Alert archive / Illinois / Special Weather Statements in 2012

Special Weather Statement, NWS Lincoln, IL

June 29, 2012Stark County, Illinois

NWS Lincoln, IL issued this special weather statement at Jun 29, 2012, 9:32 PM CDT for Stark County, Illinois. It was in force for 58 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 29, 2012, 9:32 PM CDT (02:32 UTC)
Expired
Jun 29, 2012, 10:30 PM CDT
In force
58 min
Issued by
NWS Lincoln, IL

County Stark County, IL

The radar

The Quad Cities radar (KDVN), 74 km from the middle of the area, began a volume at 02:31 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

Davenport, (KDVN), launched 00:00Z, 2.5 hours before the alert went out and 70 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 00:00Z on 2012-06-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2804 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 00:00Z on 2012-06-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 122 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
2804 J/kg
Mixed-layer CIN
-89 J/kg
Mixed-layer LCL
1629 m above ground
0-6 km bulk shear
37 kt
0-1 km storm-relative helicity
122 m²/s²
0-3 km storm-relative helicity
125 m²/s²
Significant tornado parameter
0.4
Supercell composite
4.9

Open this sounding in Storm Lab

The text

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

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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 29, 8:55 PM CDT, 37 minutes earlier.

Area forecast discussion, Jun 29, 8:55 PM CDT, 37 minutes before
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Hazardous weather outlook, Jun 29, 3:28 PM CDT, 6 hours 4 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE LINCOLN IL
328 PM CDT FRI JUN 29 2012

ILZ027>031-036>038-043>046-055-057-301100-
CHAMPAIGN-DE WITT-DOUGLAS-EDGAR-FULTON-KNOX-MARSHALL-MCLEAN-
PEORIA-PIATT-STARK-TAZEWELL-VERMILION-WOODFORD-
328 PM CDT FRI JUN 29 2012

...EXCESSIVE HEAT WARNING IN EFFECT UNTIL 7 PM CDT SUNDAY...

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

.DAY ONE...TONIGHT

SCATTERED THUNDERSTORMS WILL BE POSSIBLE AS A FRONTAL BOUNDARY
REMAINS STALLED IN THE VICINITY. ISOLATED LARGE HAIL AND DAMAGING
WIND GUSTS ARE POSSIBLE WITH THE STRONGER STORMS.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY

VERY HOT AND HUMID CONDITIONS WILL PERSIST THROUGH THE
WEEKEND...WITH AFTERNOON HEAT INDEX VALUES OF 100 TO 105 ON BOTH
SATURDAY AND SUNDAY. SCATTERED THUNDERSTORMS WILL BE POSSIBLE AS
WELL. A FEW OF THE STRONGER STORMS COULD PRODUCE ISOLATED LARGE
HAIL AND DAMAGING WIND GUSTS ON SATURDAY.

NO RELIEF FROM THE HEAT IS EXPECTED THROUGH THE MIDDLE OF NEXT
WEEK...WITH HIGH TEMPERATURES RISING WELL INTO THE 90S EACH DAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED TONIGHT.

ILZ040>042-047>053-301100-
CASS-CHRISTIAN-LOGAN-MACON-MASON-MENARD-MORGAN-SANGAMON-SCHUYLER-
SCOTT-
328 PM CDT FRI JUN 29 2012

...EXCESSIVE HEAT WARNING IN EFFECT UNTIL 7 PM CDT SUNDAY...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL
ILLINOIS.

.DAY ONE...TONIGHT

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY

VERY HOT AND HUMID CONDITIONS WILL PERSIST THROUGH THE
WEEKEND...WITH AFTERNOON HEAT INDEX VALUES OF 105 TO 110 ON BOTH
SATURDAY AND SUNDAY.

NO RELIEF FROM THE HEAT IS EXPECTED THROUGH THE MIDDLE OF NEXT
WEEK...WITH HIGH TEMPERATURES RISING WELL INTO THE 90S EACH DAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE REQUIRED THROUGH TONIGHT.

ILZ054-056-061>063-066>068-071>073-301100-
CLARK-CLAY-COLES-CRAWFORD-CUMBERLAND-EFFINGHAM-JASPER-LAWRENCE-
MOULTRIE-RICHLAND-SHELBY-
328 PM CDT FRI JUN 29 2012

...EXCESSIVE HEAT WARNING IN EFFECT UNTIL 7 PM CDT SUNDAY...

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

.DAY ONE...TONIGHT

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY

VERY HOT AND HUMID CONDITIONS WILL PERSIST THROUGH THE
WEEKEND...WITH AFTERNOON HEAT INDEX VALUES OF 105 TO 110 ON BOTH
SATURDAY AND SUNDAY.

NO RELIEF FROM THE HEAT IS EXPECTED THROUGH THE MIDDLE OF NEXT
WEEK...WITH HIGH TEMPERATURES RISING TO AROUND 100 DEGREES EACH DAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE REQUIRED THROUGH TONIGHT.

BARNES

In the hours before

Special weather statement, Jun 29, 9:32 PM CDT, 0 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE LINCOLN IL
932 PM CDT FRI JUN 29 2012

ILZ027-028-300330-
KNOX-STARK-
932 PM CDT FRI JUN 29 2012

...SIGNIFICANT WEATHER ADVISORY FOR NORTHERN KNOX AND STARK COUNTIES
UNTIL 1030 PM CDT...

AT 926 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM NEAR ALTONA...OR 10 MILES SOUTH OF CAMBRIDGE...
MOVING EAST AT 40 MPH.

SMALL HAIL...AND WINDS AROUND 55 MPH ARE EXPECTED WITH THIS STORM.

LOCATIONS IMPACTED INCLUDE...
  LA FAYETTE...
  ELMIRA...
  TOULON...
  OSCEOLA...
  WYOMING...
  CASTLETON...

PEOPLE NEAR THESE LOCATIONS SHOULD MONITOR THE WEATHER SITUATION
CLOSELY. LISTEN FOR POSSIBLE WARNINGS...AND BE PREPARED TO TAKE
APPROPRIATE ACTION SHOULD SEVERE WEATHER THREATEN.

LAT...LON 4124 8964 4103 8964 4104 9044 4115 9045
      4116 8988 4124 8986
TIME...MOT...LOC 0233Z 271DEG 33KT 4115 9013

SHIMON

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 30, 3:19 AM CDTHeat AdvisoryILXKnox, McLean, Marshall, Peoria, Stark, Tazewell and 1 more40 hr

Nearby

Special Weather Statements in Illinois, 2012Every special weather statement in 2012

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.