Alert archive / Illinois / Special Weather Statements in 2017

Special Weather Statement, NWS Lincoln, IL

June 19, 2017Peoria County, Illinois

NWS Lincoln, IL issued this special weather statement at Jun 19, 2017, 4:45 PM CDT for Peoria County, Illinois. It was in force for 45 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Jun 19, 2017, 4:45 PM CDT (21:45 UTC)
Expired
Jun 19, 2017, 5:30 PM CDT
In force
45 min
Issued by
NWS Lincoln, IL

County Peoria County, IL

The radar

The Lincoln radar (KILX), 89 km from the middle of the area, began a volume at 21:46 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

Davenport, (KDVN), launched 12:00Z, 9.8 hours before the alert went out and 105 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, Davenport, at 12:00Z on 2017-06-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 29 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, Davenport, at 12:00Z on 2017-06-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 28 square meters per square second.19395878Sfc1 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
29 J/kg
Mixed-layer CIN
-71 J/kg
Mixed-layer LCL
1159 m above ground
0-6 km bulk shear
37 kt
0-1 km storm-relative helicity
28 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

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement 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 special weather statement went out at Jun 19, 2:56 PM CDT, 1 hour 49 minutes earlier.

Area forecast discussion, Jun 19, 2:56 PM CDT, 1 hour 49 minutes before
Area Forecast Discussion
National Weather Service Lincoln IL
256 PM CDT Mon Jun 19 2017

.SHORT TERM...(This evening through Tuesday)
ISSUED AT 224 PM CDT Mon Jun 19 2017

Deep cyclonic flow will linger across central and southeast
Illinois through the period. This flow regime, coupled with
unseasonably cool temperatures aloft, is supportive of deep
diurnal mixing/gusty winds and spotty diurnal convection. The
threat for isolated showers and storms will linger for a couple
hours early this evening before peak diurnal instability is lost.
The threat for isolated showers/storms will return by Tuesday
afternoon. The relatively dry air mass in place will help keep
storm coverage and CAPE values to a minimum, but the dry air
beneath cloud level could support some strong convective wind
gusts.

&&

.LONG TERM...(Tuesday night through Monday)
ISSUED AT 224 PM CDT Mon Jun 19 2017

Upper-level flow flattens out for the middle of the week, allowing
temperatures to climb back above normal. A strong wave is progged
to track across Canada within this developing flow regime.
Shower/storm chances increase across at least northern portion of
the forecast area late Wednesday night into Thursday as an
associated storm complex may impact the area. Precipitation
chances increase across the entire forecast area Thursday night
into Friday as the wave tracks further east across Canada and a
trailing frontal boundary settles across the forecast area.

Beyond Friday, much more considerable uncertainty enters the
local precipitaton forecast. There are differences in exactly
where the trailing front eventually stalls, and how often it is
activated by disturbances riding along it. Further complicating
issues is the potential tropical system over the Gulf of Mexico
for late in the week, which may have impacts on the weather
pattern locally. Model trends will need to be watched closely as a
consensus is hopefully reached sooner rather than later.

&&

.AVIATION...(For the 18Z TAFS through 18Z Tuesday afternoon)
Issued at 1219 PM CDT Mon Jun 19 2017

Deep mixing will result in gusty west-northwest winds into early
evening across the central Illinois terminals. Winds should
decouple early this evening, with speeds falling below 10kts for
the remainder of the 18Z TAF valid time. Peak daytime heating,
coupled with a couple upper-level disturbances, will result in
spotty showers or thunderstorms into early evening. Coverage
should remain too low to go above a VCSH/VCTS mention at this
time. VFR conditions should prevail through the entire forecast
period.

&&

.ILX WATCHES/WARNINGS/ADVISORIES...
NONE.
&&

SHORT TERM...Bak
LONG TERM...Bak
AVIATION...Bak
Hazardous weather outlook, Jun 19, 3:19 PM CDT, 1 hour 26 minutes before
Hazardous Weather Outlook
National Weather Service Lincoln IL
319 PM CDT Mon Jun 19 2017

ILZ036-040>044-047>057-061-201100-
Cass-Christian-Coles-De Witt-Douglas-Edgar-Fulton-Logan-Macon-
Mason-Menard-Morgan-Moultrie-Piatt-Sangamon-Schuyler-Scott-Shelby-
319 PM CDT Mon Jun 19 2017

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

.DAY ONE...TONIGHT...

Isolated to widely scattered thunderstorms will be possible into
early this evening. Severe weather is not expected, however, the
stronger storms may produce gusty winds and small hail mainly
along and north of the Interstate 74 corridor.

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

An isolated thunderstorm will be possible again Tuesday afternoon.
No severe weather is expected.

There will be a chance for thunderstorms late Wednesday night into
Thursday morning, especially along and west of Interstate 55. At
this time, no severe weather is expected.

A frontal boundary will slip south across the area late Thursday
bringing the best chances for showers and thunderstorms. Chances
will last into at least the start of the weekend bringing daily
chances for thunderstorms to the area.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed through tonight.

ILZ062-063-066>068-071>073-201100-
Clark-Clay-Crawford-Cumberland-Effingham-Jasper-Lawrence-Richland-
319 PM CDT Mon Jun 19 2017

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

.DAY ONE...TONIGHT...

No hazardous weather is expected at this time.

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

A frontal boundary will slip south across the area late Thursday
bringing the best chances for showers and thunderstorms. Chances
will last into at least the start of the weekend bringing daily
chances for thunderstorms to the area.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed through tonight.

ILZ027>031-037-038-045-046-201100-
Champaign-Knox-Marshall-McLean-Peoria-Stark-Tazewell-Vermilion-
Woodford-
319 PM CDT Mon Jun 19 2017

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

.DAY ONE...TONIGHT...

Isolated to widely scattered thunderstorms will be possible into
early this evening. There is a marginal risk of severe weather,
with damaging winds and large hail possible with the strongest
storms.

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

An isolated thunderstorm will be possible again Tuesday afternoon.
No severe weather is expected.

There will be a chance for thunderstorms late Wednesday night into
Thursday morning, especially along and west of Interstate 55. At
this time, no severe weather is expected.

A frontal boundary will slip south across the area late Thursday
bringing the best chances for showers and thunderstorms. Chances
will last into at least the start of the weekend bringing daily
chances for thunderstorms to the area.

.SPOTTER INFORMATION STATEMENT...

Spotter activation might be requested later this afternoon.

HJS

In the hours before

Special weather statement, Jun 19, 4:45 PM CDT, 0 minutes before
Special Weather Statement
National Weather Service Lincoln IL
445 PM CDT MON JUN 19 2017

ILZ028>031-037-192230-
Tazewell-Marshall-Peoria-Woodford-Stark-
445 PM CDT MON JUN 19 2017

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN MARSHALL...
NORTHWESTERN WOODFORD...SOUTHERN STARK...NORTHEASTERN TAZEWELL AND
NORTHERN PEORIA COUNTIES UNTIL 530 PM CDT...

At 445 PM CDT, Doppler radar was tracking a strong thunderstorm near
West Jersey, or 15 miles south of Kewanee, moving southeast at 35
mph.

Dime size hail and winds in excess of 40 mph will be possible with
this storm.

Locations impacted include...
Peoria, Eureka, East Peoria, Washington, Chillicothe, Metamora,
Germantown Hills, Princeville, Rome, Wyoming, Dunlap, Toulon,
Washburn, Spring Bay, Bay View Gardens, West Jersey, Laura, Elmore,
Peoria Heights and Cazenovia.

LAT...LON 4094 8999 4111 8992 4093 8910 4063 8937
TIME...MOT...LOC 2145Z 296DEG 31KT 4103 8987

Barnes

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 19, 5:42 PM CDTSpecial Weather StatementILXStark48 min
Jun 19, 5:52 PM CDTSpecial Weather StatementILXPeoria53 min
Jun 19, 6:24 PM CDTSpecial Weather StatementILXTazewell51 min
Jun 19, 6:56 PM CDTSpecial Weather StatementILXMcLean49 min

Nearby

Special Weather Statements in Illinois, 2017Every special weather statement in 2017

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.