Alert archive / Illinois / Flash Flood Warnings in 2011

Flash Flood Warning 59, NWS Lincoln, IL

June 27, 20116 counties in Illinois

NWS Lincoln, IL issued this flash flood warning at Jun 27, 2011, 3:16 AM CDT for 6 counties in Illinois. It was in force for 6 hr. 3 reports 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: Jun 27, 2011, 3:16 AM CDT (08:16 UTC)
Expired: Jun 27, 2011, 9:30 AM CDT
In force: 6 hr
Issued by: NWS Lincoln, IL
Area: Storm-based polygon
Flood severity: None

Counties Fulton County, IL, Logan County, IL, Mason County, IL, Menard County, IL, Sangamon County, IL, Tazewell County, IL

The radar

The Lincoln radar (KILX), 18 km from the middle of the area, began a volume at 08:18 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
Jun 27, 6:00 AM CDT	HEAVY RAIN 1.5	1 N Mackinaw, IL
Jun 27, 6:00 AM CDT	HEAVY RAIN 1.79	Mount Pulaski, IL
Jun 27, 7:00 AM CDT	HEAVY RAIN 1.74	1 S Pekin, IL

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

The nearest sounding before it

Lincoln, IL (KILX), launched 00:00Z, 8.3 hours before the alert went out and 80 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: 611 J/kg
Mixed-layer CIN: -178 J/kg
Mixed-layer LCL: 767 m above ground
0-6 km bulk shear: 52 kt
0-1 km storm-relative helicity: 38 m²/s²
0-3 km storm-relative helicity: 169 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.3

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

652 
WGUS53 KILX 270816
FFWILX
ILC057-107-125-129-167-179-271430-
/O.NEW.KILX.FF.W.0059.110627T0816Z-110627T1430Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LINCOLN IL
316 AM CDT MON JUN 27 2011

THE NATIONAL WEATHER SERVICE IN LINCOLN HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  EAST CENTRAL FULTON COUNTY IN WEST CENTRAL ILLINOIS...
  LOGAN COUNTY IN CENTRAL ILLINOIS...
  MASON COUNTY IN CENTRAL ILLINOIS...
  MENARD COUNTY IN CENTRAL ILLINOIS...
  SANGAMON COUNTY IN CENTRAL ILLINOIS...
  TAZEWELL COUNTY IN CENTRAL ILLINOIS...

* UNTIL 930 AM CDT

* AT 316 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  SLOW MOVING THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE
  WARNED AREA. RAINFALL RATES OF 1 TO 2 INCHES PER HOUR WILL BE LIKELY
  WITH THE THUNDERSTORMS OVER THE NEXT HOUR OR TWO. 

* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
  OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  LINCOLN...MASON CITY...PEKIN...SPRINGFIELD...ARMINGTON...ATHENS...
  ATLANTA...AUBURN...BEASON...CHATHAM...CHESTNUT...CORNLAND...
  DELAVAN...DIVERNON...EASTON...ELKHART...EMDEN...GREEN VALLEY...
  GREENVIEW...HARTSBURG...HOPEDALE...ILLIOPOLIS...KILBOURNE...
  LOAMI...MACKINAW...MANITO...MARQUETTE HEIGHTS...MECHANICSBURG...
  MIDDLETOWN AND MINIER.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...HIGHWAYS AND UNDERPASSES. ADDITIONALLY...
COUNTRY ROADS AND FARMLANDS ALONG THE BANKS OF CREEKS...STREAMS AND
OTHER LOW LYING AREAS ARE SUBJECT TO FLOODING.

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY.

&&

LAT...LON 4061 8928 4028 8926 4026 8915 4000 8915
      3987 8922 3977 8931 3975 8942 3976 8943
      3969 8943 3964 8954 3954 8954 3952 8992
      4035 9006 4054 8988 4062 8997 4062 8987
      4052 8987 4055 8968 4063 8962

$$

SMITH

1 follow-up statement

249 
WGUS73 KILX 271426
FFSILX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LINCOLN IL
926 AM CDT MON JUN 27 2011

ILC057-107-125-129-167-179-271441-
/O.EXP.KILX.FF.W.0059.000000T0000Z-110627T1430Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
LOGAN IL-MASON IL-MENARD IL-SANGAMON IL-TAZEWELL IL-FULTON IL-
926 AM CDT MON JUN 27 2011

...THE FLASH FLOOD WARNING THAT WAS IN EFFECT FOR EAST CENTRAL
FULTON...TAZEWELL...SANGAMON...MENARD...MASON AND LOGAN COUNTIES WILL
BE ALLOWED TO EXPIRE AT 930 AM CDT...

EXCESS RUNOFF FROM HEAVY RAIN HAS ENDED OVER THE WARNED AREA. STREAMS
AND CREEKS IN THE WARNED AREA HAVE RECEDED OR WERE BEGINNING TO
RECEDE...ENDING THE FLOOD THREAT. IF FLOODING HAS BEEN OBSERVED...
PLEASE REPORT IT TO YOUR LOCAL LAW ENFORCEMENT AGENCY.

LAT...LON 4061 8928 4028 8926 4026 8915 4000 8915
      3987 8922 3977 8931 3975 8942 3976 8943
      3969 8943 3964 8954 3954 8954 3952 8992
      4035 9006 4054 8988 4062 8997 4062 8987
      4052 8987 4055 8968 4063 8962

$$

HJS

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 26, 9:23 PM CDT	Severe Thunderstorm Warning	ILX	Schuyler	52 min
Jun 26, 10:00 PM CDT	Special Weather Statement	ILX	Fulton, Knox	60 min
Jun 26, 10:11 PM CDT	Flash Flood Warning	ILX	Fulton, Schuyler	12 hr
Jun 26, 10:15 PM CDT	Severe Thunderstorm Warning	ILX	Schuyler	30 min
Jun 26, 10:32 PM CDT	Special Weather Statement	ILX	Cass	28 min
Jun 26, 10:46 PM CDT	Special Weather Statement	ILX	Mason, Peoria, Tazewell	59 min
Jun 26, 11:11 PM CDT	Severe Thunderstorm Warning	ILX	Logan, Mason, Peoria, Tazewell, Woodford	64 min
Jun 26, 11:21 PM CDT	Severe Thunderstorm Warning	ILX	Logan, Menard, Sangamon	54 min
Jun 26, 11:33 PM CDT	Severe Thunderstorm Warning	ILX	DeWitt, Logan, McLean, Tazewell, Woodford	57 min
Jun 27, 12:09 AM CDT	Severe Thunderstorm Warning	ILX	Christian, DeWitt, Macon, Moultrie, Piatt	66 min
Jun 27, 12:25 AM CDT	Severe Thunderstorm Warning	ILX	Champaign, Douglas, Edgar, Macon, Vermilion	65 min
Jun 27, 1:43 AM CDT	Severe Thunderstorm Warning	ILX	Cass, Fulton, Mason, Morgan, Schuyler, Scott	62 min
Jun 27, 1:48 AM CDT	Special Weather Statement	ILX	Coles, Douglas, Edgar	57 min
Jun 27, 2:10 AM CDT	Severe Thunderstorm Warning	ILX	Coles, Edgar	47 min
Jun 27, 2:15 AM CDT	Flash Flood Warning	ILX	Cass, Mason, Morgan, Scott	5 hr
Jun 27, 2:29 AM CDT	Areal Flood Advisory	ILX	Clark, Coles, Douglas, Edgar	5 hr
Jun 27, 2:35 AM CDT	Severe Thunderstorm Warning	ILX	Christian, Logan, Mason, Menard, Sangamon, Tazewell	55 min
Jun 27, 2:37 AM CDT	Flash Flood Warning	ILX	Fulton, Knox	5 hr
Jun 27, 2:44 AM CDT	Special Weather Statement	ILX	Clark	61 min
Jun 27, 2:46 AM CDT	Severe Thunderstorm Warning	ILX	Fulton, Peoria, Tazewell	59 min
Jun 27, 2:49 AM CDT	Flash Flood Warning	ILX	Clark, Coles, Edgar	6 hr
Jun 27, 3:29 AM CDT	Severe Thunderstorm Warning	ILX	Christian, DeWitt, Logan, Macon, Moultrie, Piatt and 1 more	57 min
Jun 27, 3:31 AM CDT	Severe Thunderstorm Warning	ILX	McLean, Woodford	59 min
Jun 27, 4:24 AM CDT	Flash Flood Warning	ILX	Coles, Douglas, Moultrie, Piatt	6 hr
Jun 27, 4:47 AM CDT	Special Weather Statement	ILX	Clark, Coles, Crawford, Cumberland, Edgar, Jasper and 1 more	58 min
Jun 27, 4:48 AM CDT	Areal Flood Advisory	ILX	Cumberland, Effingham, Jasper, Shelby	6 hr
Jun 27, 9:35 AM CDT	River Flood Warning	ILX	Cass, Mason	24 hr
Jun 27, 10:04 AM CDT	Areal Flood Advisory	ILX	Schuyler	50 min
Jun 27, 10:50 AM CDT	Areal Flood Warning	ILX	Schuyler	8 hr
Jun 27, 2:40 PM CDT	River Flood Warning	ILX	Fulton, Knox	6 hr

Nearby

Flash Flood Warnings in Illinois, 2011 Every flash flood warning in 2011

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.