Alert archive / Illinois / Freeze Warnings in 2021

Freeze Warning 2, NWS Lincoln, IL

March 31, 20216 counties in Illinois

NWS Lincoln, IL issued this freeze warning at Mar 31, 2021, 2:38 PM CDT for 6 counties in Illinois. It took effect at Apr 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
Mar 31, 2021, 2:38 PM CDT (19:38 UTC)
In effect from
Apr 2, 2021, 12:00 AM CDT
Expired
Apr 2, 2021, 9:00 AM CDT
In force
9 hr
Issued by
NWS Lincoln, IL

Counties Clay County, IL, Crawford County, IL, Effingham County, IL, Jasper County, IL, Lawrence County, IL, Richland County, IL

The radar

The Evansville,IN radar (KVWX), 77 km from the middle of the area, began a volume at 19:42 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, 7.6 hours before the alert went out and 147 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.

Skew-T log-pSkew-T log-p diagram, Lincoln, IL at 12:00Z on 2021-03-31Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Lincoln, IL at 12:00Z on 2021-03-31The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -266 square meters per square second.1939587897117136Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1759 m above ground
0-6 km bulk shear
104 kt
0-1 km storm-relative helicity
-266 m²/s²
0-3 km storm-relative helicity
-176 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

711 
WWUS73 KILX 311938
NPWILX

URGENT - WEATHER MESSAGE
National Weather Service Lincoln IL
238 PM CDT Wed Mar 31 2021

ILZ071>073-011000-
/O.UPG.KILX.FZ.A.0001.210402T0500Z-210402T1400Z/
/O.NEW.KILX.FZ.W.0002.210402T0500Z-210402T1400Z/
/O.CON.KILX.FZ.W.0001.210401T0600Z-210401T1400Z/
Clay-Richland-Lawrence-
Including the cities of Flora, Olney, and Lawrenceville
238 PM CDT Wed Mar 31 2021

...FREEZE WARNING REMAINS IN EFFECT FROM 1 AM TO 9 AM CDT
THURSDAY...
...FREEZE WARNING IN EFFECT FROM MIDNIGHT THURSDAY NIGHT TO 9 AM
CDT FRIDAY...

The National Weather Service in Lincoln has issued a Freeze
Warning, which is in effect from midnight Thursday night to 9 AM
CDT Friday. The Freeze Watch is no longer in effect. 

* WHAT...Sub-freezing temperatures in the mid 20s tonight and low
  to mid 20s Thursday night.

* WHERE...Clay, Richland, and Lawrence Counties.

* WHEN...1 AM to 9 AM CDT Thursday and again 1 AM to 9 AM CDT
  Friday. 

* Impacts...Frost and freeze conditions will kill crops, other 
  sensitive vegetation and possibly damage unprotected outdoor 
  plumbing. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold. To prevent
freezing and possible bursting of outdoor water pipes they should
be wrapped, drained, or allowed to drip slowly. Those that have
in-ground sprinkler systems should drain them and cover above-
ground pipes to protect them from freezing.

A Freeze Warning means sub-freezing temperatures are imminent or
highly likely. These conditions will kill crops and other
sensitive vegetation.

&&

$$

Deubelbeiss
6 follow-up statements
893 
WWUS73 KILX 311941 CCA
NPWILX

URGENT - WEATHER MESSAGE...CORRECTED
National Weather Service Lincoln IL
241 PM CDT Wed Mar 31 2021

ILZ071>073-011000-
/O.UPG.KILX.FZ.A.0001.210402T0500Z-210402T1400Z/
/O.COR.KILX.FZ.W.0002.210402T0500Z-210402T1400Z/
/O.COR.KILX.FZ.W.0001.210401T0600Z-210401T1400Z/
Clay-Richland-Lawrence-
Including the cities of Flora, Olney, and Lawrenceville
241 PM CDT Wed Mar 31 2021

...FREEZE WARNING REMAINS IN EFFECT FROM 1 AM TO 9 AM CDT
THURSDAY...
...FREEZE WARNING IN EFFECT FROM MIDNIGHT THURSDAY NIGHT TO 9 AM
CDT FRIDAY...

The National Weather Service in Lincoln has issued a Freeze
Warning, which is in effect from midnight Thursday night to 9 AM
CDT Friday. The Freeze Watch is no longer in effect. 

* WHAT...Sub-freezing temperatures in the mid 20s tonight and low
  to mid 20s Thursday night.

* WHERE...Clay, Richland, and Lawrence Counties.

* WHEN...1 AM to 9 AM CDT Thursday and 12 AM to 9 AM CDT Friday. 

* Impacts...Frost and freeze conditions will kill crops, other 
  sensitive vegetation and possibly damage unprotected outdoor 
  plumbing. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold. To prevent
freezing and possible bursting of outdoor water pipes they should
be wrapped, drained, or allowed to drip slowly. Those that have
in-ground sprinkler systems should drain them and cover above-
ground pipes to protect them from freezing.

A Freeze Warning means sub-freezing temperatures are imminent or
highly likely. These conditions will kill crops and other
sensitive vegetation.

&&

$$

Deubelbeiss
084 
WWUS73 KILX 010759
NPWILX

URGENT - WEATHER MESSAGE
National Weather Service Lincoln IL
259 AM CDT Thu Apr 1 2021

ILZ066>068-011600-
/O.EXA.KILX.FZ.W.0002.210402T0500Z-210402T1400Z/
Effingham-Jasper-Crawford-
Including the cities of Effingham, Newton, and Robinson
259 AM CDT Thu Apr 1 2021

...FREEZE WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM CDT
FRIDAY...

* WHAT...Sub-freezing temperatures as low as 21 expected.

* WHERE...Effingham, Jasper and Crawford Counties.

* WHEN...12 AM to 9 AM CDT Friday.

* IMPACTS...Frost and freeze conditions will kill crops, other
  sensitive vegetation and possibly damage unprotected outdoor
  plumbing.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold. To prevent
freezing and possible bursting of outdoor water pipes they should
be wrapped, drained, or allowed to drip slowly. Those that have
in-ground sprinkler systems should drain them and cover above-
ground pipes to protect them from freezing.

A Freeze warning means sub-freezing temperatures are imminent or
highly likely. These conditions will kill crops and other
sensitive vegetation. 

&&

$$

ILZ071>073-011600-
/O.CON.KILX.FZ.W.0001.000000T0000Z-210401T1400Z/
/O.CON.KILX.FZ.W.0002.210402T0500Z-210402T1400Z/
Clay-Richland-Lawrence-
Including the cities of Flora, Olney, and Lawrenceville
259 AM CDT Thu Apr 1 2021

...FREEZE WARNING REMAINS IN EFFECT UNTIL 9 AM CDT THIS MORNING...
...FREEZE WARNING REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM
CDT FRIDAY...

* WHAT...Sub-freezing temperatures in the mid 20s tonight and 
  low to mid 20s Thursday night.

* WHERE...Clay, Richland, and Lawrence Counties.

* WHEN...1 AM to 9 AM CDT Thursday and 12 AM to 9 AM CDT Friday.

* IMPACTS...Frost and freeze conditions will kill crops, other 
  sensitive vegetation and possibly damage unprotected outdoor 
  plumbing.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold. To prevent
freezing and possible bursting of outdoor water pipes they should
be wrapped, drained, or allowed to drip slowly. Those that have
in-ground sprinkler systems should drain them and cover above-
ground pipes to protect them from freezing.

A Freeze Warning means sub-freezing temperatures are imminent or
highly likely. These conditions will kill crops and other
sensitive vegetation.

&&

$$

Erwin
891 
WWUS73 KILX 011707
NPWILX

URGENT - WEATHER MESSAGE
National Weather Service Lincoln IL
1207 PM CDT Thu Apr 1 2021

ILZ066>068-071>073-020115-
/O.CON.KILX.FZ.W.0002.210402T0500Z-210402T1400Z/
Effingham-Jasper-Crawford-Clay-Richland-Lawrence-
Including the cities of Effingham, Newton, Robinson, Flora, 
Olney, and Lawrenceville
1207 PM CDT Thu Apr 1 2021

...FREEZE WARNING REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM
CDT FRIDAY...

* WHAT...Sub-freezing temperatures as low as 21 expected.

* WHERE...Effingham, Jasper, Crawford, Clay, Richland, and
  Lawrence Counties.

* WHEN...12 AM to 9 AM CDT Friday.

* IMPACTS...Frost and freeze conditions will kill crops, other 
  sensitive vegetation and possibly damage unprotected outdoor 
  plumbing.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold. To prevent
freezing and possible bursting of outdoor water pipes they should
be wrapped, drained, or allowed to drip slowly. Those that have
in-ground sprinkler systems should drain them and cover above-
ground pipes to protect them from freezing.

A Freeze warning means sub-freezing temperatures are imminent or
highly likely. These conditions will kill crops and other
sensitive vegetation.

&&

$$

Deubelbeiss
382 
WWUS73 KILX 012005
NPWILX

URGENT - WEATHER MESSAGE
National Weather Service Lincoln IL
305 PM CDT Thu Apr 1 2021

ILZ066>068-071>073-021000-
/O.CON.KILX.FZ.W.0002.210402T0500Z-210402T1400Z/
Effingham-Jasper-Crawford-Clay-Richland-Lawrence-
Including the cities of Effingham, Newton, Robinson, Flora, 
Olney, and Lawrenceville
305 PM CDT Thu Apr 1 2021

...FREEZE WARNING REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM
CDT FRIDAY...

* WHAT...Sub-freezing temperatures down to around 20 expected.

* WHERE...Jasper, Effingham, Richland, Lawrence, Clay and 
  Crawford Counties.

* WHEN...From midnight tonight to 9 AM CDT Friday.

* IMPACTS...Frost and freeze conditions will kill crops, other 
  sensitive vegetation and possibly damage unprotected outdoor 
  plumbing.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold. To prevent
freezing and possible bursting of outdoor water pipes they should
be wrapped, drained, or allowed to drip slowly. Those that have
in-ground sprinkler systems should drain them and cover above-
ground pipes to protect them from freezing.

&&

$$

Deubelbeiss
222 
WWUS73 KILX 020817
NPWILX

URGENT - WEATHER MESSAGE
National Weather Service Lincoln IL
317 AM CDT Fri Apr 2 2021

ILZ066>068-071>073-021400-
/O.CON.KILX.FZ.W.0002.000000T0000Z-210402T1400Z/
Effingham-Jasper-Crawford-Clay-Richland-Lawrence-
Including the cities of Effingham, Newton, Robinson, Flora, 
Olney, and Lawrenceville
317 AM CDT Fri Apr 2 2021

...FREEZE WARNING REMAINS IN EFFECT UNTIL 9 AM CDT THIS MORNING...

* WHAT...Sub-freezing temperatures down to around 20 expected.

* WHERE...Jasper, Effingham, Richland, Lawrence, Clay and 
  Crawford Counties.

* WHEN...From midnight tonight to 9 AM CDT Friday.

* IMPACTS...Frost and freeze conditions will kill crops, other
  sensitive vegetation and possibly damage unprotected outdoor
  plumbing.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold. To prevent
freezing and possible bursting of outdoor water pipes they should
be wrapped, drained, or allowed to drip slowly. Those that have
in-ground sprinkler systems should drain them and cover above-
ground pipes to protect them from freezing.

&&

$$

Erwin
795 
WWUS73 KILX 021359
NPWILX

URGENT - WEATHER MESSAGE
National Weather Service Lincoln IL
859 AM CDT Fri Apr 2 2021

ILZ066>068-071>073-021500-
/O.EXP.KILX.FZ.W.0002.000000T0000Z-210402T1400Z/
Effingham-Jasper-Crawford-Clay-Richland-Lawrence-
Including the cities of Effingham, Newton, Robinson, Flora, 
Olney, and Lawrenceville
859 AM CDT Fri Apr 2 2021

...FREEZE WARNING WILL EXPIRE AT 9 AM CDT THIS MORNING...

Temperatures are rising above freezing during mid morning across
central and southeast IL, hence the freeze warning is allowed to
expire at 9 am. Parts of eastern IL could see temperatures cooling
back toward freezing overnight into early Saturday morning. 

$$

07

The office that day

Everything else NWS Lincoln, IL issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Mar 31, 3:05 AM CDTFreeze WatchILXClay, Lawrence, Richland12 hr

Nearby

Freeze 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.