Alert archive / Missouri / Wind Advisories in 2021
Wind Advisory 4, NWS St. Louis, MO
NWS St. Louis, MO issued this wind advisory at Mar 29, 2021, 3:00 AM CDT for 4 counties in Missouri; Adams County, Brown County, Illinois. It took effect at Mar 29, 2021, 12:00 PM CDT. It was in force for 8 hr.
The area
The counties it named.
The facts
- Issued
- Mar 29, 2021, 3:00 AM CDT (08:00 UTC)
- In effect from
- Mar 29, 2021, 12:00 PM CDT
- Expired
- Mar 29, 2021, 8:00 PM CDT
- In force
- 8 hr
- Issued by
- NWS St. Louis, MO
Counties Adams County, IL, Brown County, IL, Knox County, MO, Lewis County, MO, Marion County, MO, Shelby County, MO
The radar
The St Louis radar (KLSX), 161 km from the middle of the area, began a volume at 08:02 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, 8.0 hours before the alert went out and 206 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
- 1587 m above ground
- 0-6 km bulk shear
- 48 kt
- 0-1 km storm-relative helicity
- 53 m²/s²
- 0-3 km storm-relative helicity
- 119 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
014 WWUS73 KLSX 290800 NPWLSX URGENT - WEATHER MESSAGE National Weather Service Saint Louis MO 300 AM CDT Mon Mar 29 2021 ILZ095-096-MOZ018-019-026-027-300100- /O.NEW.KLSX.WI.Y.0004.210329T1700Z-210330T0100Z/ Adams IL-Brown IL-Knox MO-Lewis MO-Marion MO-Shelby MO- Including the cities of Hannibal, Mount Sterling, and Quincy 300 AM CDT Mon Mar 29 2021 ...WIND ADVISORY IN EFFECT FROM NOON TODAY TO 8 PM CDT THIS EVENING... * WHAT...South winds 20 to 30 mph with gusts up to 45 mph expected. * WHERE...In Missouri, Knox MO, Lewis MO, Shelby MO and Marion MO Counties. In Illinois, Adams IL and Brown IL Counties. * WHEN...From noon today to 8 PM CDT 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. && $$ TES
1 follow-up statement
491 WWUS73 KLSX 300108 NPWLSX URGENT - WEATHER MESSAGE National Weather Service Saint Louis MO 808 PM CDT Mon Mar 29 2021 ILZ095-096-MOZ018-019-026-027-300215- /O.EXP.KLSX.WI.Y.0004.000000T0000Z-210330T0100Z/ Adams IL-Brown IL-Knox MO-Lewis MO-Marion MO-Shelby MO- Including the cities of Hannibal, Mount Sterling, and Quincy 808 PM CDT Mon Mar 29 2021 ...WIND ADVISORY HAS EXPIRED... Wind gusts have decreased this evening. Therefore, the Wind Advisory has been allowed to expire. $$ Pfahler
The office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 29, 3:00 AM CDT | Red Flag Warning | LSX | Audrain, Boone, Callaway, Cole, Knox, Lewis and 6 more | 17 hr |
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.