Alert archive / Iowa / Special Weather Statements in 2017
Special Weather Statement, NWS La Crosse, WI
NWS La Crosse, WI issued this special weather statement at Jul 10, 2017, 12:49 AM CDT for Chickasaw County, Iowa. It was in force for 26 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Jul 10, 2017, 12:49 AM CDT (05:49 UTC)
- Expired
- Jul 10, 2017, 1:15 AM CDT
- In force
- 26 min
- Issued by
- NWS La Crosse, WI
County Chickasaw County, IA
The radar
The La Crosse radar (KARX), 131 km from the middle of the area, began a volume at 05:49 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, 5.8 hours before the alert went out and 217 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
- 475 J/kg
- Mixed-layer CIN
- -89 J/kg
- Mixed-layer LCL
- 1980 m above ground
- 0-6 km bulk shear
- 18 kt
- 0-1 km storm-relative helicity
- 37 m²/s²
- 0-3 km storm-relative helicity
- 157 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
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</html>What forecasters said that day
The local office's own words before this special weather statement went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS La Crosse, WI wrote its last area forecast discussion before this special weather statement went out at Jul 10, 12:15 AM CDT, 34 minutes earlier.
Area forecast discussion, Jul 10, 12:15 AM CDT, 34 minutes before
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</html>Hazardous weather outlook, Jul 9, 12:39 PM CDT, 12 hours 10 minutes before
Hazardous Weather Outlook National Weather Service La Crosse WI 1239 PM CDT Sun Jul 9 2017 IAZ008>011-018-019-029-030-MNZ079-086>088-094>096-WIZ017-029- 032>034-041>044-053>055-061-101100- Mitchell-Howard-Winneshiek-Allamakee-Floyd-Chickasaw-Fayette- Clayton-Wabasha-Dodge-Olmsted-Winona-Mower-Fillmore-Houston- Taylor-Clark-Buffalo-Trempealeau-Jackson-La Crosse-Monroe-Juneau- Adams-Vernon-Crawford-Richland-Grant- 1239 PM CDT Sun Jul 9 2017 This Hazardous Weather Outlook is for portions of southeast Minnesota, northeast Iowa, and southwest into central Wisconsin. .DAY ONE...This afternoon and Tonight Scattered thunderstorms are possible this afternoon, mainly across Wisconsin. Severe weather is not expected. Another round of storms will occur tonight, some of which are expected to be severe. Damaging winds, heavy rain and hail are the threats. Timing for the severe storms looks to be after 9 pm, continuing into the overnight hours. The higher chances for the severe storms will be southwest of Interstate 94. .DAYS TWO THROUGH SEVEN...Monday through Saturday Another round of severe storms could occur late Tuesday afternoon and Tuesday night. Damaging winds, hail and heavy rain will be the main threats. There will be periodic thunderstorm chances into next weekend. It is too early to discern any severe threats. .SPOTTER INFORMATION STATEMENT... Spotter activation will be possible for late this evening into the overnight hours. Rainfall reports are appreciated. .EMERGENCY MANAGEMENT COORDINATION... No webinar is scheduled. 04/JM
In the hours before
Special weather statement, Jul 9, 10:36 PM CDT, 2 hours 13 minutes before
Special Weather Statement National Weather Service La Crosse WI 1036 PM CDT Sun Jul 9 2017 IAZ008-009-MNZ079-086>088-094>096-WIZ032>034-041>044-053-100500- Mitchell-Howard-Wabasha-Dodge-Olmsted-Winona-Mower-Fillmore- Houston-Buffalo-Trempealeau-Jackson-La Crosse-Monroe-Juneau-Adams- Vernon- Including the cities of Osage, Cresco, Wabasha, Dodge Center, Rochester, Winona, Austin, Preston, Caledonia, Alma, Arcadia, Whitehall, Black River Falls, La Crosse, Sparta, Tomah, Mauston, Friendship, and Viroqua 1036 PM CDT Sun Jul 9 2017 ...Strong Storms Moving In... Thunderstorms will continue to spread across southeast Minnesota and portions of western Wisconsin through midnight. Some of the storms will be strong producing very heavy rainfall, wind gusts to 30 mph, and hail to 1/2 inch. A few storms could become severe with a large hail and damaging wind threat. If you have outdoor plans this evening, be prepared to take shelter inside as these storms approach.
Local storm report, Jul 9, 11:05 PM CDT, 1 hour 44 minutes before
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</html>Local storm report, Jul 9, 11:19 PM CDT, 1 hour 30 minutes before
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</html>Special weather statement, Jul 10, 12:05 AM CDT, 44 minutes before
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</html>Special weather statement, Jul 10, 12:31 AM CDT, 18 minutes before
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</html>Special weather statement, Jul 10, 12:49 AM CDT, 0 minutes before
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</html>The office that day
Everything else NWS La Crosse, WI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 9, 10:47 PM CDT | Severe Thunderstorm Warning | ARX | Monroe | 43 min |
| Jul 10, 12:05 AM CDT | Special Weather Statement | ARX | Mitchell | 25 min |
| Jul 10, 12:31 AM CDT | Special Weather Statement | ARX | Howard | 29 min |
Nearby
Special Weather Statements in Iowa, 2017Every special weather statement in 2017
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.