Alert archive / Illinois / Frost Advisories in 2013

Frost Advisory 1, NWS Lincoln, IL

April 19, 20136 counties in Illinois

NWS Lincoln, IL issued this frost advisory at Apr 19, 2013, 2:14 PM CDT for 6 counties in Illinois. It took effect at Apr 20, 2013, 3:00 AM CDT. It was in force for 4 hr.

The area

The counties it named.

The facts

Issued: Apr 19, 2013, 2:14 PM CDT (19:14 UTC)
In effect from: Apr 20, 2013, 3:00 AM CDT
Expired: Apr 20, 2013, 7:00 AM CDT
In force: 4 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 19:12 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, 7.2 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-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: 4 J/kg
Mixed-layer CIN: -1 J/kg
Mixed-layer LCL: 848 m above ground
0-6 km bulk shear: 101 kt
0-1 km storm-relative helicity: -198 m²/s²
0-3 km storm-relative helicity: -35 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 frost 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 frost advisory went out at Apr 19, 1:03 PM CDT, 1 hour 11 minutes earlier.

Area forecast discussion, Apr 19, 1:03 PM CDT, 1 hour 11 minutes before

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Hazardous weather outlook, Apr 19, 11:18 AM CDT, 2 hours 56 minutes before

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In the hours before

Local storm report, Apr 19, 8:48 AM CDT, 5 hours 26 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LINCOLN IL
848 AM CDT FRI APR 19 2013

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0700 AM     HEAVY RAIN       CHATHAM                 39.67N 89.70W
04/19/2013  M2.12 INCH       SANGAMON           IL   NWS EMPLOYEE

&&

JRP

Local storm report, Apr 19, 9:21 AM CDT, 4 hours 53 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LINCOLN IL
921 AM CDT FRI APR 19 2013

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0530 AM     HEAVY RAIN       2 E JACKSONVILLE        39.73N 90.20W
04/19/2013  M1.03 INCH       MORGAN             IL   CO-OP OBSERVER

0700 AM     HEAVY RAIN       CLINTON                 40.15N 88.96W
04/19/2013  M2.49 INCH       DE WITT            IL   CO-OP OBSERVER

0700 AM     HEAVY RAIN       SHERMAN                 39.89N 89.61W
04/19/2013  M1.23 INCH       SANGAMON           IL   CO-OP OBSERVER

0700 AM     HEAVY RAIN       PARIS                   39.62N 87.69W
04/19/2013  M1.80 INCH       EDGAR              IL   CO-OP OBSERVER

0800 AM     HEAVY RAIN       URBANA                  40.11N 88.21W
04/19/2013  M2.12 INCH       CHAMPAIGN          IL   CO-OP OBSERVER

&&

JRP

Local storm report, Apr 19, 10:48 AM CDT, 3 hours 26 minutes before

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Local storm report, Apr 19, 10:56 AM CDT, 3 hours 18 minutes before

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Local storm report, Apr 19, 10:58 AM CDT, 3 hours 16 minutes before

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Local storm report, Apr 19, 11:01 AM CDT, 3 hours 13 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
Apr 18, 10:14 PM CDT	Flash Flood Warning	ILX	Vermilion	11 hr
Apr 19, 8:14 AM CDT	Areal Flood Warning	ILX	Champaign, Coles, Cumberland, Douglas, Effingham, Moultrie and 2 more	24 hr
Apr 19, 10:39 AM CDT	Flash Flood Watch	ILX	Sangamon	19 hr
Apr 19, 2:14 PM CDT	Freeze Warning	ILX	Cass, Champaign, Christian, Clark, Coles, Cumberland and 15 more	17 hr

Nearby

Frost Advisories in Illinois, 2013 Every frost advisory in 2013

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.