Alert archive / Illinois / Special Weather Statements in 2021

Special Weather Statement, NWS Lincoln, IL

August 8, 2021McLean County, Illinois

NWS Lincoln, IL issued this special weather statement at Aug 8, 2021, 2:21 PM CDT for McLean County, Illinois. It was in force for 24 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Aug 8, 2021, 2:21 PM CDT (19:21 UTC)
Expired: Aug 8, 2021, 2:45 PM CDT
In force: 24 min
Issued by: NWS Lincoln, IL
Hail: 0.50 in
Wind: 40

County McLean County, IL

The radar

The Lincoln radar (KILX), 60 km from the middle of the area, began a volume at 19:21 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 62 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 310 J/kg
Mixed-layer CIN: -97 J/kg
Mixed-layer LCL: 1165 m above ground
0-6 km bulk shear: 17 kt
0-1 km storm-relative helicity: -25 m²/s²
0-3 km storm-relative helicity: -3 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

250 
WWUS83 KILX 081921
SPSILX

Special Weather Statement
National Weather Service Lincoln IL
221 PM CDT Sun Aug 8 2021
 
ILZ031-038-081945-
Woodford-McLean-
221 PM CDT Sun Aug 8 2021

...Strong thunderstorms will impact portions of southeastern Woodford
and western McLean Counties through 245 PM CDT...

At 220 PM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from near El Paso to McLean. Movement was northeast
at 20 mph.

HAZARD...Winds in excess of 40 mph and half inch hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around 
         unsecured objects. Minor damage to outdoor objects is 
         possible.

Strong thunderstorms will be near...
  Hudson around 225 PM CDT.
  El Paso around 230 PM CDT.

Other locations in the path of these storms include Bloomington and
Gridley.

This includes the following highways...
 Interstate 39 between mile markers 0 and 13.
 Interstate 55 between mile markers 143 and 169.
 Interstate 74 between mile markers 123 and 136.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building. 

These storms may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

&&

LAT...LON 4075 8893 4075 8883 4029 8903 4029 8923
      4076 8901 4076 8893
TIME...MOT...LOC 1920Z 226DEG 16KT 4069 8901 4031 8918 

MAX HAIL SIZE...0.50 IN
MAX WIND GUST...40 MPH

$$

SB

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 8, 3:30 PM CDT	Special Weather Statement	ILX	McLean	30 min
Aug 8, 4:29 PM CDT	Special Weather Statement	ILX	Morgan	31 min
Aug 8, 4:45 PM CDT	Areal Flood Advisory	ILX	McLean	2 hr
Aug 8, 4:54 PM CDT	Special Weather Statement	ILX	Menard	36 min
Aug 8, 5:02 PM CDT	Special Weather Statement	ILX	Woodford	28 min
Aug 8, 5:05 PM CDT	Severe Thunderstorm Warning	ILX	Logan, Mason, Menard	25 min
Aug 8, 5:14 PM CDT	Severe Thunderstorm Warning	ILX	McLean, Tazewell, Woodford	46 min
Aug 8, 5:29 PM CDT	Special Weather Statement	ILX	Sangamon	31 min
Aug 8, 5:35 PM CDT	Flash Flood Warning	ILX	McLean	3 hr
Aug 8, 5:46 PM CDT	Special Weather Statement	ILX	Sangamon	29 min

Nearby

Special Weather Statements in Illinois, 2021 Every special weather statement 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.