-Humboldt-Wright-Franklin-Butler-Bremer-Sac-Calhoun- Webster-Hamilton-Hardin-Grundy-Black Hawk-Marshall-Tama- Including the cities of 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, Cedar Falls, Marshalltown, Tama, Toledo, Traer, Dysart, and Gladbrook 721 PM CDT Tue Apr 3 2018 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 1 AM CDT WEDNESDAY... * WHAT...Light snow and areas of blowing, drifting snow. Any additional accumulations will be around an inch or less. Visibility restrictions down to one half mile or less can be expected in rural, open areas. * WHERE...Central Iowa. * WHEN...Until 1 AM CDT Wednesday. * ADDITIONAL DETAILS...Plan on slippery road conditions from drifting snow. Expect significant visibility restrictions, especially in rural, open areas. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory for snow and blowing snow means periods of snow and blowing snow will cause primarily travel difficulties. Expect snow covered roads and limited visibilities, and use caution while driving. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ For more information from the National Weather Service visit http://weather.gov/desmoines
218 WWUS43 KDMX 040355 WSWDMX URGENT - WINTER WEATHER MESSAGE National Weather Service Des Moines IA 1055 PM CDT Tue Apr 3 2018 ...Winter Storm Winding Down Late this Evening.. .Some light flurries remain across the area and will continue through midnight before tapering off completely. Strong and gusty northwest winds continue to produce areas of blowing and drifting snow. Visibility restrictions down to 1 to 2 miles at times are still expected into the early morning hours, especially in the rural, open areas. IAZ004>007-015>017-040600- /O.CON.KDMX.WS.W.0006.000000T0000Z-180404T0600Z/ Emmet-Kossuth-Winnebago-Worth-Palo Alto-Hancock-Cerro Gordo- Including the cities of Estherville, Algona, Forest City, Lake Mills, Northwood, Manly, Emmetsburg, Garner, Britt, Kanawha, Mason City, and Clear Lake 1055 PM CDT Tue Apr 3 2018 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 1 AM CDT WEDNESDAY... * WHAT...Flurries and areas of blowing and drifting snow. Visibilities down to 1 to 2 miles at times, and slick roads can be expected. * WHERE...Far northern Iowa. * WHEN...Until 1 AM CDT Wednesday. * ADDITIONAL DETAILS...Plan on difficult travel conditions due to blowing and drifting snow. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning for snow and blowing snow means severe winter weather conditions will make travel very hazardous or impossible. If you must travel, keep an extra flashlight, food and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ IAZ023>028-033>039-049-050-040600- /O.CON.KDMX.WW.Y.0018.000000T0000Z-180404T0600Z/ Pocahontas-Humboldt-Wright-Franklin-Butler-Bremer-Sac-Calhoun- Webster-Hamilton-Hardin-Grundy-Black Hawk-Marshall-Tama- Including the cities of 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, Cedar Falls, Marshalltown, Tama, Toledo, Traer, Dysart, and Gladbrook 1055 PM CDT Tue Apr 3 2018 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 1 AM CDT WEDNESDAY... * WHAT...Flurries and areas of blowing and drifting snow. Visibilities down to 1 to 2 miles at times, and slick roads can be expected. * WHERE...Central Iowa. * WHEN...Until 1 AM CDT Wednesday. * ADDITIONAL DETAILS...Plan on slippery road conditions from drifting snow. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory for snow and blowing snow means periods of snow and blowing snow will cause primarily travel difficulties. Expect snow covered roads and limited visibilities, and use caution while driving. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ For more information from the National Weather Service visit http://weather.gov/desmoines
759 WWUS43 KDMX 040554 WSWDMX URGENT - WINTER WEATHER MESSAGE National Weather Service Des Moines IA 1254 AM CDT Wed Apr 4 2018 ...Accumulating Snow Ending Across the Area... IAZ004>007-015>017-040700- /O.EXP.KDMX.WS.W.0006.000000T0000Z-180404T0600Z/ Emmet-Kossuth-Winnebago-Worth-Palo Alto-Hancock-Cerro Gordo- Including the cities of Estherville, Algona, Forest City, Lake Mills, Northwood, Manly, Emmetsburg, Garner, Britt, Kanawha, Mason City, and Clear Lake 1254 AM CDT Wed Apr 4 2018 ...WINTER STORM WARNING WILL EXPIRE AT 1 AM CDT EARLY THIS MORNING... Snow will continue to end across the area. Icy conditions will persist as some blowing snow will keep roadways partially snow covered at times. $$ IAZ023>028-033>039-049-050-040700- /O.EXP.KDMX.WW.Y.0018.000000T0000Z-180404T0600Z/ Pocahontas-Humboldt-Wright-Franklin-Butler-Bremer-Sac-Calhoun- Webster-Hamilton-Hardin-Grundy-Black Hawk-Marshall-Tama- Including the cities of 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, Cedar Falls, Marshalltown, Tama, Toledo, Traer, Dysart, and Gladbrook 1254 AM CDT Wed Apr 4 2018 ...WINTER WEATHER ADVISORY WILL EXPIRE AT 1 AM CDT EARLY THIS MORNING... Snow is ending across the area. A few icy patches are likely yet through the night as areas of blowing snow persists. $$ For more information from the National Weather Service visit http://weather.gov/desmoines
What forecasters said that day
The local office's own words before this winter storm warning 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 storm warning went out at Apr 2, 6:43 AM CDT, 7 hours 17 minutes earlier.
Area forecast discussion, Apr 2, 6:43 AM CDT, 7 hours 17 minutes before
Area Forecast Discussion National Weather Service Des Moines IA 643 AM CDT Mon Apr 2 2018 ...Updated for 12z Aviation Discussion... .SHORT TERM.../Today/ Issued at 409 AM CDT Mon Apr 2 2018 Bottom Line up Front... Generally quiet, cold weather expected today, with effectively nil-impact drizzle/flurries possible across the CWA. Setup... 08z Water vapor imagery continuing to pick up on seemingly permanent upper low spinning over the Hudson Bay. Meanwhile, water vapor imagery also picking up on a shortwave dropping into northern Washington from British Columbia. This will be a synoptic- scale driver for the winter event mentioned below in the long- term section. Sfc analysis showing what is probably best-described as an broad region of height falls coming off the Rockies. Concurrently, a 1020mb sfc high has slid over southeastern Iowa. Where there has been snow from earlier today, temperatures have plummeted. Centerville has dropped to 14 degrees, where Ottumwa, not much more than 25 miles north and snow-free, was measuring 21 degrees. Precipitation... For today, The conglomerate region of height falls slowly organizes as the upper low in the Pacific NW races rapidly eastward. By 00z Tue, models in good agreement with consolidating to a single sfc low which should be entering western Kansas at that time. Prior to consolidation, a northern cyclone, picked up on the 950mb height field, will be positioned over northwestern Nebraska. Attendant to this low, will be a very weak boundary that extends eastward and more or less drapes along the Iowa Minnesota border. With this cyclonic feature weakening throughout the day, the boundary never becomes very well-established, with minimal low-level frontogenetical forcing. Forecast soundings show cloud thicknesses of 4000 to 5000ft, which is sufficient for drizzle. Sfc dewpoint depressions are around 10 degrees, which is not great. Dry air continues from the sfc to around 2000ft. So in all, have flurries/drizzle/sprinkles going today, with transition to more measurable precip towards tonight. Temperatures... 850mb temperatures go from -8C to -12C at 12z yesterday, to around -3C to -7C at 12z today. Satellite imagery picking up on blanket of mid-level clouds currently over Nebraska that will rapidly begin to cover Iowa through this morning. So although WAA in place this afternoon, temperatures will only be around 5 or so degrees warmer today than yesterday. These temperatures are around 15 to 20 degrees below normal for this time of year. .LONG TERM.../Tonight through Sunday/ Issued at 409 AM CDT Mon Apr 2 2018 A potent PV anomaly that is just moving into the Pacific Northwest early this morning, will race over the next 24 hrs and be over Nebraska by 12z Tue. The surface low that will develop today over eastern Colorado in response to the upper level system, will move east across Kansas overnight. This low along with a large high pressure system along the Atlantic coast will lead to good southerly flow off the Gulf. The flow will lift a moisture plume north with some of this moisture overrunning into Iowa. The initial result is the potential for fog developing south, especially in the vicinity of Sunday's snow and possibly some drizzle as low level profiles saturate as the plume lifts north. The latest road forecasts suggest road temperatures will remain at 32 or above for much of the area though can not rule out a few icy patches on bridges over mainly far northern Iowa. The precipitation should begin to switch to snow over northern Iowa by 06z and should have a good band of snow develop over northwest Iowa into southern Minnesota during this time as the mid level forcing arrives. One inch plus per hour rates are possible during this time. The forcing weakens during the afternoon however modest vertical ascent will continue through a descending dendritic growth zone as cold advection arrives. Additional accumulations are expected after 18z before ending by the evening. Snowfall amounts of 4-7 inches are expected generally north of Highway 3 and higher amounts are possible near the Minnesota border. Snowfall amounts of 2-3 inches may extend as far south as Highway 20. Wind gusts by the afternoon should be strong as the cold advection increase and the strongest pressure gradient is in place. Mixed layer winds of 35 to 40 kts are common and certainly gusts over 40 mph at the surface are possible. These gusts will create areas of blowing snow and will cause some travel concerns despite road temperatures near 32. Do not expect Blizzard conditions with the strongest winds disconnected from the peak period of snow but will need to continue to monitor the situation. At this time will be issuing a Winter Storm Watch for far northern Iowa for the snow and blowing snow potential. South of Highway 20, some snow accumulations may occur however it should be lower impact and mostly occurring during the day with some solar radiation penetrating the clouds and warmer road temps, should keep roadways in good shape. A few thunderstorms may clip the far southeast on Tuesday. This area is in the SPC Marginal Convective Outlook with the biggest threat being marginal severe sized hail. The cold advection will sweep across the entire area by late Tuesday into Tuesday night. Low temperatures in the single digits are forecast by Wednesday morning. Record low temperatures could be in jeopardy over the north. The current forecast low at Mason City is 9 degrees, which would tie the current record last set in 1995. Wind chill values over northern Iowa may dip into the minus 5 to minus 10 degree range! The forecast remains generally cold through the extended. Thursday is currently being advertised as the warmest day with some low 50s reaching southern Iowa. Both the ECMWF and the GFS are not dropping a strong cold front into Iowa by the afternoon so any highs will likely be around noon or before. The cold weather generally continues through the weekend. Maybe a glimmer of hope into next week as a large upper low drops into the Gulf of Alaska. This system would force ridging to the east and finally dislodge the Hudson Bay low and allowing warmer temperatures to finally arrive. && .AVIATION.../For the 12Z TAFS through 12Z Tuesday morning/ Issued at 636 AM CDT Mon Apr 2 2018 TAFs start today in VFR conditions, deteriorate throughout this morning and afternoon, and finish the day in IFR or LIFR. CIGs will be the main driver in lowering categories. Low stratus spreading across the CWA from south to north. Wintry precip will be arriving late in the period. This will need to be fine-tuned as tonight approaches. Breezy winds nearing 15 kts expected this afternoon and will diminish this evening. Another day of very strong winds, in the 20 to 30 kt range is expected by late Tuesday afternoon, with wind increases expected after 12z Tue from west to east. && .DMX WATCHES/WARNINGS/ADVISORIES... Winter Storm Watch from late tonight through Tuesday evening for IAZ004>007-015>017. && SHORT TERM...Kotenberg LONG TERM...Donavon AVIATION...Kotenberg
Hazardous weather outlook, Apr 2, 4:42 AM CDT, 9 hours 18 minutes before
Hazardous Weather Outlook National Weather Service Des Moines IA 442 AM CDT Mon Apr 2 2018 IAZ004>007-015>017-030945- Emmet-Kossuth-Winnebago-Worth-Palo Alto-Hancock-Cerro Gordo- 442 AM CDT Mon Apr 2 2018 This Hazardous Weather Outlook is for portions of central Iowa. .DAY ONE...Today and tonight A Winter Storm Watch is in effect for the area for late tonight through Tuesday evening. Please refer to the National Weather Service website at weather.gov/desmoines for further details. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday A Winter Storm Watch is in effect for the area for late tonight through Tuesday evening. Please refer to the National Weather Service website at weather.gov/desmoines for further details. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time however winter weather reports would be appreciated. IAZ023>028-033>039-030945- Pocahontas-Humboldt-Wright-Franklin-Butler-Bremer-Sac-Calhoun- Webster-Hamilton-Hardin-Grundy-Black Hawk- 442 AM CDT Mon Apr 2 2018 This Hazardous Weather Outlook is for portions of central Iowa. .DAY ONE...Today and tonight A wintry mix or light snow may develop late tonight and could create some icy patches. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday Light snow or a wintry mix are expected on Tuesday with accumulations of snow possible. Gusty northwest winds will develop through the day with gusts over 40 mph possible. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time however winter weather reports would be appreciated. IAZ044>050-057>062-030945- Crawford-Carroll-Greene-Boone-Story-Marshall-Tama-Audubon-Guthrie- Dallas-Polk-Jasper-Poweshiek- 442 AM CDT Mon Apr 2 2018 This Hazardous Weather Outlook is for portions of central Iowa. .DAY ONE...Today and tonight Patchy fog and areas of drizzle may occur late tonight. A few icy patches could occur on bridges where temperatures are near freezing. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday Minor snow accumulations are possible on Tuesday though should have little impact on travel. Gusty northwest winds will develop through the day with gusts over 40 mph possible. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. IAZ070>075-081>086-092>097-030945- Cass-Adair-Madison-Warren-Marion-Mahaska-Adams-Union-Clarke-Lucas- Monroe-Wapello-Taylor-Ringgold-Decatur-Wayne-Appanoose-Davis- 442 AM CDT Mon Apr 2 2018 This Hazardous Weather Outlook is for portions of central Iowa. .DAY ONE...Today and tonight Areas of fog are possible tonight and may become locally dense near the Missouri border. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday Isolated thunderstorms are possible Tuesday morning mainly across the southeast. Dime to nickel sized hail could occur with a few storms. Gusty northwest winds will develop on Tuesday with gusts over 40 mph possible during the afternoon. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time.
The office that day
Everything else NWS Des Moines, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 2, 4:16 AM CDT | Winter Storm Watch | DMX | Cerro Gordo, Emmet, Hancock, Kossuth, Palo Alto, Winnebago and 1 more | 10 hr |
| Apr 2, 2:00 PM CDT | Winter Weather Advisory | DMX | Adair, Audubon, Black Hawk, Boone, Bremer, Butler and 22 more | 35 hr |
Nearby
Winter Storm Warnings in Iowa, 2018Every winter storm warning in 2018
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.