Alert archive / Illinois / Heat Advisories in 2015

Heat Advisory 1, NWS Lincoln, IL

July 12, 201527 counties in Illinois

NWS Lincoln, IL issued this heat advisory at Jul 12, 2015, 3:14 PM CDT for 27 counties in Illinois. It took effect at Jul 13, 2015, 12:00 PM CDT. It was in force for 8 hr.

The area

The counties it named.

The facts

Issued: Jul 12, 2015, 3:14 PM CDT (20:14 UTC)
In effect from: Jul 13, 2015, 12:00 PM CDT
Expired: Jul 13, 2015, 8:00 PM CDT
In force: 8 hr
Issued by: NWS Lincoln, IL

All 27 counties

Cass County, IL, Champaign County, IL, Christian County, IL, Coles County, IL, Cumberland County, IL, DeWitt County, IL, Douglas County, IL, Effingham County, IL, Fulton County, IL, Knox County, IL, Logan County, IL, Macon County, IL, Marshall County, IL, Mason County, IL, McLean County, IL, Menard County, IL, Morgan County, IL, Moultrie County, IL, Peoria County, IL, Piatt County, IL, Sangamon County, IL, Schuyler County, IL, Scott County, IL, Shelby County, IL, Stark County, IL, Tazewell County, IL, Woodford County, IL

The radar

The Lincoln radar (KILX), 8 km from the middle of the area, began a volume at 20:17 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, 8.2 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: 606 J/kg
Mixed-layer CIN: -145 J/kg
Mixed-layer LCL: 877 m above ground
0-6 km bulk shear: 17 kt
0-1 km storm-relative helicity: 79 m²/s²
0-3 km storm-relative helicity: 65 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this heat advisory 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 heat advisory went out at Jul 12, 2:52 PM CDT, 22 minutes earlier.

Area forecast discussion, Jul 12, 2:52 PM CDT, 22 minutes before

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Hazardous weather outlook, Jul 12, 11:52 AM CDT, 3 hours 22 minutes before

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In the hours before

Local storm report, Jul 12, 11:07 AM CDT, 4 hours 7 minutes before

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Local storm report, Jul 12, 11:08 AM CDT, 4 hours 6 minutes before

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Local storm report, Jul 12, 11:58 AM CDT, 3 hours 16 minutes before

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      <h1 id="headline">This service is currently unavailable.</h1>
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The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 11, 7:29 PM CDT	Severe Thunderstorm Warning	ILX	Morgan, Scott	31 min
Jul 11, 7:55 PM CDT	Areal Flood Advisory	ILX	DeWitt, Logan, Macon, Mason, Menard	6 hr
Jul 11, 7:59 PM CDT	Flash Flood Warning	ILX	Morgan, Scott	6 hr
Jul 11, 10:09 PM CDT	Severe Thunderstorm Warning	ILX	Macon, Moultrie, Piatt	66 min
Jul 11, 11:56 PM CDT	Flash Flood Warning	ILX	Coles, Douglas, Moultrie	3 hr
Jul 12, 1:12 AM CDT	River Flood Warning	ILX	Fulton, Knox	37 hr
Jul 12, 1:23 AM CDT	River Flood Warning	ILX	Mason, Menard	58 hr
Jul 12, 2:00 AM CDT	Areal Flood Warning	ILX	Morgan, Scott	9 hr
Jul 12, 10:01 AM CDT	River Flood Warning	ILX	Fulton	33 hr
Jul 12, 3:27 PM CDT	Flash Flood Watch	ILX	Champaign, Clark, Clay, Coles, Crawford, Cumberland and 13 more	31 hr

Nearby

Heat Advisories in Illinois, 2015 Every heat advisory in 2015

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.