Alert archive / Missouri / Wind Advisories in 2020
Wind Advisory 9, NWS St. Louis, MO
NWS St. Louis, MO issued this wind advisory at Dec 23, 2020, 3:15 AM CST for 17 counties in Illinois; 26 counties in Missouri. It took effect at Dec 23, 2020, 6:00 AM CST. It was in force for 18 hr.
The area
The counties it named.
The facts
- Issued
- Dec 23, 2020, 3:15 AM CST (09:15 UTC)
- In effect from
- Dec 23, 2020, 6:00 AM CST
- Expired
- Dec 24, 2020, 12:00 AM CST
- In force
- 18 hr
- Issued by
- NWS St. Louis, MO
All 43 counties
Adams County, IL, Bond County, IL, Brown County, IL, Calhoun County, IL, Clinton County, IL, Fayette County, IL, Greene County, IL, Jersey County, IL, Macoupin County, IL, Madison County, IL, Marion County, IL, Monroe County, IL, Montgomery County, IL, Pike County, IL, Randolph County, IL, Saint Clair County, IL, Washington County, IL, Audrain County, MO, Boone County, MO, Callaway County, MO, City of Saint Louis, MO, Cole County, MO, Crawford County, MO, Franklin County, MO, Gasconade County, MO, Jefferson County, MO, Knox County, MO, Lewis County, MO, Lincoln County, MO, Marion County, MO, Moniteau County, MO, Monroe County, MO, Montgomery County, MO, Osage County, MO, Pike County, MO, Ralls County, MO, Saint Charles County, MO, Saint Francois County, MO, Saint Louis County, MO, Sainte Genevieve County, MO, Shelby County, MO, Warren County, MO, Washington County, MO
The nearest sounding before it
Lincoln, IL (KILX), launched 00:00Z, 9.3 hours before the alert went out and 236 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
- 2390 m above ground
- 0-6 km bulk shear
- 43 kt
- 0-1 km storm-relative helicity
- 241 m²/s²
- 0-3 km storm-relative helicity
- 298 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
372 WWUS73 KLSX 230915 NPWLSX URGENT - WEATHER MESSAGE National Weather Service Saint Louis MO 315 AM CST Wed Dec 23 2020 ILZ058>060-064-065-095>099-MOZ018-019-026-027-034>036-232115- /O.NEW.KLSX.WI.Y.0009.201223T1200Z-201224T0600Z/ Adams IL-Bond IL-Brown IL-Calhoun IL-Fayette IL-Greene IL- Jersey IL-Knox MO-Lewis MO-Macoupin IL-Marion MO-Monroe MO- Montgomery IL-Pike IL-Pike MO-Ralls MO-Shelby MO- Including the cities of Bowling Green, Hannibal, Litchfield, Mount Sterling, Pittsfield, Quincy, and Vandalia 315 AM CST Wed Dec 23 2020 ...WIND ADVISORY IN EFFECT UNTIL MIDNIGHT CST TONIGHT... * WHAT...Southwest winds 20 to 25 mph with gusts up to 45 mph expected. * WHERE...Portions of northeast Missouri and south central, southwest and west central Illinois. * WHEN...Until midnight CST tonight. * 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 including holiday decorations. && $$ ILZ069-070-074-079-100>102-MOZ041-042-047>052-059>065-072>075- 232115- /O.NEW.KLSX.WI.Y.0009.201223T1200Z-201224T0000Z/ Audrain MO-Boone MO-Callaway MO-Clinton IL-Cole MO-Crawford MO- Franklin MO-Gasconade MO-Jefferson MO-Lincoln MO-Madison IL- Marion IL-Moniteau MO-Monroe IL-Montgomery MO-Osage MO- Randolph IL-Saint Charles MO-Saint Clair-Saint Francois MO- Saint Louis City MO-Saint Louis MO-Sainte Genevieve MO-Warren MO- Washington IL-Washington MO- Including the cities of Alton, Belleville, Cahokia, Centralia, Chester, Columbia, Edwardsville, Farmington, Fulton, Jefferson City, Mexico, Saint Charles, Saint Louis, Salem, Sparta, Sullivan, Union, and Washington 315 AM CST Wed Dec 23 2020 ...WIND ADVISORY IN EFFECT UNTIL 6 PM CST THIS EVENING... * WHAT...Southwest winds 15 to 25 mph with gusts up to 45 mph expected. * WHERE...Portions of central, east central and southeast Missouri and south central and southwest Illinois. * WHEN...Until 6 PM CST this evening. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects including holiday decorations. && $$ Britt
3 follow-up statements
523 WWUS73 KLSX 232058 NPWLSX URGENT - WEATHER MESSAGE National Weather Service Saint Louis MO 258 PM CST Wed Dec 23 2020 ILZ058>060-064-065-095>099-MOZ018-019-026-027-034>036-240600- /O.CON.KLSX.WI.Y.0009.000000T0000Z-201224T0600Z/ Adams IL-Bond IL-Brown IL-Calhoun IL-Fayette IL-Greene IL- Jersey IL-Knox MO-Lewis MO-Macoupin IL-Marion MO-Monroe MO- Montgomery IL-Pike IL-Pike MO-Ralls MO-Shelby MO- Including the cities of Bowling Green, Hannibal, Litchfield, Mount Sterling, Pittsfield, Quincy, and Vandalia 258 PM CST Wed Dec 23 2020 ...WIND ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT CST TONIGHT... * WHAT...West winds 20 to 25 mph with gusts up to 45 mph expected. * WHERE...Portions of northeast Missouri and south central, southwest and west central Illinois. * WHEN...Until midnight CST tonight. * 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. && $$ ILZ069-070-074-079-100>102-MOZ041-042-047>052-059>065-072>075- 240000- /O.CON.KLSX.WI.Y.0009.000000T0000Z-201224T0000Z/ Audrain MO-Boone MO-Callaway MO-Clinton IL-Cole MO-Crawford MO- Franklin MO-Gasconade MO-Jefferson MO-Lincoln MO-Madison IL- Marion IL-Moniteau MO-Monroe IL-Montgomery MO-Osage MO- Randolph IL-Saint Charles MO-Saint Clair-Saint Francois MO- Saint Louis City MO-Saint Louis MO-Sainte Genevieve MO-Warren MO- Washington IL-Washington MO- Including the cities of Alton, Belleville, Cahokia, Centralia, Chester, Columbia, Edwardsville, Farmington, Fulton, Jefferson City, Mexico, Saint Charles, Saint Louis, Salem, Sparta, Sullivan, Union, and Washington 258 PM CST Wed Dec 23 2020 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 6 PM CST THIS EVENING... * WHAT...Southwest winds 15 to 25 mph with gusts up to 45 mph expected. * WHERE...Portions of central, east central and southeast Missouri and south central and southwest Illinois. * WHEN...Until 6 PM CST this evening. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$ Pfahler
422 WWUS73 KLSX 240019 NPWLSX URGENT - WEATHER MESSAGE National Weather Service Saint Louis MO 619 PM CST Wed Dec 23 2020 ILZ069-070-074-079-100>102-MOZ041-042-047>052-059>065-072>075- 240130- /O.EXP.KLSX.WI.Y.0009.000000T0000Z-201224T0000Z/ Audrain MO-Boone MO-Callaway MO-Clinton IL-Cole MO-Crawford MO- Franklin MO-Gasconade MO-Jefferson MO-Lincoln MO-Madison IL- Marion IL-Moniteau MO-Monroe IL-Montgomery MO-Osage MO- Randolph IL-Saint Charles MO-Saint Clair-Saint Francois MO- Saint Louis City MO-Saint Louis MO-Sainte Genevieve MO-Warren MO- Washington IL-Washington MO- Including the cities of Alton, Belleville, Cahokia, Centralia, Chester, Columbia, Edwardsville, Farmington, Fulton, Jefferson City, Mexico, Saint Charles, Saint Louis, Salem, Sparta, Sullivan, Union, and Washington 619 PM CST Wed Dec 23 2020 ...WIND ADVISORY HAS EXPIRED... Wind speeds have fallen below Wind Advisory criteria but will remain breezy through the night. $$ ILZ058>060-064-065-095>099-MOZ018-019-026-027-034>036-240600- /O.CON.KLSX.WI.Y.0009.000000T0000Z-201224T0600Z/ Adams IL-Bond IL-Brown IL-Calhoun IL-Fayette IL-Greene IL- Jersey IL-Knox MO-Lewis MO-Macoupin IL-Marion MO-Monroe MO- Montgomery IL-Pike IL-Pike MO-Ralls MO-Shelby MO- Including the cities of Bowling Green, Hannibal, Litchfield, Mount Sterling, Pittsfield, Quincy, and Vandalia 619 PM CST Wed Dec 23 2020 ...WIND ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT CST TONIGHT... * WHAT...West winds 20 to 25 mph with gusts up to 45 mph expected. * WHERE...Portions of northeast Missouri and west central Illinois. * WHEN...Until midnight CST tonight. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$ 19
796 WWUS73 KLSX 240554 NPWLSX URGENT - WEATHER MESSAGE National Weather Service Saint Louis MO 1154 PM CST Wed Dec 23 2020 ILZ058>060-064-065-095>099-MOZ018-019-026-027-034>036-240700- /O.EXP.KLSX.WI.Y.0009.000000T0000Z-201224T0600Z/ Adams IL-Bond IL-Brown IL-Calhoun IL-Fayette IL-Greene IL- Jersey IL-Knox MO-Lewis MO-Macoupin IL-Marion MO-Monroe MO- Montgomery IL-Pike IL-Pike MO-Ralls MO-Shelby MO- Including the cities of Bowling Green, Hannibal, Litchfield, Mount Sterling, Pittsfield, Quincy, and Vandalia 1154 PM CST Wed Dec 23 2020 ...WIND ADVISORY WILL EXPIRE AT MIDNIGHT CST TONIGHT... Winds are expected to gradually decrease through the night, so the advisory will be allowed to expire. $$ Britt
Nearby
Wind Advisories in Missouri, 2020Wind Advisories in Illinois, 2020Every wind advisory in 2020
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.