Alert archive / Iowa / Wind Advisories in 2020
Wind Advisory 3, NWS La Crosse, WI
NWS La Crosse, WI issued this wind advisory at Apr 9, 2020, 2:46 AM CDT for 4 counties in Iowa. It took effect at Apr 9, 2020, 10:00 AM CDT. It was in force for 9 hr.
The area
The counties it named.
The facts
- Issued
- Apr 9, 2020, 2:46 AM CDT (07:46 UTC)
- In effect from
- Apr 9, 2020, 10:00 AM CDT
- Expired
- Apr 9, 2020, 7:00 PM CDT
- In force
- 9 hr
- Issued by
- NWS La Crosse, WI
Counties Chickasaw County, IA, Clayton County, IA, Fayette County, IA, Floyd County, IA
The radar
The La Crosse radar (KARX), 120 km from the middle of the area, began a volume at 07:48 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, 7.8 hours before the alert went out and 197 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
- 968 m above ground
- 0-6 km bulk shear
- 76 kt
- 0-1 km storm-relative helicity
- -368 m²/s²
- 0-3 km storm-relative helicity
- -253 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
361 WWUS73 KARX 090746 NPWARX URGENT - WEATHER MESSAGE National Weather Service La Crosse WI 246 AM CDT Thu Apr 9 2020 IAZ018-019-029-030-091600- /O.NEW.KARX.WI.Y.0003.200409T1500Z-200410T0000Z/ Floyd-Chickasaw-Fayette-Clayton- Including the cities of Charles City, New Hampton, Oelwein, and Elkader 246 AM CDT Thu Apr 9 2020 ...WIND ADVISORY IN EFFECT FROM 10 AM THIS MORNING TO 7 PM CDT THIS EVENING... * WHAT...Northwest winds 25 to 30 mph with gusts around 40 mph expected. * WHERE...Floyd, Chickasaw, Fayette and Clayton Counties. * WHEN...From 10 AM this morning to 7 PM CDT this evening. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$ DAS
2 follow-up statements
061 WWUS73 KARX 091617 NPWARX URGENT - WEATHER MESSAGE National Weather Service La Crosse WI 1117 AM CDT Thu Apr 9 2020 IAZ018-019-029-030-100000- /O.CON.KARX.WI.Y.0003.000000T0000Z-200410T0000Z/ Floyd-Chickasaw-Fayette-Clayton- Including the cities of Charles City, New Hampton, Oelwein, and Elkader 1117 AM CDT Thu Apr 9 2020 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 7 PM CDT THIS EVENING... * WHAT...Northwest winds 25 to 30 mph with gusts around 40 mph expected. * WHERE...Floyd, Chickasaw, Fayette and Clayton Counties. * WHEN...Until 7 PM CDT this evening. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$ 04
922 WWUS73 KARX 092338 NPWARX URGENT - WEATHER MESSAGE National Weather Service La Crosse WI 638 PM CDT Thu Apr 9 2020 IAZ018-019-029-030-100045- /O.EXP.KARX.WI.Y.0003.000000T0000Z-200410T0000Z/ Floyd-Chickasaw-Fayette-Clayton- Including the cities of Charles City, New Hampton, Oelwein, and Elkader 638 PM CDT Thu Apr 9 2020 ...WIND ADVISORY WILL EXPIRE AT 7 PM CDT THIS EVENING... Winds are on the decrease and will continue to drop off through the mid evening hours. Therefore the wind advisory will be allowed to expire. $$ Rieck
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.