Alert archive / Missouri / Freeze Warnings in 2021
Freeze Warning 6, NWS St. Louis, MO
NWS St. Louis, MO issued this freeze warning at Nov 1, 2021, 2:32 PM CDT for 4 counties in Missouri; Adams County, Brown County, Pike County, Illinois. It took effect at Nov 2, 2021, 12:00 AM CDT. It was in force for 9 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Nov 1, 2021, 2:32 PM CDT (19:32 UTC)
- In effect from
- Nov 2, 2021, 12:00 AM CDT
- Expired
- Nov 2, 2021, 9:00 AM CDT
- In force
- 9 hr
- Issued by
- NWS St. Louis, MO
Counties Adams County, IL, Brown County, IL, Pike County, IL, Knox County, MO, Lewis County, MO, Marion County, MO, Shelby County, MO
The radar
The St Louis radar (KLSX), 152 km from the middle of the area, began a volume at 19:32 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 12:00Z, 7.5 hours before the alert went out and 207 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
- 1471 m above ground
- 0-6 km bulk shear
- 71 kt
- 0-1 km storm-relative helicity
- -85 m²/s²
- 0-3 km storm-relative helicity
- 21 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
942 WWUS73 KLSX 011932 NPWLSX URGENT - WEATHER MESSAGE National Weather Service St Louis MO 232 PM CDT Mon Nov 1 2021 ILZ095>097-MOZ018-019-026-027-021045- /O.NEW.KLSX.FZ.W.0006.211102T0500Z-211102T1400Z/ Adams IL-Brown IL-Pike IL-Knox MO-Lewis MO-Shelby MO-Marion MO- Including the cities of Hannibal, Mount Sterling, Quincy, and Pittsfield 232 PM CDT Mon Nov 1 2021 ...FREEZE WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM CDT TUESDAY... * WHAT...Sub-freezing temperatures as low as 30 expected. * WHERE...In Missouri, Knox MO, Lewis MO, Marion MO and Shelby MO Counties. In Illinois, Adams IL, Brown IL and Pike IL Counties. * WHEN...From Midnight tonight to 9 AM CDT Tuesday. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ Elmore
2 follow-up statements
371 WWUS73 KLSX 020825 NPWLSX URGENT - WEATHER MESSAGE National Weather Service St Louis MO 325 AM CDT Tue Nov 2 2021 ILZ095>097-MOZ018-019-026-027-021400- /O.CON.KLSX.FZ.W.0006.000000T0000Z-211102T1400Z/ Adams IL-Brown IL-Pike IL-Knox MO-Lewis MO-Shelby MO-Marion MO- Including the cities of Hannibal, Mount Sterling, Quincy, and Pittsfield 325 AM CDT Tue Nov 2 2021 ...FREEZE WARNING REMAINS IN EFFECT UNTIL 9 AM CDT THIS MORNING... * WHAT...Sub-freezing temperatures as low as 30. * WHERE...In Missouri, Knox MO, Lewis MO, Marion MO and Shelby MO Counties. In Illinois, Adams IL, Brown IL and Pike IL Counties. * WHEN...Until 9 AM CDT this morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ ILZ079-MOZ072>075-084-085-099-022330- /O.NEW.KLSX.FZ.A.0002.211104T0600Z-211104T1400Z/ Randolph IL-Crawford MO-Washington MO-Saint Francois MO-Sainte Genevieve MO-Iron MO-Madison MO-Reynolds MO- Including the cities of Farmington, Chester, and Sparta 325 AM CDT Tue Nov 2 2021 ...FREEZE WATCH IN EFFECT FROM LATE WEDNESDAY NIGHT THROUGH THURSDAY MORNING... * WHAT...Sub-freezing temperatures as low as 28 possible. * WHERE...In Missouri, Crawford MO, Washington MO, Iron MO, Madison MO, Reynolds MO, Saint Francois MO and Sainte Genevieve MO Counties. In Illinois, Randolph IL County. * WHEN...From late Wednesday night through Thursday morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ Pfahler
487 WWUS73 KLSX 021355 NPWLSX URGENT - WEATHER MESSAGE National Weather Service St Louis MO 855 AM CDT Tue Nov 2 2021 ILZ095>097-MOZ018-019-026-027-021500- /O.EXP.KLSX.FZ.W.0006.000000T0000Z-211102T1400Z/ Adams IL-Brown IL-Pike IL-Knox MO-Lewis MO-Shelby MO-Marion MO- Including the cities of Hannibal, Mount Sterling, Quincy, and Pittsfield 855 AM CDT Tue Nov 2 2021 ...FREEZE WARNING WILL EXPIRE AT 9 AM CDT THIS MORNING... Temperatures will warm above freezing as the morning progresses. $$ ILZ079-MOZ072>075-084-085-099-030000- /O.CON.KLSX.FZ.A.0002.211104T0600Z-211104T1400Z/ Randolph IL-Crawford MO-Washington MO-Saint Francois MO-Sainte Genevieve MO-Iron MO-Madison MO-Reynolds MO- Including the cities of Farmington, Chester, and Sparta 855 AM CDT Tue Nov 2 2021 ...FREEZE WATCH REMAINS IN EFFECT FROM LATE WEDNESDAY NIGHT THROUGH THURSDAY MORNING... * WHAT...Sub-freezing temperatures as low as 27 possible. * WHERE...In Missouri, Crawford MO, Washington MO, Iron MO, Madison MO, Reynolds MO, Saint Francois MO and Sainte Genevieve MO Counties. In Illinois, Randolph IL County. * WHEN...From late Wednesday night through Thursday morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ Glass
Nearby
Freeze Warnings in Missouri, 2021Freeze Warnings in Illinois, 2021Every freeze warning 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.