Alert archive / Missouri / Wind Advisories in 2021
Wind Advisory 5, NWS St. Louis, MO
NWS St. Louis, MO issued this wind advisory at Apr 10, 2021, 10:09 AM CDT for 14 counties in Missouri; 10 counties in Illinois. It took effect at Apr 10, 2021, 12:00 PM CDT. It was in force for 12 hr.
The area
The counties it named.
The facts
- Issued
- Apr 10, 2021, 10:09 AM CDT (15:09 UTC)
- In effect from
- Apr 10, 2021, 12:00 PM CDT
- Expired
- Apr 11, 2021, 12:00 AM CDT
- In force
- 12 hr
- Issued by
- NWS St. Louis, MO
All 24 counties
Adams County, IL, Bond County, IL, Brown County, IL, Calhoun County, IL, Greene County, IL, Jersey County, IL, Macoupin County, IL, Madison County, IL, Montgomery County, IL, Pike County, IL, Audrain County, MO, City of Saint Louis, MO, Knox County, MO, Lewis County, MO, Lincoln County, MO, Marion County, MO, Monroe County, MO, Montgomery County, MO, Pike County, MO, Ralls County, MO, Saint Charles County, MO, Saint Louis County, MO, Shelby County, MO, Warren County, MO
The radar
The St Louis radar (KLSX), 72 km from the middle of the area, began a volume at 15:10 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, 3.2 hours before the alert went out and 219 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
- 902 m above ground
- 0-6 km bulk shear
- 47 kt
- 0-1 km storm-relative helicity
- 151 m²/s²
- 0-3 km storm-relative helicity
- 173 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
909 WWUS73 KLSX 101509 NPWLSX URGENT - WEATHER MESSAGE National Weather Service Saint Louis MO 1009 AM CDT Sat Apr 10 2021 ILZ058>060-064-095>100-MOZ018-019-026-027-034>036-042-051-052-060- 061-063-064-110315- /O.NEW.KLSX.WI.Y.0005.210410T1700Z-210411T0500Z/ Adams IL-Audrain MO-Bond IL-Brown IL-Calhoun IL-Greene IL- Jersey IL-Knox MO-Lewis MO-Lincoln MO-Macoupin IL-Madison IL- Marion MO-Monroe MO-Montgomery IL-Montgomery MO-Pike IL-Pike MO- Ralls MO-Saint Charles MO-Saint Louis City MO-Saint Louis MO- Shelby MO-Warren MO- Including the cities of Alton, Bowling Green, Edwardsville, Hannibal, Litchfield, Mexico, Mount Sterling, Pittsfield, Quincy, Saint Charles, and Saint Louis 1009 AM CDT Sat Apr 10 2021 ...WIND ADVISORY IN EFFECT UNTIL MIDNIGHT CDT TONIGHT... * WHAT...West winds 20 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...Until midnight CDT 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. && $$ Pfahler
2 follow-up statements
073 WWUS73 KLSX 101940 NPWLSX URGENT - WEATHER MESSAGE National Weather Service Saint Louis MO 240 PM CDT Sat Apr 10 2021 ILZ058>060-064-095>100-MOZ018-019-026-027-034>036-042-051-052-060- 061-063-064-110500- /O.CON.KLSX.WI.Y.0005.000000T0000Z-210411T0500Z/ Adams IL-Audrain MO-Bond IL-Brown IL-Calhoun IL-Greene IL- Jersey IL-Knox MO-Lewis MO-Lincoln MO-Macoupin IL-Madison IL- Marion MO-Monroe MO-Montgomery IL-Montgomery MO-Pike IL-Pike MO- Ralls MO-Saint Charles MO-Saint Louis City MO-Saint Louis MO- Shelby MO-Warren MO- Including the cities of Alton, Bowling Green, Edwardsville, Hannibal, Litchfield, Mexico, Mount Sterling, Pittsfield, Quincy, Saint Charles, and Saint Louis 240 PM CDT Sat Apr 10 2021 ...WIND ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT CDT TONIGHT... * WHAT...West winds 20 to 25 mph with gusts up to 45 mph expected. * WHERE...Portions of central, east-central, and northeast Missouri and south-central, southwest, and west-central Illinois. * WHEN...Until midnight CDT tonight. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$ Pfahler
902 WWUS73 KLSX 110449 NPWLSX URGENT - WEATHER MESSAGE National Weather Service Saint Louis MO 1149 PM CDT Sat Apr 10 2021 ILZ058>060-064-095>100-MOZ018-019-026-027-034>036-042-051-052-060- 061-063-064-110600- /O.EXP.KLSX.WI.Y.0005.000000T0000Z-210411T0500Z/ Adams IL-Audrain MO-Bond IL-Brown IL-Calhoun IL-Greene IL- Jersey IL-Knox MO-Lewis MO-Lincoln MO-Macoupin IL-Madison IL- Marion MO-Monroe MO-Montgomery IL-Montgomery MO-Pike IL-Pike MO- Ralls MO-Saint Charles MO-Saint Louis City MO-Saint Louis MO- Shelby MO-Warren MO- Including the cities of Alton, Bowling Green, Edwardsville, Hannibal, Litchfield, Mexico, Mount Sterling, Pittsfield, Quincy, Saint Charles, and Saint Louis 1149 PM CDT Sat Apr 10 2021 ...WIND ADVISORY WILL EXPIRE AT MIDNIGHT CDT TONIGHT... Winds have diminished and have fallen below wind advisory criteria. Winds will remain elevated overnight, but will continue to gradually fall. $$ BSH
The office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 9, 8:53 PM CDT | River Flood Warning | LSX | Cole | 64 hr |
| Apr 10, 2:26 PM CDT | River Flood Warning | LSX | Monroe | 68 hr |
| Apr 10, 2:41 PM CDT | River Flood Warning | LSX | Lewis | 4 days |
| Apr 10, 2:41 PM CDT | River Flood Warning | LSX | Marion | 62 hr |
| Apr 10, 2:41 PM CDT | River Flood Warning | LSX | Lincoln | 37 hr |
| Apr 9, 7:26 PM CDT | Severe Thunderstorm Warning | LSX | Randolph, Saint Clair, Washington | 49 min |
| Apr 10, 2:26 PM CDT | River Flood Warning | LSX | Brown | 6 days |
Nearby
Wind Advisories in Missouri, 2021Wind Advisories in Illinois, 2021Every wind advisory in 2021
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.