Alert archive / Missouri / Freeze Warnings in 2021
Freeze Warning 7, NWS St. Louis, MO
NWS St. Louis, MO issued this freeze warning at Nov 2, 2021, 2:04 PM CDT for 14 counties in Missouri; 14 counties in Illinois. It took effect at Nov 3, 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 2, 2021, 2:04 PM CDT (19:04 UTC)
- In effect from
- Nov 3, 2021, 12:00 AM CDT
- Expired
- Nov 3, 2021, 9:00 AM CDT
- In force
- 9 hr
- Issued by
- NWS St. Louis, MO
All 28 counties
Bond 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, Randolph County, IL, Saint Clair County, IL, Washington County, IL, Boone County, MO, Callaway County, MO, City of Saint Louis, MO, Cole County, MO, Franklin County, MO, Gasconade County, MO, Jefferson County, MO, Lincoln County, MO, Moniteau County, MO, Montgomery County, MO, Osage County, MO, Saint Charles County, MO, Saint Louis County, MO, Warren County, MO
The radar
The St Louis radar (KLSX), 11 km from the middle of the area, began a volume at 19:08 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, 7.1 hours before the alert went out and 231 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
- 1558 m above ground
- 0-6 km bulk shear
- 80 kt
- 0-1 km storm-relative helicity
- -103 m²/s²
- 0-3 km storm-relative helicity
- -72 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
412 WWUS73 KLSX 021904 NPWLSX URGENT - WEATHER MESSAGE National Weather Service St Louis MO 204 PM CDT Tue Nov 2 2021 ILZ079-031200- /O.NEW.KLSX.FZ.W.0007.211103T0500Z-211103T1400Z/ /O.CON.KLSX.FZ.A.0002.211104T0600Z-211104T1400Z/ Randolph IL- Including the cities of Chester and Sparta 204 PM CDT Tue Nov 2 2021 ...FREEZE WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM CDT WEDNESDAY... ...FREEZE WATCH REMAINS IN EFFECT FROM LATE WEDNESDAY NIGHT THROUGH THURSDAY MORNING... * WHAT...For the Freeze Warning, sub-freezing temperatures as low as 31 expected. For the Freeze Watch, sub-freezing temperatures as low as 29 possible. * WHERE...Randolph IL County. * WHEN...For the Freeze Warning, from Midnight tonight to 9 AM CDT Wednesday. For the Freeze Watch, 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. && $$ ILZ058>060-064-065-069-070-074-098>102-MOZ041-047>052-059>065-031200- /O.NEW.KLSX.FZ.W.0007.211103T0500Z-211103T1400Z/ Greene IL-Macoupin IL-Montgomery IL-Bond IL-Fayette IL-Clinton IL- Marion IL-Washington IL-Calhoun IL-Jersey IL-Madison IL-Saint Clair-Monroe IL-Boone MO-Moniteau MO-Cole MO-Osage MO-Callaway MO- Montgomery MO-Lincoln MO-Gasconade MO-Warren MO-Saint Charles MO- Franklin MO-Saint Louis MO-Saint Louis City MO-Jefferson MO- Including the cities of Columbia, Saint Charles, Jefferson City, Alton, Litchfield, Cahokia, Washington, Saint Louis, Centralia, Belleville, Salem, Edwardsville, Union, Sullivan, Vandalia, and Fulton 204 PM CDT Tue Nov 2 2021 ...FREEZE WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM CDT WEDNESDAY... * WHAT...Sub-freezing temperatures as low as 30 expected. * WHERE...Portions of south central and southwest Illinois, and portions of central and east central Missouri. * WHEN...From Midnight tonight to 9 AM CDT Wednesday. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ MOZ072>075-084-085-099-031200- /O.CON.KLSX.FZ.A.0002.211104T0600Z-211104T1400Z/ Crawford MO-Washington MO-Saint Francois MO-Sainte Genevieve MO- Iron MO-Madison MO-Reynolds MO- Including the cities of Farmington 204 PM 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...Crawford MO, Washington MO, Iron MO, Madison MO, Reynolds MO, Saint Francois MO and Sainte Genevieve MO Counties. * 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. && $$ Glass
1 follow-up statement
285 WWUS73 KLSX 030814 NPWLSX URGENT - WEATHER MESSAGE National Weather Service St Louis MO 314 AM CDT Wed Nov 3 2021 ILZ079-032315- /O.UPG.KLSX.FZ.A.0002.211104T0600Z-211104T1400Z/ /O.NEW.KLSX.FZ.W.0008.211104T0600Z-211104T1400Z/ /O.CON.KLSX.FZ.W.0007.000000T0000Z-211103T1400Z/ Randolph IL- Including the cities of Chester and Sparta 314 AM CDT Wed Nov 3 2021 ...FREEZE WARNING REMAINS IN EFFECT UNTIL 9 AM CDT THIS MORNING... ...FREEZE WARNING IN EFFECT FROM 1 AM TO 9 AM CDT THURSDAY... * WHAT...For the first Freeze Warning, sub-freezing temperatures as low as 29 expected. For the second Freeze Warning, sub-freezing temperatures as low as 31. * WHERE...Randolph IL County. * WHEN...For the first Freeze Warning, from 1 AM to 9 AM CDT Thursday. For the second Freeze Warning, until 9 AM CDT this morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ 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
The office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Nov 2, 3:25 AM CDT | Freeze Watch | LSX | Crawford, Iron, Madison, Reynolds, Sainte Genevieve, Saint Francois and 1 more | 24 hr |
| Nov 2, 9:37 AM CDT | River Flood Warning | LSX | Pike, Scott | 5 days |
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.