Alert archive / Illinois / Flash Flood Warnings in 2018

Flash Flood Warning 21, NWS Lincoln, IL

July 14, 2018Fulton County, Illinois

NWS Lincoln, IL issued this flash flood warning at Jul 14, 2018, 5:50 PM CDT for Fulton County, Illinois. It was in force for 112 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Jul 14, 2018, 5:50 PM CDT (22:50 UTC)
Expired: Jul 14, 2018, 7:42 PM CDT
In force: 112 min
Issued by: NWS Lincoln, IL
Area: Storm-based polygon
Flood severity: None

County Fulton County, IL

The radar

The Lincoln radar (KILX), 91 km from the middle of the area, began a volume at 22:53 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.

What was reported inside it

Time	Report	Where	Remark
Jul 14, 6:00 PM CDT	HEAVY RAIN 3.45	Avon, IL	SINCE 6AM.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Davenport, (KDVN), launched 12:00Z, 10.8 hours before the alert went out and 113 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: 382 J/kg
Mixed-layer CIN: -86 J/kg
Mixed-layer LCL: 938 m above ground
0-6 km bulk shear: 25 kt
0-1 km storm-relative helicity: 9 m²/s²
0-3 km storm-relative helicity: 105 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.5

Open this sounding in Storm Lab

The text

As transmitted.

638 
WGUS53 KILX 142250
FFWILX
ILC057-150145-
/O.NEW.KILX.FF.W.0021.180714T2250Z-180715T0145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Lincoln IL
550 PM CDT SAT JUL 14 2018

The National Weather Service in Lincoln has issued a

* Flash Flood Warning for...
  Northern Fulton County in west central Illinois...

* Until 845 PM CDT.

* At 550 PM CDT, Doppler radar indicated thunderstorms producing
  heavy rain across the warned area. Flash flooding is expected to
  begin shortly.

* Some locations that will experience flooding include...
  Canton, Farmington, Avon, Fairview, London Mills, Norris, Marietta,
  Ellisville, Fiatt and Middle Grove.

LAT...LON 4071 9044 4071 8999 4062 8999 4052 8997
      4049 9045

$$

Shimon

1 follow-up statement

341 
WGUS73 KILX 150042 RRA
FFSILX

Flash Flood Statement
National Weather Service Lincoln IL
742 PM CDT SAT JUL 14 2018

ILC057-150052-
/O.CAN.KILX.FF.W.0021.000000T0000Z-180715T0145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Fulton-
742 PM CDT SAT JUL 14 2018

...THE FLASH FLOOD WARNING FOR NORTHERN FULTON COUNTY IS CANCELLED...

Flood waters have receded. Flooding is no longer expected to pose a
threat. Please continue to heed any remaining road closures.

LAT...LON 4071 9044 4071 8999 4062 8999 4052 8997
      4049 9045

$$

Shimon

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 13, 7:48 PM CDT	Special Weather Statement	ILX	Knox	57 min
Jul 13, 8:43 PM CDT	Special Weather Statement	ILX	Knox	62 min
Jul 13, 9:43 PM CDT	Special Weather Statement	ILX	Stark	62 min
Jul 14, 3:09 AM CDT	Heat Advisory	ILX	Cass, Champaign, Christian, Clark, Clay, Coles and 20 more	13 hr
Jul 14, 9:04 AM CDT	Special Weather Statement	ILX	McLean	26 min
Jul 14, 9:21 AM CDT	Severe Thunderstorm Warning	ILX	Champaign, McLean, Vermilion	39 min
Jul 14, 9:58 AM CDT	Severe Thunderstorm Warning	ILX	Vermilion	32 min
Jul 14, 10:07 AM CDT	Special Weather Statement	ILX	Vermilion	38 min
Jul 14, 11:02 AM CDT	Special Weather Statement	ILX	Piatt	28 min
Jul 14, 11:46 AM CDT	Special Weather Statement	ILX	Douglas	29 min
Jul 14, 12:36 PM CDT	Special Weather Statement	ILX	Coles	24 min
Jul 14, 1:13 PM CDT	Special Weather Statement	ILX	Shelby	32 min
Jul 14, 1:45 PM CDT	Special Weather Statement	ILX	Effingham	30 min
Jul 14, 1:55 PM CDT	Severe Thunderstorm Warning	ILX	Clay, Effingham	50 min
Jul 14, 2:09 PM CDT	Severe Thunderstorm Warning	ILX	Clark, Crawford, Cumberland, Jasper	51 min
Jul 14, 2:23 PM CDT	Special Weather Statement	ILX	Clay, Cumberland, Effingham, Jasper, Richland	67 min
Jul 14, 2:37 PM CDT	Severe Thunderstorm Warning	ILX	Clay, Effingham, Jasper, Richland	38 min
Jul 14, 3:23 PM CDT	Severe Thunderstorm Warning	ILX	Crawford, Jasper, Lawrence, Richland	52 min
Jul 14, 3:59 PM CDT	Special Weather Statement	ILX	Cass, Morgan, Schuyler, Scott	61 min
Jul 14, 4:11 PM CDT	Severe Thunderstorm Warning	ILX	Fulton, Schuyler	33 min
Jul 14, 4:25 PM CDT	Severe Thunderstorm Warning	ILX	Cass, Menard, Morgan, Sangamon	50 min
Jul 14, 4:41 PM CDT	Severe Thunderstorm Warning	ILX	Cass, Mason, Menard, Morgan, Sangamon	44 min
Jul 14, 5:01 PM CDT	Flash Flood Warning	ILX	Cass, Mason, Menard, Schuyler	3 hr

Nearby

Flash Flood Warnings in Illinois, 2018 Every flash flood warning 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.