Alert archive / Illinois / Freeze Warnings in 2021

Freeze Warning 3, NWS Lincoln, IL

April 2, 20216 counties in Illinois

NWS Lincoln, IL issued this freeze warning at Apr 2, 2021, 2:24 PM CDT for 6 counties in Illinois. It took effect at Apr 3, 2021, 1:00 AM CDT. It was in force for 7 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
Apr 2, 2021, 2:24 PM CDT (19:24 UTC)
In effect from
Apr 3, 2021, 1:00 AM CDT
Expired
Apr 3, 2021, 8:00 AM CDT
In force
7 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 19:29 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, 7.4 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 2021-04-02Temperature 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 2021-04-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 5 square meters per square second.1939587897Sfc1 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
1836 m above ground
0-6 km bulk shear
53 kt
0-1 km storm-relative helicity
5 m²/s²
0-3 km storm-relative helicity
87 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

862 
WWUS73 KILX 021924
NPWILX

URGENT - WEATHER MESSAGE
National Weather Service Lincoln IL
224 PM CDT Fri Apr 2 2021

ILZ066>068-071>073-031300-
/O.NEW.KILX.FZ.W.0003.210403T0600Z-210403T1300Z/
Effingham-Jasper-Crawford-Clay-Richland-Lawrence-
Including the cities of Effingham, Newton, Robinson, Flora, 
Olney, and Lawrenceville
224 PM CDT Fri Apr 2 2021

...FREEZE WARNING IN EFFECT FROM 1 AM TO 8 AM CDT SATURDAY...

* WHAT...Sub-freezing temperatures overnight with lows in the
  lower 30s expected over southeast Illinois.

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

* WHEN...From 1 AM to 8 AM CDT Saturday.

* IMPACTS...Frost and freeze conditions will kill 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.

&&

$$

07
2 follow-up statements
670 
WWUS73 KILX 030809
NPWILX

URGENT - WEATHER MESSAGE
National Weather Service Lincoln IL
309 AM CDT Sat Apr 3 2021

ILZ066>068-071>073-031300-
/O.CON.KILX.FZ.W.0003.000000T0000Z-210403T1300Z/
Effingham-Jasper-Crawford-Clay-Richland-Lawrence-
Including the cities of Effingham, Newton, Robinson, Flora, 
Olney, and Lawrenceville
309 AM CDT Sat Apr 3 2021

...FREEZE WARNING REMAINS IN EFFECT UNTIL 8 AM CDT THIS MORNING...

* WHAT...Sub-freezing temperatures overnight with lows in the 
  lower 30s expected over southeast Illinois.

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

* WHEN...From 1 AM to 8 AM CDT Saturday.

* IMPACTS...Frost and freeze conditions will kill 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
803 
WWUS73 KILX 031247
NPWILX

URGENT - WEATHER MESSAGE
National Weather Service Lincoln IL
747 AM CDT Sat Apr 3 2021

ILZ066>068-071>073-031400-
/O.EXP.KILX.FZ.W.0003.000000T0000Z-210403T1300Z/
Effingham-Jasper-Crawford-Clay-Richland-Lawrence-
Including the cities of Effingham, Newton, Robinson, Flora, 
Olney, and Lawrenceville
747 AM CDT Sat Apr 3 2021

...FREEZE WARNING WILL EXPIRE AT 8 AM CDT THIS MORNING...

Temperatures are rising above freezing this morning, therefore 
the freeze warning will be allowed to expire at 8 AM. Freezing
temperatures are not expected for at least the next several days.

$$

37

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.