Alert archive / Iowa / Wind Advisories in 2021
Wind Advisory 7, NWS Des Moines, IA
NWS Des Moines, IA issued this wind advisory at Nov 11, 2021, 2:52 AM CST for 25 counties in Iowa. It took effect at Nov 11, 2021, 9:00 PM CST. It was in force for 21 hr.
The area
The counties it named.
The facts
- Issued
- Nov 11, 2021, 2:52 AM CST (08:52 UTC)
- In effect from
- Nov 11, 2021, 9:00 PM CST
- Expired
- Nov 12, 2021, 6:00 PM CST
- In force
- 21 hr
- Issued by
- NWS Des Moines, IA
All 25 counties
Adair County, IA, Audubon County, IA, Boone County, IA, Calhoun County, IA, Carroll County, IA, Cass County, IA, Crawford County, IA, Dallas County, IA, Emmet County, IA, Franklin County, IA, Greene County, IA, Guthrie County, IA, Hamilton County, IA, Hardin County, IA, Humboldt County, IA, Kossuth County, IA, Madison County, IA, Palo Alto County, IA, Pocahontas County, IA, Polk County, IA, Sac County, IA, Story County, IA, Warren County, IA, Webster County, IA, Wright County, IA
The radar
The Des Moines radar (KDMX), 68 km from the middle of the area, began a volume at 08:55 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, 8.9 hours before the alert went out and 201 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
- 503 m above ground
- 0-6 km bulk shear
- 41 kt
- 0-1 km storm-relative helicity
- -79 m²/s²
- 0-3 km storm-relative helicity
- 43 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
626 WWUS73 KDMX 110852 NPWDMX URGENT - WEATHER MESSAGE National Weather Service Des Moines IA 252 AM CST Thu Nov 11 2021 IAZ023-024-033>035-044-045-111700- /O.NEW.KDMX.WI.Y.0007.211112T0600Z-211112T2100Z/ Pocahontas-Humboldt-Sac-Calhoun-Webster-Crawford-Carroll- Including the cities of Pocahontas, Laurens, Rolfe, Fonda, Gilmore City, Humboldt, Sac City, Lake View, Odebolt, Wall Lake, Schaller, Early, Rockwell City, Manson, Lake City, Pomeroy, Fort Dodge, Denison, and Carroll 252 AM CST Thu Nov 11 2021 ...WIND ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 3 PM CST FRIDAY... * WHAT...West winds 20 to 30 mph with gusts up to 45 mph expected. * WHERE...Portions of Western and Central Iowa * WHEN...From midnight tonight to 3 PM CST Friday. * IMPACTS...Gusty winds could blow around unsecured objects. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$ For more information from the National Weather Service visit https://weather.gov/desmoines
7 follow-up statements
338 WWUS73 KDMX 111449 NPWDMX URGENT - WEATHER MESSAGE National Weather Service Des Moines IA 849 AM CST Thu Nov 11 2021 IAZ023-024-033>035-044-045-112300- /O.CON.KDMX.WI.Y.0007.211112T0600Z-211112T2100Z/ Pocahontas-Humboldt-Sac-Calhoun-Webster-Crawford-Carroll- Including the cities of Pocahontas, Laurens, Rolfe, Fonda, Gilmore City, Humboldt, Sac City, Lake View, Odebolt, Wall Lake, Schaller, Early, Rockwell City, Manson, Lake City, Pomeroy, Fort Dodge, Denison, and Carroll 849 AM CST Thu Nov 11 2021 ...WIND ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 3 PM CST FRIDAY... * WHAT...West winds 20 to 30 mph with gusts up to 45 mph expected. * WHERE...Portions of Western and Central Iowa. * WHEN...From midnight tonight to 3 PM CST Friday. * IMPACTS...Gusty winds could blow around unsecured objects. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$ For more information from the National Weather Service visit https://weather.gov/desmoines
585 WWUS73 KDMX 112059 NPWDMX URGENT - WEATHER MESSAGE National Weather Service Des Moines IA 259 PM CST Thu Nov 11 2021 IAZ036-037-046>048-057>060-070>073-120500- /O.EXB.KDMX.WI.Y.0007.211112T0300Z-211113T0000Z/ Hamilton-Hardin-Greene-Boone-Story-Audubon-Guthrie-Dallas-Polk- Cass-Adair-Madison-Warren- Including the cities of Webster City, Iowa Falls, Eldora, Ackley, Jefferson, Boone, Ames, Audubon, Exira, Guthrie Center, Panora, Bayard, Casey, Perry, Waukee, Adel, Des Moines, Atlantic, Greenfield, Stuart, Adair, Fontanelle, Winterset, Earlham, Indianola, Norwalk, and Carlisle 259 PM CST Thu Nov 11 2021 ...WIND ADVISORY IN EFFECT FROM 9 PM THIS EVENING TO 6 PM CST FRIDAY... * WHAT...West to northwest winds 25 to 35 mph with gusts up to 50 mph expected. * WHERE...Portions of Western and Central Iowa. * WHEN...From 9 PM this evening to 6 PM CST Friday. * IMPACTS...Gusty winds could blow around unsecured objects. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$ IAZ023-024-033>035-044-045-120500- /O.EXT.KDMX.WI.Y.0007.211112T0300Z-211113T0000Z/ Pocahontas-Humboldt-Sac-Calhoun-Webster-Crawford-Carroll- Including the cities of Pocahontas, Laurens, Rolfe, Fonda, Gilmore City, Humboldt, Sac City, Lake View, Odebolt, Wall Lake, Schaller, Early, Rockwell City, Manson, Lake City, Pomeroy, Fort Dodge, Denison, and Carroll 259 PM CST Thu Nov 11 2021 ...WIND ADVISORY NOW IN EFFECT FROM 9 PM THIS EVENING TO 6 PM CST FRIDAY... * WHAT...West to northwest winds 25 to 35 mph with gusts in excess of 50 mph expected. * WHERE...Portions of Western and Central Iowa. * WHEN...From 9 PM this evening to 6 PM CST Friday. * IMPACTS...Gusty winds could blow around unsecured objects. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$ For more information from the National Weather Service visit https://weather.gov/desmoines
710 WWUS73 KDMX 120322 NPWDMX URGENT - WEATHER MESSAGE National Weather Service Des Moines IA 922 PM CST Thu Nov 11 2021 IAZ023-024-033>037-044>048-057>060-070>073-121130- /O.CON.KDMX.WI.Y.0007.000000T0000Z-211113T0000Z/ Pocahontas-Humboldt-Sac-Calhoun-Webster-Hamilton-Hardin-Crawford- Carroll-Greene-Boone-Story-Audubon-Guthrie-Dallas-Polk-Cass-Adair- Madison-Warren- Including the cities of Pocahontas, Laurens, Rolfe, Fonda, Gilmore City, Humboldt, Sac City, Lake View, Odebolt, Wall Lake, Schaller, Early, Rockwell City, Manson, Lake City, Pomeroy, Fort Dodge, Webster City, Iowa Falls, Eldora, Ackley, Denison, Carroll, Jefferson, Boone, Ames, Audubon, Exira, Guthrie Center, Panora, Bayard, Casey, Perry, Waukee, Adel, Des Moines, Atlantic, Greenfield, Stuart, Adair, Fontanelle, Winterset, Earlham, Indianola, Norwalk, and Carlisle 922 PM CST Thu Nov 11 2021 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 6 PM CST FRIDAY... * WHAT...West to northwest winds 25 to 35 mph with gusts to around 50 mph expected. * WHERE...Portions of Western and Central Iowa. * WHEN...From 9 PM this evening to 6 PM CST Friday. * IMPACTS...Gusty winds could blow around unsecured objects. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$ For more information from the National Weather Service visit https://weather.gov/desmoines
467 WWUS73 KDMX 120925 NPWDMX URGENT - WEATHER MESSAGE National Weather Service Des Moines IA 325 AM CST Fri Nov 12 2021 IAZ023-024-033>037-044>048-057>060-070>073-121730- /O.CON.KDMX.WI.Y.0007.000000T0000Z-211113T0000Z/ Pocahontas-Humboldt-Sac-Calhoun-Webster-Hamilton-Hardin-Crawford- Carroll-Greene-Boone-Story-Audubon-Guthrie-Dallas-Polk-Cass-Adair- Madison-Warren- Including the cities of Pocahontas, Laurens, Rolfe, Fonda, Gilmore City, Humboldt, Sac City, Lake View, Odebolt, Wall Lake, Schaller, Early, Rockwell City, Manson, Lake City, Pomeroy, Fort Dodge, Webster City, Iowa Falls, Eldora, Ackley, Denison, Carroll, Jefferson, Boone, Ames, Audubon, Exira, Guthrie Center, Panora, Bayard, Casey, Perry, Waukee, Adel, Des Moines, Atlantic, Greenfield, Stuart, Adair, Fontanelle, Winterset, Earlham, Indianola, Norwalk, and Carlisle 325 AM CST Fri Nov 12 2021 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 6 PM CST THIS EVENING... * WHAT...West to northwest winds 25 to 35 mph with gusts to around 50 mph expected. * WHERE...Portions of Western and Central Iowa. * WHEN...Until 6 PM CST this evening. * IMPACTS...Gusty winds could blow around unsecured objects. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$ For more information from the National Weather Service visit https://weather.gov/desmoines
430 WWUS73 KDMX 121627 NPWDMX URGENT - WEATHER MESSAGE National Weather Service Des Moines IA 1027 AM CST Fri Nov 12 2021 IAZ023-024-033>037-044>048-057>060-070>073-130000- /O.CON.KDMX.WI.Y.0007.000000T0000Z-211113T0000Z/ Pocahontas-Humboldt-Sac-Calhoun-Webster-Hamilton-Hardin-Crawford- Carroll-Greene-Boone-Story-Audubon-Guthrie-Dallas-Polk-Cass-Adair- Madison-Warren- Including the cities of Pocahontas, Laurens, Rolfe, Fonda, Gilmore City, Humboldt, Sac City, Lake View, Odebolt, Wall Lake, Schaller, Early, Rockwell City, Manson, Lake City, Pomeroy, Fort Dodge, Webster City, Iowa Falls, Eldora, Ackley, Denison, Carroll, Jefferson, Boone, Ames, Audubon, Exira, Guthrie Center, Panora, Bayard, Casey, Perry, Waukee, Adel, Des Moines, Atlantic, Greenfield, Stuart, Adair, Fontanelle, Winterset, Earlham, Indianola, Norwalk, and Carlisle 1027 AM CST Fri Nov 12 2021 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 6 PM CST THIS EVENING... * WHAT...West to northwest winds 25 to 35 mph with gusts up to around 50 mph possible. * WHERE...Portions of Western and Central Iowa. * WHEN...Until 6 PM CST this evening. * IMPACTS...Gusty winds could blow around unsecured objects. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$ For more information from the National Weather Service visit https://weather.gov/desmoines
203 WWUS73 KDMX 121845 NPWDMX URGENT - WEATHER MESSAGE National Weather Service Des Moines IA 1245 PM CST Fri Nov 12 2021 IAZ004-005-015-025-026-130000- /O.EXA.KDMX.WI.Y.0007.000000T0000Z-211113T0000Z/ Emmet-Kossuth-Palo Alto-Wright-Franklin- Including the cities of Estherville, Algona, Emmetsburg, Eagle Grove, Clarion, Belmond, and Hampton 1245 PM CST Fri Nov 12 2021 ...WIND ADVISORY IN EFFECT UNTIL 6 PM CST THIS EVENING... * WHAT...Northwest winds 25 to 30 mph with gusts up to 45 mph. * WHERE...Northern and Northwest Iowa. * WHEN...Until 6 PM CST this evening. * IMPACTS...Gusty winds could blow around unsecured objects and cause hazardous travel conditions. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$ IAZ023-024-033>037-044>048-057>060-070>073-130000- /O.CON.KDMX.WI.Y.0007.000000T0000Z-211113T0000Z/ Pocahontas-Humboldt-Sac-Calhoun-Webster-Hamilton-Hardin-Crawford- Carroll-Greene-Boone-Story-Audubon-Guthrie-Dallas-Polk-Cass-Adair- Madison-Warren- Including the cities of Pocahontas, Laurens, Rolfe, Fonda, Gilmore City, Humboldt, Sac City, Lake View, Odebolt, Wall Lake, Schaller, Early, Rockwell City, Manson, Lake City, Pomeroy, Fort Dodge, Webster City, Iowa Falls, Eldora, Ackley, Denison, Carroll, Jefferson, Boone, Ames, Audubon, Exira, Guthrie Center, Panora, Bayard, Casey, Perry, Waukee, Adel, Des Moines, Atlantic, Greenfield, Stuart, Adair, Fontanelle, Winterset, Earlham, Indianola, Norwalk, and Carlisle 1245 PM CST Fri Nov 12 2021 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 6 PM CST THIS EVENING... * WHAT...West to northwest winds 25 to 35 mph with gusts up to around 50 mph possible, especially west. * WHERE...Portions of Western and Central Iowa. * WHEN...Until 6 PM CST this evening. * IMPACTS...Gusty winds could blow around unsecured objects and cause hazardous travel conditions. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$ For more information from the National Weather Service visit https://weather.gov/desmoines
275 WWUS73 KDMX 130015 NPWDMX URGENT - WEATHER MESSAGE National Weather Service Des Moines IA 615 PM CST Fri Nov 12 2021 IAZ004-005-015-023>026-033>037-044>048-057>060-070>073-130115- /O.EXP.KDMX.WI.Y.0007.000000T0000Z-211113T0000Z/ Emmet-Kossuth-Palo Alto-Pocahontas-Humboldt-Wright-Franklin-Sac- Calhoun-Webster-Hamilton-Hardin-Crawford-Carroll-Greene-Boone- Story-Audubon-Guthrie-Dallas-Polk-Cass-Adair-Madison-Warren- Including the cities of Estherville, Algona, Emmetsburg, Pocahontas, Laurens, Rolfe, Fonda, Gilmore City, Humboldt, Eagle Grove, Clarion, Belmond, Hampton, Sac City, Lake View, Odebolt, Wall Lake, Schaller, Early, Rockwell City, Manson, Lake City, Pomeroy, Fort Dodge, Webster City, Iowa Falls, Eldora, Ackley, Denison, Carroll, Jefferson, Boone, Ames, Audubon, Exira, Guthrie Center, Panora, Bayard, Casey, Perry, Waukee, Adel, Des Moines, Atlantic, Greenfield, Stuart, Adair, Fontanelle, Winterset, Earlham, Indianola, Norwalk, and Carlisle 615 PM CST Fri Nov 12 2021 ...WIND ADVISORY HAS EXPIRED... Winds have decreased below advisory levels and will continue to diminish throughout the evening. $$ For more information from the National Weather Service visit https://weather.gov/desmoines Hagenhoff
The office that day
Everything else NWS Des Moines, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Nov 11, 2:50 AM CST | Winter Weather Advisory | DMX | Cerro Gordo, Emmet, Franklin, Hancock, Kossuth, Palo Alto and 3 more | 34 hr |
Nearby
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.