Alert archive / Illinois / Special Weather Statements in 2018

Special Weather Statement, NWS Lincoln, IL

June 11, 2018Sangamon County, Illinois

NWS Lincoln, IL issued this special weather statement at Jun 11, 2018, 4:05 AM CDT for Sangamon County, Illinois. It was in force for 55 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 11, 2018, 4:05 AM CDT (09:05 UTC)
Expired: Jun 11, 2018, 5:00 AM CDT
In force: 55 min
Issued by: NWS Lincoln, IL

County Sangamon County, IL

The radar

The Lincoln radar (KILX), 59 km from the middle of the area, began a volume at 09:08 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 00:00Z, 9.1 hours before the alert went out and 117 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: 407 J/kg
Mixed-layer CIN: -200 J/kg
Mixed-layer LCL: 1018 m above ground
0-6 km bulk shear: 21 kt
0-1 km storm-relative helicity: 40 m²/s²
0-3 km storm-relative helicity: 124 m²/s²
Significant tornado parameter: -0.0
Supercell composite: -0.8

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Lincoln, IL wrote its last area forecast discussion before this special weather statement went out at Jun 11, 4:00 AM CDT, 5 minutes earlier.

Area forecast discussion, Jun 11, 4:00 AM CDT, 5 minutes before

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Hazardous weather outlook, Jun 10, 3:38 PM CDT, 12 hours 27 minutes before

Hazardous Weather Outlook
National Weather Service Lincoln IL
338 PM CDT Sun Jun 10 2018

ILZ040>057-061>063-066>068-071>073-111100-
Cass-Champaign-Christian-Clark-Clay-Coles-Crawford-Cumberland-
De Witt-Douglas-Edgar-Effingham-Jasper-Lawrence-Logan-Macon-Mason-
Menard-Morgan-Moultrie-Piatt-Richland-Sangamon-Schuyler-Scott-
Shelby-Vermilion-
338 PM CDT Sun Jun 10 2018

This Hazardous Weather Outlook is for portions of central
Illinois, east central Illinois, southeast Illinois and west
central Illinois.

.DAY ONE...TONIGHT...

Strong to severe storms will continue across portions of central
and southeast Illinois this evening. Damaging wind and hail will
be the primary severe threat, mainly along and south of I-72
through Danville. Locally heavy rains and frequent lightning will
also be a risk with any thunderstorm.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY...

A typical summer-time pattern is expected to continue through
Tuesday with daily chances for thunderstorms. There is a marginal
risk for strong to locally severe thunderstorms Monday afternoon
and evening. There is a chance of thunderstorms again from late
Wednesday night through Friday morning, and overnight Friday night
into Saturday.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed til 8 pm.

ILZ027>031-036>038-111100-
Fulton-Knox-Marshall-McLean-Peoria-Stark-Tazewell-Woodford-
338 PM CDT Sun Jun 10 2018

This Hazardous Weather Outlook is for portions of central
Illinois and west central Illinois.

.DAY ONE...TONIGHT...

Scattered thunderstorms are still possible this evening across
parts of central Illinois. There is a marginal risk that some of
the storms could become severe, however organized severe weather
is not expected. Stronger storms could have hail and gusty winds,
along with locally heavy rains and frequent lightning.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY...

A typical summer-time pattern is expected to continue through
Tuesday with daily chances for thunderstorms. There is a marginal
risk for strong to locally severe thunderstorms Monday afternoon
and evening. There is a chance of thunderstorms again from late
Wednesday night through Friday morning, and overnight Friday night
into Saturday.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed later this evening.

Auten

In the hours before

Special weather statement, Jun 10, 11:41 PM CDT, 4 hours 24 minutes before

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Special weather statement, Jun 11, 12:35 AM CDT, 3 hours 30 minutes before

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Special weather statement, Jun 11, 12:53 AM CDT, 3 hours 12 minutes before

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Local storm report, Jun 11, 1:54 AM CDT, 2 hours 11 minutes before

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Special weather statement, Jun 11, 3:01 AM CDT, 1 hour 4 minutes before

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Special weather statement, Jun 11, 4:05 AM CDT, 0 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 10, 7:30 PM CDT	Flash Flood Watch	ILX	Cass, Christian, Clark, Clay, Coles, Crawford and 13 more	14 hr
Jun 10, 8:38 PM CDT	River Flood Warning	ILX	Vermilion	24 hr
Jun 10, 10:37 PM CDT	Special Weather Statement	ILX	Morgan	38 min
Jun 10, 11:41 PM CDT	Special Weather Statement	ILX	Christian	49 min
Jun 11, 12:35 AM CDT	Special Weather Statement	ILX	Shelby	40 min
Jun 11, 12:53 AM CDT	Special Weather Statement	ILX	Sangamon	52 min
Jun 11, 2:17 AM CDT	Areal Flood Advisory	ILX	Cass, Christian, Morgan, Sangamon	6 hr
Jun 11, 2:35 AM CDT	Flash Flood Warning	ILX	Morgan, Sangamon	5 hr
Jun 11, 3:01 AM CDT	Special Weather Statement	ILX	Cass	44 min
Jun 11, 3:10 AM CDT	Flash Flood Warning	ILX	Christian, Moultrie, Shelby	6 hr
Jun 11, 9:05 AM CDT	Areal Flood Warning	ILX	Christian, Shelby	3 hr
Jun 11, 11:07 AM CDT	River Flood Warning	ILX	Crawford, Jasper	5 days
Jun 11, 11:07 AM CDT	River Flood Warning	ILX	Lawrence	9 days
Jun 11, 2:57 PM CDT	Flash Flood Watch	ILX	Cass, Christian, Clark, Clay, Coles, Crawford and 13 more	21 hr
Jun 11, 5:57 PM CDT	Special Weather Statement	ILX	Shelby	48 min
Jun 11, 6:08 PM CDT	Severe Thunderstorm Warning	ILX	Shelby	52 min
Jun 11, 6:14 PM CDT	Severe Thunderstorm Warning	ILX	Clay, Richland	46 min

Nearby

Special Weather Statements in Illinois, 2018 Every special weather statement in 2018

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.