Alert archive / Iowa / Wind Advisories in 2020
Wind Advisory 13, NWS Des Moines, IA
NWS Des Moines, IA issued this wind advisory at Oct 17, 2020, 3:23 AM CDT for 10 counties in Iowa. It took effect at Oct 17, 2020, 11:00 AM CDT. It was in force for 4 hr.
The area
The counties it named.
The facts
- Issued
- Oct 17, 2020, 3:23 AM CDT (08:23 UTC)
- In effect from
- Oct 17, 2020, 11:00 AM CDT
- Expired
- Oct 17, 2020, 3:00 PM CDT
- In force
- 4 hr
- Issued by
- NWS Des Moines, IA
Counties Appanoose County, IA, Davis County, IA, Decatur County, IA, Lucas County, IA, Mahaska County, IA, Marion County, IA, Monroe County, IA, Poweshiek County, IA, Wapello County, IA, Wayne County, IA
The radar
The Des Moines radar (KDMX), 101 km from the middle of the area, began a volume at 08:22 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
Davenport, (KDVN), launched 00:00Z, 8.4 hours before the alert went out and 213 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
- 2061 m above ground
- 0-6 km bulk shear
- 78 kt
- 0-1 km storm-relative helicity
- 80 m²/s²
- 0-3 km storm-relative helicity
- 100 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
878 WWUS73 KDMX 170823 NPWDMX URGENT - WEATHER MESSAGE National Weather Service Des Moines IA 323 AM CDT Sat Oct 17 2020 IAZ085-086-095>097-171700- /O.NEW.KDMX.WI.Y.0013.201017T1600Z-201017T2000Z/ Monroe-Wapello-Wayne-Appanoose-Davis- Including the cities of Albia, Ottumwa, Corydon, Seymour, Allerton, Humeston, Centerville, and Bloomfield 323 AM CDT Sat Oct 17 2020 ...WIND ADVISORY IN EFFECT FROM 11 AM THIS MORNING TO 3 PM CDT THIS AFTERNOON... * WHAT...Southwest winds around 25 mph with gusts up to 45 mph expected. * WHERE...Portions of southeast Iowa. * WHEN...From 11 AM this morning to 3 PM CDT this afternoon. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. * ADDITIONAL DETAILS...These strong winds, combined with warm temperatures and fairly low relative humidities, will also produce an elevated fire danger today. Any fires that ignite could spread quickly. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. Burning is not recommended. && $$ For more information from the National Weather Service visit https://weather.gov/desmoines BSS
2 follow-up statements
349 WWUS73 KDMX 171400 NPWDMX URGENT - WEATHER MESSAGE National Weather Service Des Moines IA 900 AM CDT Sat Oct 17 2020 IAZ062-074-075-084-094-172000- /O.EXA.KDMX.WI.Y.0013.201017T1600Z-201017T2000Z/ Poweshiek-Marion-Mahaska-Lucas-Decatur- Including the cities of Grinnell, Pella, Knoxville, Oskaloosa, Chariton, Lamoni, and Leon 900 AM CDT Sat Oct 17 2020 ...WIND ADVISORY IN EFFECT UNTIL 3 PM CDT THIS AFTERNOON... * WHAT...Southwest winds 25 to 30 mph with gusts up to 45. * WHERE...Much of Southeast Iowa. * WHEN...From 11 AM this morning to 3 PM CDT this afternoon. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. * ADDITIONAL DETAILS...These strong winds, combined with warm temperatures and fairly low relative humidities, will also produce an elevated fire danger today. Any fires that ignite could spread quickly. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$ IAZ085-086-095>097-172000- /O.CON.KDMX.WI.Y.0013.201017T1600Z-201017T2000Z/ Monroe-Wapello-Wayne-Appanoose-Davis- Including the cities of Albia, Ottumwa, Corydon, Seymour, Allerton, Humeston, Centerville, and Bloomfield 900 AM CDT Sat Oct 17 2020 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 3 PM CDT THIS AFTERNOON... * WHAT...Southwest winds 25 to 30 mph with gusts up to 45 to 50 mph. * WHERE...Much of southeast Iowa. * WHEN...From 11 AM this morning to 3 PM CDT this afternoon. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. * ADDITIONAL DETAILS...These strong winds, combined with warm temperatures and fairly low relative humidities, will also produce an elevated fire danger today. Any fires that ignite could spread quickly. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$ CURTIS For more information from the National Weather Service visit https://weather.gov/desmoines
025 WWUS73 KDMX 172001 NPWDMX URGENT - WEATHER MESSAGE National Weather Service Des Moines IA 301 PM CDT Sat Oct 17 2020 IAZ062-074-075-084>086-094>097-172115- /O.EXP.KDMX.WI.Y.0013.000000T0000Z-201017T2000Z/ Poweshiek-Marion-Mahaska-Lucas-Monroe-Wapello-Decatur-Wayne- Appanoose-Davis- Including the cities of Grinnell, Pella, Knoxville, Oskaloosa, Chariton, Albia, Ottumwa, Lamoni, Leon, Corydon, Seymour, Allerton, Humeston, Centerville, and Bloomfield 301 PM CDT Sat Oct 17 2020 ...WIND ADVISORY WILL EXPIRE AT 3 PM CDT THIS AFTERNOON... Winds have remained just below advisory criteria this afternoon and gusty winds will continue to subside into the evening, so the wind advisory will be allowed to expire. $$ For more information from the National Weather Service visit https://weather.gov/desmoines KCM
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.