Alert archive / Illinois / Flash Flood Watches in 2019

Flash Flood Watch 4, NWS Lincoln, IL

May 28, 201916 counties in Illinois

NWS Lincoln, IL issued this flash flood watch at May 28, 2019, 3:42 AM CDT for 16 counties in Illinois. It took effect at May 28, 2019, 7:00 PM CDT. It was in force for 12 hr.

The area

The counties it named.

The facts

Issued
May 28, 2019, 3:42 AM CDT (08:42 UTC)
In effect from
May 28, 2019, 7:00 PM CDT
Expired
May 29, 2019, 7:03 AM CDT
In force
12 hr
Issued by
NWS Lincoln, IL
Flood severity
None

Counties Cass County, IL, Fulton County, IL, Knox County, IL, Logan County, IL, Marshall County, IL, Mason County, IL, McLean County, IL, Menard County, IL, Morgan County, IL, Peoria County, IL, Sangamon County, IL, Schuyler County, IL, Scott County, IL, Stark County, IL, Tazewell County, IL, Woodford County, IL

The radar

The Lincoln radar (KILX), 47 km from the middle of the area, began a volume at 08:48 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 00:00Z, 8.7 hours before the alert went out and 106 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 00:00Z on 2019-05-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 414 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 00:00Z on 2019-05-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 72 square meters per square second.193958Sfc1 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
414 J/kg
Mixed-layer CIN
-141 J/kg
Mixed-layer LCL
1544 m above ground
0-6 km bulk shear
48 kt
0-1 km storm-relative helicity
72 m²/s²
0-3 km storm-relative helicity
234 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.3

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this flash flood watch 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 flash flood watch went out at May 28, 3:29 AM CDT, 13 minutes earlier.

Area forecast discussion, May 28, 3:29 AM CDT, 13 minutes before
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Hazardous weather outlook, May 27, 3:55 PM CDT, 11 hours 47 minutes before
Hazardous Weather Outlook
National Weather Service Lincoln IL
355 PM CDT Mon May 27 2019

ILZ027>031-036>038-041>043-281100-
De Witt-Fulton-Knox-Logan-Marshall-Mason-McLean-Peoria-Stark-
Tazewell-Woodford-
355 PM CDT Mon May 27 2019

This Hazardous Weather Outlook is for portions of central
Illinois and west central Illinois.

.DAY ONE...TONIGHT...

There is an enhanced risk of severe thunderstorms this afternoon
and early evening. Damaging winds, hail, and tornadoes are all
possible.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY...

There is a slight risk of severe thunderstorms Tuesday night.
Damaging winds are the primary concern. While additional
thunderstorms are possible Wednesday into Thursday, and again
during the weekend, the severe weather potential is lower.

Moderate flooding will continue along the Illinois River through
the period.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is likely this afternoon and evening. The most
likely time frame is 1 pm to 7 pm.

ILZ040-047>053-281100-
Cass-Christian-Macon-Menard-Morgan-Sangamon-Schuyler-Scott-
355 PM CDT Mon May 27 2019

This Hazardous Weather Outlook is for portions of central
Illinois and west central Illinois.

.DAY ONE...TONIGHT...

Scattered thunderstorms are possible this afternoon into this
evening. A few storms will be strong to severe, though the greater
risk of severe storms will be further north.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY...

There is a slight risk of severe thunderstorms Tuesday night.
Damaging winds are the primary concern. While additional
thunderstorms are possible Wednesday into Thursday, the severe
weather potential is lower.

Major flooding will continue along much of the Illinois River
through the end of the month. Moderate flooding will occur along
the La Moine River into late week. Minor flooding will impact the
Spoon River through about Thursday.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be required today, mainly this afternoon.

ILZ044>046-281100-
Champaign-Piatt-Vermilion-
355 PM CDT Mon May 27 2019

This Hazardous Weather Outlook is for portions of central
Illinois and east central Illinois.

.DAY ONE...TONIGHT...

There is an enhanced risk of severe thunderstorms this afternoon
and early evening. Damaging winds, hail, and tornadoes are all
possible.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY...

Thunderstorms are possible again Tuesday night. While some may be
strong, the chances of severe weather will be better further west.
While additional thunderstorms are possible Wednesday into
Thursday, the severe weather potential is lower.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is likely this afternoon and evening. The most
likely time frame is 4 pm to 8 pm.

ILZ054>057-061>063-281100-
Clark-Coles-Cumberland-Douglas-Edgar-Moultrie-Shelby-
355 PM CDT Mon May 27 2019

This Hazardous Weather Outlook is for portions of central
Illinois and east central Illinois.

.DAY ONE...TONIGHT...

Scattered thunderstorms are possible this afternoon. A few storms
will be strong to severe, though the greater risk of severe
storms will be further north.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY...

Thunderstorms are possible again Tuesday night. While some may be
strong, the chances of severe weather will be better further west.
While additional thunderstorms are possible Wednesday into
Thursday, the severe weather potential is lower.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be required this afternoon.

ILZ066>068-071>073-281100-
Clay-Crawford-Effingham-Jasper-Lawrence-Richland-
355 PM CDT Mon May 27 2019

This Hazardous Weather Outlook is for portions of southeast
Illinois.

.DAY ONE...TONIGHT...

Isolated thunderstorms will be possible this afternoon. Severe
weather is not expected.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY...

Thunderstorms will increase late Tuesday night, continuing into
early Thursday. While a few strong thunderstorms are possible,
widespread severe weather is not anticipated.

Minor flooding will continue along the Wabash River much of the
week, but should subside on the Little Wabash River Tuesday night.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not anticipated through tonight.

Auten

The office that day

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

IssuedProductOfficeCountiesLasted
May 28, 2:13 PM CDTSevere Thunderstorm WarningILXCass, Mason, Schuyler32 min
May 28, 2:15 PM CDTSevere Thunderstorm WarningILXDeWitt, Piatt30 min
May 28, 2:44 PM CDTSevere Thunderstorm WarningILXChampaign, Piatt51 min
May 28, 3:00 PM CDTSevere Thunderstorm WarningILXChampaign, McLean30 min
May 28, 3:23 PM CDTSevere Thunderstorm WarningILXChampaign37 min
May 28, 4:04 PM CDTSpecial Weather StatementILXVermilion26 min

Nearby

Flash Flood Watches in Illinois, 2019Every flash flood watch in 2019

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.