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Home Return to list Dense Fog Advisory 0010 Issued by the La Crosse Forecast Office
Action: New Issued At: 2026-08-07 03:21:23 457 WWUS73 KARX 070820 NPWARX URGENT - WEATHER MESSAGE National Weather Service La Crosse WI 320 AM CDT Fri Aug 7 2026 IAZ029-030-071400- /O.NEW.KARX.FG.Y.0010.260807T0820Z-260807T1400Z/ Fayette-Clayton- Including the cities of Oelwein and Elkader 320 AM CDT Fri Aug 7 2026 ...DENSE FOG ADVISORY IN EFFECT UNTIL 9 AM CDT THIS MORNING... * WHAT...Visibility 1/4 mile or less in dense fog. * WHERE...Clayton and Fayette Counties. * WHEN...Until 9 AM CDT this morning. * IMPACTS...Low visibility could make driving conditions hazardous. PRECAUTIONARY/PREPAREDNESS ACTIONS... If driving, slow down, use your headlights, and leave plenty of distance ahead of you. && $$ JAR Action: Area Extended Issued At: 2026-08-07 04:50:05 811 WWUS73 KARX 070949 NPWARX URGENT - WEATHER MESSAGE National Weather Service La Crosse WI 449 AM CDT Fri Aug 7 2026 IAZ009>011-019-071400- /O.EXA.KARX.FG.Y.0010.000000T0000Z-260807T1400Z/ Howard-Winneshiek-Allamakee-Chickasaw- Including the cities of Waukon, Cresco, Decorah, and New Hampton 449 AM CDT Fri Aug 7 2026 ...DENSE FOG ADVISORY IN EFFECT UNTIL 9 AM CDT THIS MORNING... * WHAT...Visibility 1/4 mile or less in dense fog. * WHERE...Allamakee, Chickasaw, Howard, and Winneshiek Counties. * WHEN...Until 9 AM CDT this morning. * IMPACTS...Low visibility could make driving conditions hazardous. PRECAUTIONARY/PREPAREDNESS ACTIONS... If driving, slow down, use your headlights, and leave plenty of distance ahead of you. && $$ IAZ029-030-071400- /O.CON.KARX.FG.Y.0010.000000T0000Z-260807T1400Z/ Fayette-Clayton- Including the cities of Oelwein and Elkader 449 AM CDT Fri Aug 7 2026 ...DENSE FOG ADVISORY REMAINS IN EFFECT UNTIL 9 AM CDT THIS MORNING... * WHAT...Visibility 1/4 mile or less in dense fog. * WHERE...Clayton and Fayette Counties. * WHEN...Until 9 AM CDT this morning. * IMPACTS...Low visibility could make driving conditions hazardous. PRECAUTIONARY/PREPAREDNESS ACTIONS... If driving, slow down, use your headlights, and leave plenty of distance ahead of you. && $$ JAR Action: Continued Issued At: 2026-08-07 04:50:05 811 WWUS73 KARX 070949 NPWARX URGENT - WEATHER MESSAGE National Weather Service La Crosse WI 449 AM CDT Fri Aug 7 2026 IAZ009>011-019-071400- /O.EXA.KARX.FG.Y.0010.000000T0000Z-260807T1400Z/ Howard-Winneshiek-Allamakee-Chickasaw- Including the cities of Waukon, Cresco, Decorah, and New Hampton 449 AM CDT Fri Aug 7 2026 ...DENSE FOG ADVISORY IN EFFECT UNTIL 9 AM CDT THIS MORNING... * WHAT...Visibility 1/4 mile or less in dense fog. * WHERE...Allamakee, Chickasaw, Howard, and Winneshiek Counties. * WHEN...Until 9 AM CDT this morning. * IMPACTS...Low visibility could make driving conditions hazardous. PRECAUTIONARY/PREPAREDNESS ACTIONS... If driving, slow down, use your headlights, and leave plenty of distance ahead of you. && $$ IAZ029-030-071400- /O.CON.KARX.FG.Y.0010.000000T0000Z-260807T1400Z/ Fayette-Clayton- Including the cities of Oelwein and Elkader 449 AM CDT Fri Aug 7 2026 ...DENSE FOG ADVISORY REMAINS IN EFFECT UNTIL 9 AM CDT THIS MORNING... * WHAT...Visibility 1/4 mile or less in dense fog. * WHERE...Clayton and Fayette Counties. * WHEN...Until 9 AM CDT this morning. * IMPACTS...Low visibility could make driving conditions hazardous. PRECAUTIONARY/PREPAREDNESS ACTIONS... If driving, slow down, use your headlights, and leave plenty of distance ahead of you. && $$ JAR Action: Area Extended Issued At: 2026-08-07 05:07:36 267 WWUS73 KARX 071007 NPWARX URGENT - WEATHER MESSAGE National Weather Service La Crosse WI 507 AM CDT Fri Aug 7 2026 MNZ095-096-071400- /O.EXA.KARX.FG.Y.0010.000000T0000Z-260807T1400Z/ Fillmore-Houston- Including the cities of Preston and Caledonia 507 AM CDT Fri Aug 7 2026 ...DENSE FOG ADVISORY IN EFFECT UNTIL 9 AM CDT THIS MORNING... * WHAT...Visibility 1/4 mile or less in dense fog. * WHERE...Fillmore and Houston Counties. * WHEN...Until 9 AM CDT this morning. * IMPACTS...Low visibility could make driving conditions hazardous. PRECAUTIONARY/PREPAREDNESS ACTIONS... If driving, slow down, use your headlights, and leave plenty of distance ahead of you. && $$ IAZ009>011-019-029-030-071400- /O.CON.KARX.FG.Y.0010.000000T0000Z-260807T1400Z/ Howard-Winneshiek-Allamakee-Chickasaw-Fayette-Clayton- Including the cities of Waukon, Cresco, Oelwein, Elkader, New Hampton, and Decorah 507 AM CDT Fri Aug 7 2026 ...DENSE FOG ADVISORY REMAINS IN EFFECT UNTIL 9 AM CDT THIS MORNING... * WHAT...Visibility 1/4 mile or less in dense fog. * WHERE...Allamakee, Chickasaw, Clayton, Fayette, Howard, and Winneshiek Counties. * WHEN...Until 9 AM CDT this morning. * IMPACTS...Low visibility could make driving conditions hazardous. PRECAUTIONARY/PREPAREDNESS ACTIONS... If driving, slow down, use your headlights, and leave plenty of distance ahead of you. && $$ JAR Action: Continued Issued At: 2026-08-07 05:07:36 267 WWUS73 KARX 071007 NPWARX URGENT - WEATHER MESSAGE National Weather Service La Crosse WI 507 AM CDT Fri Aug 7 2026 MNZ095-096-071400- /O.EXA.KARX.FG.Y.0010.000000T0000Z-260807T1400Z/ Fillmore-Houston- Including the cities of Preston and Caledonia 507 AM CDT Fri Aug 7 2026 ...DENSE FOG ADVISORY IN EFFECT UNTIL 9 AM CDT THIS MORNING... * WHAT...Visibility 1/4 mile or less in dense fog. * WHERE...Fillmore and Houston Counties. * WHEN...Until 9 AM CDT this morning. * IMPACTS...Low visibility could make driving conditions hazardous. PRECAUTIONARY/PREPAREDNESS ACTIONS... If driving, slow down, use your headlights, and leave plenty of distance ahead of you. && $$ IAZ009>011-019-029-030-071400- /O.CON.KARX.FG.Y.0010.000000T0000Z-260807T1400Z/ Howard-Winneshiek-Allamakee-Chickasaw-Fayette-Clayton- Including the cities of Waukon, Cresco, Oelwein, Elkader, New Hampton, and Decorah 507 AM CDT Fri Aug 7 2026 ...DENSE FOG ADVISORY REMAINS IN EFFECT UNTIL 9 AM CDT THIS MORNING... * WHAT...Visibility 1/4 mile or less in dense fog. * WHERE...Allamakee, Chickasaw, Clayton, Fayette, Howard, and Winneshiek Counties. * WHEN...Until 9 AM CDT this morning. * IMPACTS...Low visibility could make driving conditions hazardous. PRECAUTIONARY/PREPAREDNESS ACTIONS... If driving, slow down, use your headlights, and leave plenty of distance ahead of you. && $$ JAR Action: Area Extended Issued At: 2026-08-07 05:15:36 686 WWUS73 KARX 071015 NPWARX URGENT - WEATHER MESSAGE National Weather Service La Crosse WI 515 AM CDT Fri Aug 7 2026 IAZ018-071400- /O.EXA.KARX.FG.Y.0010.000000T0000Z-260807T1400Z/ Floyd- Including the cities of Charles City 515 AM CDT Fri Aug 7 2026 ...DENSE FOG ADVISORY IN EFFECT UNTIL 9 AM CDT THIS MORNING... * WHAT...Visibility 1 to 2 miles in dense fog. * WHERE...Floyd County. * WHEN...Until 9 AM CDT this morning. * IMPACTS...Low visibility could make driving conditions hazardous. PRECAUTIONARY/PREPAREDNESS ACTIONS... If driving, slow down, use your headlights, and leave plenty of distance ahead of you. && $$ IAZ009>011-019-029-030-MNZ095-096-071400- /O.CON.KARX.FG.Y.0010.000000T0000Z-260807T1400Z/ Howard-Winneshiek-Allamakee-Chickasaw-Fayette-Clayton-Fillmore- Houston- Including the cities of Waukon, Cresco, Preston, Oelwein, Elkader, New Hampton, Caledonia, and Decorah 515 AM CDT Fri Aug 7 2026 ...DENSE FOG ADVISORY REMAINS IN EFFECT UNTIL 9 AM CDT THIS MORNING... * WHAT...Visibility 1/4 mile or less in dense fog. * WHERE...In Iowa, Allamakee, Chickasaw, Clayton, Fayette, Howard, and Winneshiek Counties. In Minnesota, Fillmore and Houston Counties. * WHEN...Until 9 AM CDT this morning. * IMPACTS...Low visibility could make driving conditions hazardous. PRECAUTIONARY/PREPAREDNESS ACTIONS... If driving, slow down, use your headlights, and leave plenty of distance ahead of you. && $$ JAR Action: Continued Issued At: 2026-08-07 05:15:36 686 WWUS73 KARX 071015 NPWARX URGENT - WEATHER MESSAGE National Weather Service La Crosse WI 515 AM CDT Fri Aug 7 2026 IAZ018-071400- /O.EXA.KARX.FG.Y.0010.000000T0000Z-260807T1400Z/ Floyd- Including the cities of Charles City 515 AM CDT Fri Aug 7 2026 ...DENSE FOG ADVISORY IN EFFECT UNTIL 9 AM CDT THIS MORNING... * WHAT...Visibility 1 to 2 miles in dense fog. * WHERE...Floyd County. * WHEN...Until 9 AM CDT this morning. * IMPACTS...Low visibility could make driving conditions hazardous. PRECAUTIONARY/PREPAREDNESS ACTIONS... If driving, slow down, use your headlights, and leave plenty of distance ahead of you. && $$ IAZ009>011-019-029-030-MNZ095-096-071400- /O.CON.KARX.FG.Y.0010.000000T0000Z-260807T1400Z/ Howard-Winneshiek-Allamakee-Chickasaw-Fayette-Clayton-Fillmore- Houston- Including the cities of Waukon, Cresco, Preston, Oelwein, Elkader, New Hampton, Caledonia, and Decorah 515 AM CDT Fri Aug 7 2026 ...DENSE FOG ADVISORY REMAINS IN EFFECT UNTIL 9 AM CDT THIS MORNING... * WHAT...Visibility 1/4 mile or less in dense fog. * WHERE...In Iowa, Allamakee, Chickasaw, Clayton, Fayette, Howard, and Winneshiek Counties. In Minnesota, Fillmore and Houston Counties. * WHEN...Until 9 AM CDT this morning. * IMPACTS...Low visibility could make driving conditions hazardous. PRECAUTIONARY/PREPAREDNESS ACTIONS... If driving, slow down, use your headlights, and leave plenty of distance ahead of you. && $$ JAR Action: Continued Issued At: 2026-08-07 06:35:38 660 WWUS73 KARX 071135 NPWARX URGENT - WEATHER MESSAGE National Weather Service La Crosse WI 635 AM CDT Fri Aug 7 2026 IAZ008-WIZ053>055-061-071400- /O.EXA.KARX.FG.Y.0010.000000T0000Z-260807T1400Z/ Mitchell-Vernon-Crawford-Richland-Grant- Including the cities of Osage, Richland Center, Prairie Du Chien, Viroqua, and Platteville 635 AM CDT Fri Aug 7 2026 ...DENSE FOG ADVISORY IN EFFECT UNTIL 9 AM CDT THIS MORNING... * WHAT...Visibility 1/4 mile or less in dense fog. * WHERE...In Iowa, Mitchell County. In Wisconsin, Crawford, Grant, Richland, and Vernon Counties. * WHEN...Until 9 AM CDT this morning. * IMPACTS...Low visibility could make driving conditions hazardous. PRECAUTIONARY/PREPAREDNESS ACTIONS... If driving, slow down, use your headlights, and leave plenty of distance ahead of you. && $$ IAZ009>011-018-019-029-030-MNZ095-096-071400- /O.CON.KARX.FG.Y.0010.000000T0000Z-260807T1400Z/ Howard-Winneshiek-Allamakee-Floyd-Chickasaw-Fayette-Clayton-Fillmore- Houston- Including the cities of Decorah, New Hampton, Oelwein, Elkader, Preston, Caledonia, Waukon, Charles City, and Cresco 635 AM CDT Fri Aug 7 2026 ...DENSE FOG ADVISORY REMAINS IN EFFECT UNTIL 9 AM CDT THIS MORNING... * WHAT...Visibility 1/4 mile or less in dense fog. * WHERE...In Iowa, Floyd, Allamakee, Chickasaw, Clayton, Fayette, Howard, and Winneshiek Counties. In Minnesota, Fillmore and Houston Counties. * WHEN...Until 9 AM CDT this morning. * IMPACTS...Low visibility could make driving conditions hazardous. PRECAUTIONARY/PREPAREDNESS ACTIONS... If driving, slow down, use your headlights, and leave plenty of distance ahead of you. && $$ KDS Action: Area Extended Issued At: 2026-08-07 06:35:38 660 WWUS73 KARX 071135 NPWARX URGENT - WEATHER MESSAGE National Weather Service La Crosse WI 635 AM CDT Fri Aug 7 2026 IAZ008-WIZ053>055-061-071400- /O.EXA.KARX.FG.Y.0010.000000T0000Z-260807T1400Z/ Mitchell-Vernon-Crawford-Richland-Grant- Including the cities of Osage, Richland Center, Prairie Du Chien, Viroqua, and Platteville 635 AM CDT Fri Aug 7 2026 ...DENSE FOG ADVISORY IN EFFECT UNTIL 9 AM CDT THIS MORNING... * WHAT...Visibility 1/4 mile or less in dense fog. * WHERE...In Iowa, Mitchell County. In Wisconsin, Crawford, Grant, Richland, and Vernon Counties. * WHEN...Until 9 AM CDT this morning. * IMPACTS...Low visibility could make driving conditions hazardous. PRECAUTIONARY/PREPAREDNESS ACTIONS... If driving, slow down, use your headlights, and leave plenty of distance ahead of you. && $$ IAZ009>011-018-019-029-030-MNZ095-096-071400- /O.CON.KARX.FG.Y.0010.000000T0000Z-260807T1400Z/ Howard-Winneshiek-Allamakee-Floyd-Chickasaw-Fayette-Clayton-Fillmore- Houston- Including the cities of Decorah, New Hampton, Oelwein, Elkader, Preston, Caledonia, Waukon, Charles City, and Cresco 635 AM CDT Fri Aug 7 2026 ...DENSE FOG ADVISORY REMAINS IN EFFECT UNTIL 9 AM CDT THIS MORNING... * WHAT...Visibility 1/4 mile or less in dense fog. * WHERE...In Iowa, Floyd, Allamakee, Chickasaw, Clayton, Fayette, Howard, and Winneshiek Counties. In Minnesota, Fillmore and Houston Counties. * WHEN...Until 9 AM CDT this morning. * IMPACTS...Low visibility could make driving conditions hazardous. PRECAUTIONARY/PREPAREDNESS ACTIONS... If driving, slow down, use your headlights, and leave plenty of distance ahead of you. && $$ KDS Action: Area Extended Issued At: 2026-08-07 07:36:41 150 WWUS73 KARX 071236 NPWARX URGENT - WEATHER MESSAGE National Weather Service La Crosse WI 736 AM CDT Fri Aug 7 2026 MNZ094-071400- /O.EXA.KARX.FG.Y.0010.000000T0000Z-260807T1400Z/ Mower- Including the cities of Austin 736 AM CDT Fri Aug 7 2026 ...DENSE FOG ADVISORY IN EFFECT UNTIL 9 AM CDT THIS MORNING... * WHAT...Visibility 1/4 mile or less in dense fog. * WHERE...Mower County. * WHEN...Until 9 AM CDT this morning. * IMPACTS...Low visibility could make driving conditions hazardous. PRECAUTIONARY/PREPAREDNESS ACTIONS... If driving, slow down, use your headlights, and leave plenty of distance ahead of you. && $$ IAZ008>011-018-019-029-030-MNZ095-096-WIZ053>055-061-071400- /O.CON.KARX.FG.Y.0010.000000T0000Z-260807T1400Z/ Mitchell-Howard-Winneshiek-Allamakee-Floyd-Chickasaw-Fayette-Clayton- Fillmore-Houston-Vernon-Crawford-Richland-Grant- Including the cities of Decorah, Osage, New Hampton, Oelwein, Elkader, Preston, Richland Center, Prairie Du Chien, Platteville, Caledonia, Waukon, Viroqua, Charles City, and Cresco 736 AM CDT Fri Aug 7 2026 ...DENSE FOG ADVISORY REMAINS IN EFFECT UNTIL 9 AM CDT THIS MORNING... * WHAT...Visibility 1/4 mile or less in dense fog. * WHERE...Portions of north central and northeast Iowa, southeast Minnesota, and southwest Wisconsin. * WHEN...Until 9 AM CDT this morning. * IMPACTS...Low visibility could make driving conditions hazardous. PRECAUTIONARY/PREPAREDNESS ACTIONS... If driving, slow down, use your headlights, and leave plenty of distance ahead of you. && $$ KDS Action: Continued Issued At: 2026-08-07 07:36:41 150 WWUS73 KARX 071236 NPWARX URGENT - WEATHER MESSAGE National Weather Service La Crosse WI 736 AM CDT Fri Aug 7 2026 MNZ094-071400- /O.EXA.KARX.FG.Y.0010.000000T0000Z-260807T1400Z/ Mower- Including the cities of Austin 736 AM CDT Fri Aug 7 2026 ...DENSE FOG ADVISORY IN EFFECT UNTIL 9 AM CDT THIS MORNING... * WHAT...Visibility 1/4 mile or less in dense fog. * WHERE...Mower County. * WHEN...Until 9 AM CDT this morning. * IMPACTS...Low visibility could make driving conditions hazardous. PRECAUTIONARY/PREPAREDNESS ACTIONS... If driving, slow down, use your headlights, and leave plenty of distance ahead of you. && $$ IAZ008>011-018-019-029-030-MNZ095-096-WIZ053>055-061-071400- /O.CON.KARX.FG.Y.0010.000000T0000Z-260807T1400Z/ Mitchell-Howard-Winneshiek-Allamakee-Floyd-Chickasaw-Fayette-Clayton- Fillmore-Houston-Vernon-Crawford-Richland-Grant- Including the cities of Decorah, Osage, New Hampton, Oelwein, Elkader, Preston, Richland Center, Prairie Du Chien, Platteville, Caledonia, Waukon, Viroqua, Charles City, and Cresco 736 AM CDT Fri Aug 7 2026 ...DENSE FOG ADVISORY REMAINS IN EFFECT UNTIL 9 AM CDT THIS MORNING... * WHAT...Visibility 1/4 mile or less in dense fog. * WHERE...Portions of north central and northeast Iowa, southeast Minnesota, and southwest Wisconsin. * WHEN...Until 9 AM CDT this morning. * IMPACTS...Low visibility could make driving conditions hazardous. PRECAUTIONARY/PREPAREDNESS ACTIONS... If driving, slow down, use your headlights, and leave plenty of distance ahead of you. && $$ KDS Action: Expired Issued At: 2026-08-07 08:53:13 906 WWUS73 KARX 071352 NPWARX URGENT - WEATHER MESSAGE National Weather Service La Crosse WI 852 AM CDT Fri Aug 7 2026 IAZ008>011-018-019-029-030-MNZ094>096-WIZ053>055-061-071500- /O.EXP.KARX.FG.Y.0010.000000T0000Z-260807T1400Z/ Mitchell-Howard-Winneshiek-Allamakee-Floyd-Chickasaw-Fayette-Clayton- Mower-Fillmore-Houston-Vernon-Crawford-Richland-Grant- Including the cities of Decorah, Osage, New Hampton, Oelwein, Elkader, Austin, Preston, Richland Center, Prairie Du Chien, Platteville, Caledonia, Waukon, Viroqua, Charles City, and Cresco 852 AM CDT Fri Aug 7 2026 ...DENSE FOG ADVISORY WILL EXPIRE AT 9 AM CDT THIS MORNING... Visibilities are improving and will continue to do so over the next hour. $$ KDS | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||