Alert archive / Illinois / Special Weather Statements in 2017

Special Weather Statement, NWS Lincoln, IL

April 10, 2017Sangamon County, Illinois

NWS Lincoln, IL issued this special weather statement at Apr 10, 2017, 4:52 PM CDT for Sangamon County, Illinois. It was in force for 38 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: Apr 10, 2017, 4:52 PM CDT (21:52 UTC)
Expired: Apr 10, 2017, 5:30 PM CDT
In force: 38 min
Issued by: NWS Lincoln, IL

County Sangamon County, IL

The radar

The Lincoln radar (KILX), 64 km from the middle of the area, began a volume at 21:52 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, 9.9 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-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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1373 m above ground
0-6 km bulk shear: 61 kt
0-1 km storm-relative helicity: -63 m²/s²
0-3 km storm-relative helicity: 3 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 Apr 10, 2:59 PM CDT, 1 hour 53 minutes earlier.

Area forecast discussion, Apr 10, 2:59 PM CDT, 1 hour 53 minutes before

Area Forecast Discussion
National Weather Service Lincoln IL
259 PM CDT Mon Apr 10 2017

.SHORT TERM...(This evening through Tuesday)
ISSUED AT 258 PM CDT Mon Apr 10 2017

A cold front was pushing into west-central Illinois at mid-
afternoon. This front is expected to clear the forecast area to east
around Midnight, taking the associated threat of showers and
thunderstorms with it. There is a risk of a few severe storms at
least into early evening with modest instability (CAPEs to around
2000 j/kg) and fairly strong shear (bulk shear around 50 kts).
Primary threats remain large hail and damaging wind gusts.

High pressure will start building into the area for Tuesday behind
the front. Cooler conditions are expected, but temperatures will
still be near normal for early-mid April. The drier air mass
associated with the high will also return quiet weather to the area.

&&

.LONG TERM...(Tuesday night through Monday)
ISSUED AT 258 PM CDT Mon Apr 10 2017

Surface high pressure and weak upper-level ridging will be place
across the forecast area into Wednesday night, providing continued
quiet weather. Then, a weak, fast moving, short wave will bring the
next chance for showers/storm to the area by Thursday. However, this
will be a weakening wave and should not be a significant weather
producer.

Upper-level heights will build across the area to end the week,
resulting in well above normal temperatures across the area by
Friday and Saturday. However, as the heights build, a disturbance
will cross the area from the southwest and push a warm front across
the area. The passage of this front and the more unstable air in its
wake supports a periodic risk of showers/storms through Saturday.

A stronger wave will top/flatten the ridge Saturday night into
Sunday, pushing a cold front through the area. The passage of this
front should be accompanied by a more widespread risk of
showers/storms, as well as heavier rainfall. Drier and somewhat
cooler conditions return to the area behind the front.

&&

.AVIATION...(For the 18Z TAFS through 18Z Tuesday afternoon)
Issued at 1257 PM CDT Mon Apr 10 2017

VFR conditions should prevail across the central Illinois
terminals for the bulk of the 18Z TAF valid time. However, brief
periods of MVFR conditions are possible this afternoon into early
evening as showers/storms ahead of an advancing cold front move
through the area. Gusty southerly winds ahead of the front will
diminish and trend west and eventually northwest behind the front.
Wrap around MVFR CIGs are possible Tuesday morning, but
confidence is too low to include at this time.

&&

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

SHORT TERM...Bak
LONG TERM...Bak
AVIATION...Bak

Hazardous weather outlook, Apr 10, 3:57 PM CDT, 55 minutes before

Hazardous Weather Outlook
National Weather Service Lincoln IL
357 PM CDT Mon Apr 10 2017

ILZ027-036-040-111100-
Fulton-Knox-Schuyler-
357 PM CDT Mon Apr 10 2017

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

.DAY ONE...TONIGHT...

Minor to moderate flooding will continue along the Illinois
River through this week.

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

The next chance for thunderstorms will be late Wednesday night
into Thursday.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not anticipated through tonight.

ILZ028>031-037-041-047-111100-
Cass-Marshall-Mason-Peoria-Stark-Tazewell-Woodford-
357 PM CDT Mon Apr 10 2017

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

.DAY ONE...TONIGHT...

Scattered thunderstorms will occur into early evening. There is a
slight risk of severe thunderstorms, with damaging winds and
large hail the main threats. The threat of storms should move east
of the area by 5 pm.

Minor to moderate flooding will continue along the Illinois River
through this week.

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

The next chance for thunderstorms will be late Wednesday night
into Thursday.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed through 5 pm.

ILZ049-050-111100-
Morgan-Scott-
357 PM CDT Mon Apr 10 2017

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

.DAY ONE...TONIGHT...

Minor to moderate flooding will continue along the Illinois River
through this week.

A few thunderstorms will occur across the area early this
evening. An isolated severe thunderstorm is possible, with large
hail and damaging wind gusts the primary threats.

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

The next chance for thunderstorms will be late Wednesday night
into Thursday.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed until about 5 pm.

ILZ038-042>046-048-051>053-111100-
Champaign-Christian-De Witt-Logan-Macon-McLean-Menard-Piatt-
Sangamon-Vermilion-
357 PM CDT Mon Apr 10 2017

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

.DAY ONE...TONIGHT...

Scattered thunderstorms will continue into early evening. There
is a slight risk of these storms becoming severe, with damaging
winds and large hail the primary threats.

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

The next chance for thunderstorms will be on Thursday.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be required this evening, mainly before 8
pm.

ILZ054>057-061>063-066>068-071>073-111100-
Clark-Clay-Coles-Crawford-Cumberland-Douglas-Edgar-Effingham-
Jasper-Lawrence-Moultrie-Richland-Shelby-
357 PM CDT Mon Apr 10 2017

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

.DAY ONE...TONIGHT...

Thunderstorms are expected across the area through this evening. A
few of the storms will be capable of producing strong wind gusts
and hail.

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

The next chance for thunderstorms will be on Thursday.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not anticipated through tonight.

Bak

In the hours before

Local storm report, Apr 10, 3:59 PM CDT, 53 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LINCOLN IL
359 PM CDT MON APR 10 2017

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0352 PM     HAIL             WASHINGTON              40.70N 89.44W
04/10/2017  M1.75 INCH       TAZEWELL           IL   TRAINED SPOTTER

&&

JRP

Local storm report, Apr 10, 4:02 PM CDT, 50 minutes before

PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE LINCOLN IL
402 PM CDT MON APR 10 2017

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0249 PM     HAIL             2 N CUBA                40.52N 90.19W
04/10/2017  M1.00 INCH       FULTON             IL   TRAINED SPOTTER

0304 PM     HAIL             CANTON                  40.56N 90.04W
04/10/2017  M1.75 INCH       FULTON             IL   EMERGENCY MNGR

0306 PM     HAIL             CANTON                  40.56N 90.04W
04/10/2017  M1.00 INCH       FULTON             IL   TRAINED SPOTTER

0310 PM     HAIL             CANTON                  40.56N 90.04W
04/10/2017  M2.00 INCH       FULTON             IL   PUBLIC

0310 PM     HAIL             1 NE NORRIS             40.64N 90.02W
04/10/2017  M1.75 INCH       FULTON             IL   EMERGENCY MNGR

0310 PM     HAIL             3 WNW GLASFORD          40.59N 89.87W
04/10/2017  M0.75 INCH       PEORIA             IL   EMERGENCY MNGR

0320 PM     HAIL             1 N PEORIA INTERNATIONA 40.68N 89.68W
04/10/2017  M1.75 INCH       PEORIA             IL   EMERGENCY MNGR

0330 PM     HAIL             BARTONVILLE             40.64N 89.66W
04/10/2017  M0.75 INCH       PEORIA             IL   EMERGENCY MNGR

0335 PM     HAIL             PEORIA                  40.74N 89.61W
04/10/2017  M0.75 INCH       PEORIA             IL   TRAINED SPOTTER

            NEAR BRADLEY UNIVERSITY

0339 PM     HAIL             PEORIA                  40.74N 89.61W
04/10/2017  M1.00 INCH       PEORIA             IL   TRAINED SPOTTER

0340 PM     HAIL             1 NW GERMANTOWN HILLS   40.78N 89.48W
04/10/2017  M0.75 INCH       WOODFORD           IL   COCORAHS

0342 PM     HAIL             EAST PEORIA             40.67N 89.55W
04/10/2017  M1.75 INCH       TAZEWELL           IL   TRAINED SPOTTER

0346 PM     FUNNEL CLOUD     WASHINGTON              40.70N 89.44W
04/10/2017                   TAZEWELL           IL   LAW ENFORCEMENT

0352 PM     HAIL             WASHINGTON              40.70N 89.44W
04/10/2017  M1.75 INCH       TAZEWELL           IL   TRAINED SPOTTER

&&

JRP

Local storm report, Apr 10, 4:21 PM CDT, 31 minutes before

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Local storm report, Apr 10, 4:29 PM CDT, 23 minutes before

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Local storm report, Apr 10, 4:38 PM CDT, 14 minutes before

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Special weather statement, Apr 10, 4:52 PM CDT, 0 minutes before

Special Weather Statement
National Weather Service Lincoln IL
452 PM CDT MON APR 10 2017

ILZ051-052-102230-
Sangamon-Christian-
452 PM CDT MON APR 10 2017

...SIGNIFICANT WEATHER ADVISORY FOR WEST CENTRAL CHRISTIAN AND SOUTH
CENTRAL SANGAMON COUNTIES UNTIL 530 PM CDT...

At 451 PM CDT, Doppler radar was tracking a strong thunderstorm near
Virden, moving northeast at 50 mph.

Nickel size hail will be possible with this storm.

Locations impacted include...
Springfield, Chatham, Auburn, Rochester, Pawnee, Divernon, Edinburg,
Thayer, Tovey, Berry, Sangchris Lake State Park, Glenarm, Sicily and
Lowder.

This includes Interstate 55 between mile markers 77 and 89.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
office in Lincoln.

&&

A severe thunderstorm watch remains in effect until 1000 PM CDT for
central Illinois.

LAT...LON 3976 8952 3964 8932 3952 8964 3952 8993
      3956 8992
TIME...MOT...LOC 2151Z 237DEG 44KT 3954 8981

Geelhart

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 10, 4:17 AM CDT	Special Weather Statement	ILX	Knox	43 min
Apr 10, 4:47 AM CDT	Special Weather Statement	ILX	Fulton	43 min
Apr 10, 4:56 AM CDT	Severe Thunderstorm Warning	ILX	Fulton, Knox, Mason, Peoria	49 min
Apr 10, 5:08 AM CDT	Special Weather Statement	ILX	Marshall	52 min
Apr 10, 5:30 AM CDT	Special Weather Statement	ILX	Cass	45 min
Apr 10, 5:50 AM CDT	Special Weather Statement	ILX	Morgan, Scott	40 min
Apr 10, 7:37 AM CDT	Special Weather Statement	ILX	Champaign, Vermilion	38 min
Apr 10, 7:40 AM CDT	Severe Thunderstorm Warning	ILX	Vermilion	32 min
Apr 10, 11:31 AM CDT	Special Weather Statement	ILX	Edgar	44 min
Apr 10, 11:57 AM CDT	Severe Thunderstorm Warning	ILX	Edgar, Vermilion	18 min
Apr 10, 1:51 PM CDT	Special Weather Statement	ILX	Shelby	24 min
Apr 10, 2:16 PM CDT	Special Weather Statement	ILX	Fulton	29 min
Apr 10, 2:18 PM CDT	Special Weather Statement	ILX	Clay, Effingham	27 min
Apr 10, 2:25 PM CDT	Severe Thunderstorm Warning	ILX	Fulton, Knox	50 min
Apr 10, 2:28 PM CDT	Severe Thunderstorm Warning	ILX	Cumberland, Effingham, Jasper	32 min
Apr 10, 2:38 PM CDT	Special Weather Statement	ILX	Morgan	37 min
Apr 10, 2:48 PM CDT	Severe Thunderstorm Warning	ILX	Clark	27 min
Apr 10, 3:02 PM CDT	Severe Thunderstorm Warning	ILX	Fulton, Peoria	43 min
Apr 10, 3:09 PM CDT	Severe Thunderstorm Warning	ILX	Morgan, Scott	51 min
Apr 10, 3:19 PM CDT	Special Weather Statement	ILX	Menard	41 min
Apr 10, 3:37 PM CDT	Severe Thunderstorm Warning	ILX	Peoria, Tazewell, Woodford	11 min
Apr 10, 3:45 PM CDT	Severe Thunderstorm Warning	ILX	Peoria, Tazewell, Woodford	45 min
Apr 10, 3:55 PM CDT	Special Weather Statement	ILX	Sangamon	35 min
Apr 10, 4:09 PM CDT	Severe Thunderstorm Warning	ILX	Christian, Sangamon	16 min
Apr 10, 5:25 PM CDT	Special Weather Statement	ILX	Macon	35 min
Apr 10, 6:37 PM CDT	Special Weather Statement	ILX	Christian	23 min
Apr 10, 6:54 PM CDT	Special Weather Statement	ILX	Christian, Shelby	21 min

Nearby

Special Weather Statements in Illinois, 2017 Every 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.