Alert archive / Illinois / Special Weather Statements in 2017
Special Weather Statement, NWS Lincoln, IL
NWS Lincoln, IL issued this special weather statement at Jun 30, 2017, 8:21 PM CDT for Sangamon 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
- Jun 30, 2017, 8:21 PM CDT (01:21 UTC)
- Expired
- Jun 30, 2017, 8:45 PM CDT
- In force
- 24 min
- Issued by
- NWS Lincoln, IL
County Sangamon County, IL
The radar
The Lincoln radar (KILX), 44 km from the middle of the area, began a volume at 01:23 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 00:00Z, 1.4 hours before the alert went out and 89 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
- 470 J/kg
- Mixed-layer CIN
- -28 J/kg
- Mixed-layer LCL
- 1140 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- -22 m²/s²
- 0-3 km storm-relative helicity
- 14 m²/s²
- Significant tornado parameter
- -0.0
- Supercell composite
- -0.5
The text
As transmitted.
420 WWUS83 KILX 010121 SPSILX Special Weather Statement National Weather Service Lincoln IL 821 PM CDT FRI JUN 30 2017 ILZ048-051>053-010145- Sangamon-Macon-Menard-Christian- 821 PM CDT FRI JUN 30 2017 ...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN CHRISTIAN...CENTRAL SANGAMON AND WEST CENTRAL MACON COUNTIES UNTIL 845 PM CDT... At 821 PM CDT, Doppler radar was tracking a strong thunderstorm near Springfield, moving east at 25 mph. Small hail and wind gusts up to 50 mph will be possible with this storm. Locations impacted include... Springfield, Sherman, Rochester, Riverton, Edinburg, Illiopolis, Niantic, Mechanicsburg, Mount Auburn, Jerome, Southern View, Leland Grove, Grandview, Spaulding, Dawson, Buffalo, Berry, Clear Lake, Capital Airport and Roby. This includes the following highways... Interstate 55 between mile markers 91 and 105. Interstate 72 between mile markers 92 and 127. LAT...LON 3975 8977 3993 8972 3987 8915 3961 8923 TIME...MOT...LOC 0121Z 283DEG 22KT 3983 8965 $$ 37
Nearby
Special Weather Statements in Illinois, 2017Every special weather statement in 2017
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.