Alert archive / Missouri / Wind Advisories in 2020
Wind Advisory 8, NWS St. Louis, MO
NWS St. Louis, MO issued this wind advisory at Nov 18, 2020, 2:35 PM CST for 14 counties in Illinois; 19 counties in Missouri. It took effect at Nov 19, 2020, 6:00 AM CST. It was in force for 12 hr.
The area
The counties it named.
The facts
- Issued
- Nov 18, 2020, 2:35 PM CST (20:35 UTC)
- In effect from
- Nov 19, 2020, 6:00 AM CST
- Expired
- Nov 19, 2020, 6:00 PM CST
- In force
- 12 hr
- Issued by
- NWS St. Louis, MO
All 33 counties
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, Saint Clair 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, Lincoln County, MO, Moniteau County, MO, Montgomery County, MO, Osage County, MO, Pike County, MO, Ralls County, MO, Saint Charles County, MO, Saint Louis County, MO, Warren County, MO, Washington County, MO
The radar
The St Louis radar (KLSX), 17 km from the middle of the area, began a volume at 20:35 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
Lincoln, IL (KILX), launched 12:00Z, 8.6 hours before the alert went out and 235 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
- 2250 m above ground
- 0-6 km bulk shear
- 50 kt
- 0-1 km storm-relative helicity
- 207 m²/s²
- 0-3 km storm-relative helicity
- 383 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
046 WWUS73 KLSX 182035 NPWLSX URGENT - WEATHER MESSAGE National Weather Service Saint Louis MO 235 PM CST Wed Nov 18 2020 ILZ058>060-064-065-069-070-096>102-MOZ035-036-041-042-047>052- 059>065-072-073-190845- /O.NEW.KLSX.WI.Y.0008.201119T1200Z-201120T0000Z/ Audrain MO-Bond IL-Boone MO-Brown IL-Calhoun IL-Callaway MO- Clinton IL-Cole MO-Crawford MO-Fayette IL-Franklin MO- Gasconade MO-Greene IL-Jefferson MO-Jersey IL-Lincoln MO- Macoupin IL-Madison IL-Marion IL-Moniteau MO-Monroe IL- Montgomery IL-Montgomery MO-Osage MO-Pike IL-Pike MO-Ralls MO- Saint Charles MO-Saint Clair IL-Saint Louis City MO- Saint Louis MO-Warren MO-Washington MO- Including the cities of Alton, Belleville, Bowling Green, Cahokia, Centralia, Columbia, Edwardsville, Fulton, Jefferson City, Litchfield, Mexico, Mount Sterling, Pittsfield, Saint Charles, Saint Louis, Salem, Sullivan, Union, Vandalia, and Washington 235 PM CST Wed Nov 18 2020 ...WIND ADVISORY IN EFFECT FROM 6 AM TO 6 PM CST THURSDAY... * WHAT...South winds 15 to 25 mph with gusts up to 45 mph expected. * WHERE...Portions of central, east central and northeast Missouri and south central, southwest and west central Illinois. * WHEN...From 6 AM to 6 PM CST Thursday. * 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. && $$ Maples
3 follow-up statements
208 WWUS73 KLSX 190927 NPWLSX URGENT - WEATHER MESSAGE National Weather Service Saint Louis MO 327 AM CST Thu Nov 19 2020 ILZ058>060-064-065-069-070-096>102-MOZ035-036-041-042-047>052- 059>065-072-073-200000- /O.CON.KLSX.WI.Y.0008.201119T1200Z-201120T0000Z/ Audrain MO-Bond IL-Boone MO-Brown IL-Calhoun IL-Callaway MO- Clinton IL-Cole MO-Crawford MO-Fayette IL-Franklin MO- Gasconade MO-Greene IL-Jefferson MO-Jersey IL-Lincoln MO- Macoupin IL-Madison IL-Marion IL-Moniteau MO-Monroe IL- Montgomery IL-Montgomery MO-Osage MO-Pike IL-Pike MO-Ralls MO- Saint Charles MO-Saint Clair IL-Saint Louis City MO- Saint Louis MO-Warren MO-Washington MO- Including the cities of Alton, Belleville, Bowling Green, Cahokia, Centralia, Columbia, Edwardsville, Fulton, Jefferson City, Litchfield, Mexico, Mount Sterling, Pittsfield, Saint Charles, Saint Louis, Salem, Sullivan, Union, Vandalia, and Washington 327 AM CST Thu Nov 19 2020 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 6 PM CST THIS EVENING... * WHAT...South winds 15 to 25 mph with gusts up to 45 mph expected. * WHERE...Portions of central, east central and northeast Missouri and south central, southwest and west central Illinois. * WHEN...From 6 AM to 6 PM CST Thursday. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$ Carney
320 WWUS73 KLSX 192101 NPWLSX URGENT - WEATHER MESSAGE National Weather Service Saint Louis MO 301 PM CST Thu Nov 19 2020 ILZ058>060-064-065-069-070-096>102-MOZ035-036-041-042-047>052- 059>065-072-073-200000- /O.CON.KLSX.WI.Y.0008.000000T0000Z-201120T0000Z/ Audrain MO-Bond IL-Boone MO-Brown IL-Calhoun IL-Callaway MO- Clinton IL-Cole MO-Crawford MO-Fayette IL-Franklin MO- Gasconade MO-Greene IL-Jefferson MO-Jersey IL-Lincoln MO- Macoupin IL-Madison IL-Marion IL-Moniteau MO-Monroe IL- Montgomery IL-Montgomery MO-Osage MO-Pike IL-Pike MO-Ralls MO- Saint Charles MO-Saint Clair IL-Saint Louis City MO- Saint Louis MO-Warren MO-Washington MO- Including the cities of Alton, Belleville, Bowling Green, Cahokia, Centralia, Columbia, Edwardsville, Fulton, Jefferson City, Litchfield, Mexico, Mount Sterling, Pittsfield, Saint Charles, Saint Louis, Salem, Sullivan, Union, Vandalia, and Washington 301 PM CST Thu Nov 19 2020 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 6 PM CST THIS EVENING... * WHAT...South winds 15 to 25 mph with gusts up to 45 mph expected. * WHERE...Portions of central, east central and northeast Missouri and south central, southwest and west central Illinois. * WHEN...From 6 AM to 6 PM CST Thursday. * 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. && $$ Glass
431 WWUS73 KLSX 200008 NPWLSX URGENT - WEATHER MESSAGE National Weather Service Saint Louis MO 608 PM CST Thu Nov 19 2020 ILZ058>060-064-065-069-070-096>102-MOZ035-036-041-042-047>052- 059>065-072-073-200115- /O.EXP.KLSX.WI.Y.0008.000000T0000Z-201120T0000Z/ Audrain MO-Bond IL-Boone MO-Brown IL-Calhoun IL-Callaway MO- Clinton IL-Cole MO-Crawford MO-Fayette IL-Franklin MO- Gasconade MO-Greene IL-Jefferson MO-Jersey IL-Lincoln MO- Macoupin IL-Madison IL-Marion IL-Moniteau MO-Monroe IL- Montgomery IL-Montgomery MO-Osage MO-Pike IL-Pike MO-Ralls MO- Saint Charles MO-Saint Clair IL-Saint Louis City MO- Saint Louis MO-Warren MO-Washington MO- Including the cities of Alton, Belleville, Bowling Green, Cahokia, Centralia, Columbia, Edwardsville, Fulton, Jefferson City, Litchfield, Mexico, Mount Sterling, Pittsfield, Saint Charles, Saint Louis, Salem, Sullivan, Union, Vandalia, and Washington 608 PM CST Thu Nov 19 2020 ...WIND ADVISORY HAS EXPIRED... The Wind Advisory has been allowed to expire as the winds have begun to gradually diminish early this evening. $$ GKS
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; radar from the NEXRAD Level II archive.