Alert archive / Missouri / Freeze Warnings in 2021
Freeze Warning 8, NWS St. Louis, MO
NWS St. Louis, MO issued this freeze warning at Nov 3, 2021, 3:14 AM CDT for 7 counties in Missouri; Randolph County, Illinois. It took effect at Nov 4, 2021, 1:00 AM CDT. It was in force for 8 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 3, 2021, 3:14 AM CDT (08:14 UTC)
- In effect from
- Nov 4, 2021, 1:00 AM CDT
- Expired
- Nov 4, 2021, 9:00 AM CDT
- In force
- 8 hr
- Issued by
- NWS St. Louis, MO
Counties Randolph County, IL, Crawford County, MO, Iron County, MO, Madison County, MO, Reynolds County, MO, Saint Francois County, MO, Sainte Genevieve County, MO, Washington County, MO
The radar
The St Louis radar (KLSX), 105 km from the middle of the area, began a volume at 08:12 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
Springfield, MO (KSGF), launched 00:00Z, 8.2 hours before the alert went out and 300 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
- 1053 m above ground
- 0-6 km bulk shear
- 50 kt
- 0-1 km storm-relative helicity
- -44 m²/s²
- 0-3 km storm-relative helicity
- 6 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
285 WWUS73 KLSX 030814 NPWLSX URGENT - WEATHER MESSAGE National Weather Service St Louis MO 314 AM CDT Wed Nov 3 2021 ILZ079-032315- /O.UPG.KLSX.FZ.A.0002.211104T0600Z-211104T1400Z/ /O.NEW.KLSX.FZ.W.0008.211104T0600Z-211104T1400Z/ /O.CON.KLSX.FZ.W.0007.000000T0000Z-211103T1400Z/ Randolph IL- Including the cities of Chester and Sparta 314 AM CDT Wed Nov 3 2021 ...FREEZE WARNING REMAINS IN EFFECT UNTIL 9 AM CDT THIS MORNING... ...FREEZE WARNING IN EFFECT FROM 1 AM TO 9 AM CDT THURSDAY... * WHAT...For the first Freeze Warning, sub-freezing temperatures as low as 29 expected. For the second Freeze Warning, sub-freezing temperatures as low as 31. * WHERE...Randolph IL County. * WHEN...For the first Freeze Warning, from 1 AM to 9 AM CDT Thursday. For the second Freeze Warning, 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. && $$ MOZ072>075-084-085-099-032315- /O.UPG.KLSX.FZ.A.0002.211104T0600Z-211104T1400Z/ /O.NEW.KLSX.FZ.W.0008.211104T0600Z-211104T1400Z/ Crawford MO-Washington MO-Saint Francois MO-Sainte Genevieve MO- Iron MO-Madison MO-Reynolds MO- Including the cities of Farmington 314 AM CDT Wed Nov 3 2021 ...FREEZE WARNING IN EFFECT FROM 1 AM TO 9 AM CDT THURSDAY... * WHAT...Sub-freezing temperatures as low as 26 expected. * WHERE...Crawford MO, Washington MO, Iron MO, Madison MO, Reynolds MO, Saint Francois MO and Sainte Genevieve MO Counties. * WHEN...From 1 AM to 9 AM CDT Thursday. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ ILZ058>060-064-065-069-070-074-098>102-MOZ041-047>052-059>065-031400- /O.CON.KLSX.FZ.W.0007.000000T0000Z-211103T1400Z/ Greene IL-Macoupin IL-Montgomery IL-Bond IL-Fayette IL-Clinton IL- Marion IL-Washington IL-Calhoun IL-Jersey IL-Madison IL-Saint Clair-Monroe IL-Boone MO-Moniteau MO-Cole MO-Osage MO-Callaway MO- Montgomery MO-Lincoln MO-Gasconade MO-Warren MO-Saint Charles MO- Franklin MO-Saint Louis MO-Saint Louis City MO-Jefferson MO- Including the cities of Columbia, Saint Charles, Jefferson City, Alton, Litchfield, Cahokia, Washington, Saint Louis, Centralia, Belleville, Salem, Edwardsville, Union, Sullivan, Vandalia, and Fulton 314 AM CDT Wed Nov 3 2021 ...FREEZE WARNING REMAINS IN EFFECT UNTIL 9 AM CDT THIS MORNING... * WHAT...Sub-freezing temperatures as low as 30. * WHERE...Portions of south central and southwest Illinois, and portions of central and east central Missouri. * WHEN...Until 9 AM CDT this morning. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ Pfahler
4 follow-up statements
504 WWUS73 KLSX 031722 NPWLSX URGENT - WEATHER MESSAGE National Weather Service St Louis MO 1222 PM CDT Wed Nov 3 2021 ILZ079-MOZ072>075-084-085-099-041400- /O.CON.KLSX.FZ.W.0008.211104T0600Z-211104T1400Z/ Randolph IL-Crawford MO-Washington MO-Saint Francois MO-Sainte Genevieve MO-Iron MO-Madison MO-Reynolds MO- Including the cities of Farmington, Chester, and Sparta 1222 PM CDT Wed Nov 3 2021 ...FREEZE WARNING REMAINS IN EFFECT FROM 1 AM TO 9 AM CDT THURSDAY... * WHAT...Sub-freezing temperatures as low as 27 expected. * WHERE...In Missouri, Crawford MO, Washington MO, Iron MO, Madison MO, Reynolds MO, Saint Francois MO and Sainte Genevieve MO Counties. In Illinois, Randolph IL County. * WHEN...From 1 AM to 9 AM CDT Thursday. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ Carney
470 WWUS73 KLSX 031949 NPWLSX URGENT - WEATHER MESSAGE National Weather Service St Louis MO 249 PM CDT Wed Nov 3 2021 ILZ079-MOZ072>075-084-085-099-041100- /O.CON.KLSX.FZ.W.0008.211104T0600Z-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 249 PM CDT Wed Nov 3 2021 ...FREEZE WARNING REMAINS IN EFFECT FROM 1 AM TO 9 AM CDT THURSDAY... * WHAT...Sub-freezing temperatures as low as 30 expected. * 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 1 AM to 9 AM CDT Thursday. * 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. && $$ Carney
056 WWUS73 KLSX 040813 NPWLSX URGENT - WEATHER MESSAGE National Weather Service St Louis MO 313 AM CDT Thu Nov 4 2021 ILZ079-MOZ072>075-084-085-099-041400- /O.CON.KLSX.FZ.W.0008.000000T0000Z-211104T1400Z/ Randolph IL-Crawford MO-Washington MO-Saint Francois MO-Sainte Genevieve MO-Iron MO-Madison MO-Reynolds MO- Including the cities of Farmington, Chester, and Sparta 313 AM CDT Thu Nov 4 2021 ...FREEZE WARNING REMAINS IN EFFECT UNTIL 9 AM CDT THIS MORNING... * WHAT...Sub-freezing temperatures as low as 25. * WHERE...In Missouri, Crawford MO, Washington MO, Iron MO, Madison MO, Reynolds MO, Saint Francois MO and Sainte Genevieve MO Counties. In Illinois, Randolph IL County. * WHEN...Until 9 AM CDT this morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ Pfahler
059 WWUS73 KLSX 041357 NPWLSX URGENT - WEATHER MESSAGE National Weather Service St Louis MO 857 AM CDT Thu Nov 4 2021 ILZ079-MOZ072>075-084-085-099-041500- /O.EXP.KLSX.FZ.W.0008.000000T0000Z-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 857 AM CDT Thu Nov 4 2021 ...FREEZE WARNING WILL EXPIRE AT 9 AM CDT THIS MORNING... Temperatures will continue to warm above freezing this morning. $$ 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.