Alert archive / Illinois / Areal Flood Warnings in 2011

Areal Flood Warning 20, NWS Lincoln, IL

June 19, 2011Morgan County, Illinois

NWS Lincoln, IL issued this areal flood warning at Jun 19, 2011, 6:34 PM CDT for Morgan County, Illinois. It was in force for 12 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Jun 19, 2011, 6:34 PM CDT (23:34 UTC)
Expired
Jun 20, 2011, 6:30 AM CDT
In force
12 hr
Issued by
NWS Lincoln, IL
Area
Storm-based polygon
Flood severity
None

County Morgan County, IL

The radar

The Lincoln radar (KILX), 88 km from the middle of the area, began a volume at 23:31 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, 11.6 hours before the alert went out and 145 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-pSkew-T log-p diagram, Lincoln, IL at 12:00Z on 2011-06-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 919 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Lincoln, IL at 12:00Z on 2011-06-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -32 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
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
919 J/kg
Mixed-layer CIN
-13 J/kg
Mixed-layer LCL
497 m above ground
0-6 km bulk shear
19 kt
0-1 km storm-relative helicity
-32 m²/s²
0-3 km storm-relative helicity
63 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 areal flood warning 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 areal flood warning went out at Jun 19, 6:15 PM CDT, 19 minutes earlier.

Area forecast discussion, Jun 19, 6:15 PM CDT, 19 minutes before
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Hazardous weather outlook, Jun 19, 3:22 PM CDT, 3 hours 12 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE LINCOLN IL
322 PM CDT SUN JUN 19 2011

ILZ040-047-049-050-201100-
CASS-MORGAN-SCHUYLER-SCOTT-
322 PM CDT SUN JUN 19 2011

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL
ILLINOIS.

.DAY ONE...TONIGHT

A LARGE AREA OF STORMS IS EXPECTED TO DEVELOP THIS EVENING OUT
WEST AND THEN MOVE EAST INTO THE AREA LATER IN THE EVENING AND
INTO THE OVERNIGHT HOURS. SOME OF THE STORMS THAT MOVE INTO THE
AREA COULD BE SEVERE WITH DAMAGING WINDS AND LARGE HAIL POSSIBLE.

FLOODING WILL CONTINUE ALONG THE ILLINOIS RIVER FROM PEORIA AND
DOWN STREAM FOR THE NEXT SEVERAL DAYS.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY

STORMS OVERNIGHT WILL CONTINUE INTO MONDAY MORNING BEFORE ENDING
BY AFTERNOON. SOME OF THESE EARLY MORNING STORMS COULD STILL BE
SEVERE. THEN DRY WEATHER IS EXPECTED FOR MONDAY AFTERNOON.

THEN A STRONG COLD FRONT WILL MOVE INTO THE AREA TUESDAY AND BRING
ANOTHER ROUND OF THUNDERSTORMS FOR TUESDAY AND TUESDAY NIGHT. SOME
OF THESE STORMS COULD BE SEVERE...WITH LARGE HAIL AND DAMAGING
WINDS POSSIBLE...MAINLY IN THE AFTERNOON AND EVENING HOURS.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED DURING THE OVERNIGHT HOURS.

ILZ038-042>046-048-052>057-061>063-066>068-071>073-201100-
CHAMPAIGN-CHRISTIAN-CLARK-CLAY-COLES-CRAWFORD-CUMBERLAND-DE WITT-
DOUGLAS-EDGAR-EFFINGHAM-JASPER-LAWRENCE-LOGAN-MACON-MCLEAN-MENARD-
MOULTRIE-PIATT-RICHLAND-SHELBY-VERMILION-
322 PM CDT SUN JUN 19 2011

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL
ILLINOIS...EAST CENTRAL ILLINOIS AND SOUTHEAST ILLINOIS.

.DAY ONE...TONIGHT

A LARGE AREA OF STORMS IS EXPECTED TO DEVELOP THIS EVENING OUT
WEST AND THEN MOVE EAST INTO THE AREA LATER IN THE EVENING AND
INTO THE OVERNIGHT HOURS. STORMS ARE NOT EXPECTED TO REACH SEVERE CRITERIA.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY

STORMS OVERNIGHT WILL CONTINUE INTO MONDAY MORNING BEFORE ENDING
BY AFTERNOON. SOME OF THESE EARLY MORNING STORMS COULD STILL BE
SEVERE. THEN DRY WEATHER IS EXPECTED FOR MONDAY AFTERNOON.

THEN A STRONG COLD FRONT WILL MOVE INTO THE AREA TUESDAY AND BRING
ANOTHER ROUND OF THUNDERSTORMS FOR TUESDAY AND TUESDAY NIGHT. SOME
OF THESE STORMS COULD BE SEVERE...WITH LARGE HAIL AND DAMAGING
WINDS POSSIBLE...MAINLY IN THE AFTERNOON AND EVENING HOURS.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED DURING THE OVERNIGHT HOURS.

ILZ051-201100-
SANGAMON-
322 PM CDT SUN JUN 19 2011

...FLASH FLOOD WATCH IN EFFECT THROUGH MONDAY EVENING...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL
ILLINOIS.

.DAY ONE...TONIGHT

A LARGE AREA OF STORMS IS EXPECTED TO DEVELOP THIS EVENING OUT
WEST AND THEN MOVE EAST INTO THE AREA LATER IN THE EVENING AND
INTO THE OVERNIGHT HOURS. STORMS ARE NOT EXPECTED TO REACH SEVERE
CRITERIA. FLASH FLOODING CONCERNS CONTINUE FOR AREAS DOWNSTREAM OF
THE SPAULDING DAM ON LAKE SPRINGFIELD DUE TO INCREASED RELEASE.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY

STORMS OVERNIGHT WILL CONTINUE INTO MONDAY MORNING BEFORE ENDING
BY AFTERNOON. SOME OF THESE EARLY MORNING STORMS COULD STILL BE
SEVERE. THEN DRY WEATHER IS EXPECTED FOR MONDAY AFTERNOON.

THEN A STRONG COLD FRONT WILL MOVE INTO THE AREA TUESDAY AND BRING
ANOTHER ROUND OF THUNDERSTORMS FOR TUESDAY AND TUESDAY NIGHT. SOME
OF THESE STORMS COULD BE SEVERE...WITH LARGE HAIL AND DAMAGING
WINDS POSSIBLE...MAINLY IN THE AFTERNOON AND EVENING HOURS.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED DURING THE OVERNIGHT HOURS.

ILZ027>031-036-037-041-201100-
FULTON-KNOX-MARSHALL-MASON-PEORIA-STARK-TAZEWELL-WOODFORD-
322 PM CDT SUN JUN 19 2011

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL
ILLINOIS.

.DAY ONE...TONIGHT

A LARGE AREA OF STORMS IS EXPECTED TO DEVELOP THIS EVENING OUT
WEST AND THEN MOVE EAST INTO THE AREA LATER IN THE EVENING AND
INTO THE OVERNIGHT HOURS. STORMS ARE NOT EXPECTED TO REACH SEVERE CRITERIA.

FLOODING WILL CONTINUE ALONG THE ILLINOIS RIVER FROM PEORIA AND
DOWN STREAM FOR THE NEXT SEVERAL DAYS.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY

STORMS OVERNIGHT WILL CONTINUE INTO MONDAY MORNING BEFORE ENDING
BY AFTERNOON. SOME OF THESE EARLY MORNING STORMS COULD STILL BE
SEVERE. THEN DRY WEATHER IS EXPECTED FOR MONDAY AFTERNOON.

THEN A STRONG COLD FRONT WILL MOVE INTO THE AREA TUESDAY AND BRING
ANOTHER ROUND OF THUNDERSTORMS FOR TUESDAY AND TUESDAY NIGHT. SOME
OF THESE STORMS COULD BE SEVERE...WITH LARGE HAIL AND DAMAGING
WINDS POSSIBLE...MAINLY IN THE AFTERNOON AND EVENING HOURS.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED DURING THE OVERNIGHT HOURS.

HJS

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 18, 7:25 PM CDTFlash Flood WarningILXSangamon12 hr
Jun 18, 10:33 PM CDTAreal Flood WarningILXMorgan, Sangamon6 hr
Jun 19, 1:09 AM CDTSpecial Weather StatementILXMorgan, Scott66 min
Jun 19, 4:34 AM CDTFlash Flood WarningILXEffingham, Shelby9 hr
Jun 19, 4:35 AM CDTAreal Flood WarningILXMorgan, Sangamon14 hr
Jun 19, 5:24 AM CDTSevere Thunderstorm WarningILXCrawford, Lawrence36 min
Jun 19, 7:16 AM CDTFlash Flood WarningILXSangamon7 hr
Jun 19, 9:16 AM CDTFlash Flood WarningILXScott12 hr
Jun 19, 9:53 AM CDTAreal Flood AdvisoryILXCass, Morgan6 hr
Jun 19, 10:29 AM CDTRiver Flood WarningILXLawrence69 hr
Jun 19, 2:29 PM CDTFlash Flood WatchILXSangamon15 hr

Nearby

Areal Flood Warnings in Illinois, 2011Every areal 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.