Alert archive / Illinois / Special Weather Statements in 2013

Special Weather Statement, NWS Lincoln, IL

June 22, 2013Macon County, Illinois

NWS Lincoln, IL issued this special weather statement at Jun 22, 2013, 3:02 PM CDT for Macon County, Illinois. It was in force for 43 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 22, 2013, 3:02 PM CDT (20:02 UTC)
Expired: Jun 22, 2013, 3:45 PM CDT
In force: 43 min
Issued by: NWS Lincoln, IL

County Macon County, IL

The radar

The Lincoln radar (KILX), 28 km from the middle of the area, began a volume at 20:01 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, 8.0 hours before the alert went out and 41 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: 2564 J/kg
Mixed-layer CIN: -68 J/kg
Mixed-layer LCL: 876 m above ground
0-6 km bulk shear: 4 kt
0-1 km storm-relative helicity: -10 m²/s²
0-3 km storm-relative helicity: -16 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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 22, 3:00 PM CDT, 2 minutes earlier.

Area forecast discussion, Jun 22, 3:00 PM CDT, 2 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LINCOLN IL
300 PM CDT SAT JUN 22 2013

.DISCUSSION...
ISSUED 300 PM CDT SAT JUN 22 2013

INITIAL CONCERNS ARE WITH THE CLUSTERS OF STORMS DROPPING HEAVY
RAINFALL MOVING SOUTH ACROSS OUR E-SE COUNTIES. THEN ATTENTION
TURNS TO SEVERE POTENTIAL TOMORROW AND MONDAY...WHERE SPC HAS
DEFINED A SLIGHT RISK EACH DAY FOR SEVERE POTENTIAL MAINLY NW OF
PEORIA. MODELS CONTINUE TO HAVE DIFFICULTY RESOLVING MESO-SCALE
STORM COMPLEXES IN THIS SUMMER-TIME PATTERN...SO WILL KEEP MAINLY
CHANCE POPS THROUGHOUT THE FORECAST. WE WENT WITH ONLY SLIGHT
CHANCE POPS TUE-WED BASED ON A PERCEIVED LULL IN THE MODELS...BUT
CAN NOT RULE OUT RAMPING UP STORMS BOTH THOSE DAYS AS BOUNDARIES
AND SHORTWAVES BECOME BETTER DEFINED.

SHORT TERM...TONIGHT THROUGH TUESDAY.

STORMS CONTINUE TO FIRE ALONG AN OUTFLOW BOUNDARY MOVING S AND W
FROM OUR NE COUNTIES. VERY HEAVY RAINFALL RATES OF 1-2 INCHES PER
HOUR HAVE BEEN REPORTED UNDER THE STRONGER STORMS...WITH RAINFALL
AMOUNTS UP TO 2 INCHES AND FLOODED ROADS IN SOME LOCATIONS.
VARIOUS FLOOD WARNINGS AND ADVISORIES ARE IN EFFECT FOR MANY OF
OUR EASTERN COUNTIES. VERY FEW HAIL AND WIND REPORTS HAVE COME
IN...DESPITE STRONG UPDRAFTS IN THE STORM CORES. MARGINAL
DOWNDRAFT CAPE AND VERY WARM LOW LEVELS MAY BE ACCOUNTING FOR SOME
OF THE LACK OF HAIL/WIND. INSTABILITY PARAMS SHOW SUFFICIENT ML-
CAPE FOR CONTINUED STORM DEVELOPMENT INTO THE EVENING IN THE SE
HALF OF OUR FORECAST AREA /FA/. WE WILL INDICATE THAT IN THE SHORT
TERM GRIDS...WITH DRY CONDITIONS THROUGH TONIGHT FOR OUR NW AREAS.

SPC EXPANDED THE SLIGHT RISK FOR DAY 2 INTO OUR NW COUNTIES WITH
THE 18Z UPDATE...SO ANOTHER ROUND OF STRONG TO SEVERE STORMS WILL
BE POSSIBLE TOMORROW. SEVERE WEATHER CAN OCCUR IN AND AROUND ANY
SLIGHT RISK AREA...SO CAN NOT RULE OUT ISOLATED SEVERE ANYWHERE IN
CENTRAL ILLINOIS...BOTH SUNDAY AND MONDAY. SIMILAR SYNOPTIC AND
MESO-SCALE CONDITIONS WILL CONTINUE BOTH DAYS...SO WILL KEEP
CHANCE POPS IN MOST AREAS FOR THE STORM CLUSTERS THAT EVENTUALLY
DEVELOP. PRECIPITABLE WATER VALUES DROP OFF SLIGHTLY TO 1.5 INCHES
BOTH DAYS...BUT FLASH FLOODING WILL REMAIN A CONCERN WITH ANY
STORMS THROUGH MONDAY.

TUESDAY HAS CONTINUED TO SHOW A DOWNWARD TREND IN STORM COVERAGE
IN THE MODELS...MAINLY DUE TO AN EASTWARD DEPARTURE OF THE UPPER
LEVEL ENERGY AND STORMS CONFINED FARTHER NORTH CLOSER TO THE WARM
FRONT. THEREFORE...WE KEPT THE SLIGHT CHC POPS IN THE NE HALF FOR
NOW.

HIGH HEAT AND HUMIDITY WILL REMAIN A PROMINENT WEATHER FEATURE
OVER THE SHORT TERM...BUT NO HEAT ADVISORIES ARE ANTICIPATED AS
HEAT INDEX READINGS TOP OUT BETWEEN 95 AND 100. 105 TRIGGERS AN
ADVISORY. STILL, VERY UNCOMFORTABLE CONDITIONS ARE EXPECTED UNTIL
WE FINALLY GET A COLD FRONT THROUGH HERE...POSSIBLY THURSDAY NIGHT
INTO FRIDAY.

LONG TERM...WEDNESDAY THROUGH SATURDAY.

WEDNESDAY MAY SEE AN INCREASE IN STORM DEVELOPMENT JUST TO THE
WEST OF OUR COUNTIES...WITH AN APPROACHING SURFACE TROUGH PER THE
12Z GFS. THE 12Z ECMWF IS LESS PROGRESSIVE WITH THAT SURFACE
FEATURE...AND KEEPS STORMS AT BAY UNTIL WED NIGHT. WE KEPT ONLY
SLIGHT CHANCE POPS WED AS A RESULT...WITH CHANCE POPS WED NIGHT
AND THURSDAY AS THAT TROUGH AND UPPER SHORT WAVE PROGRESS ACROSS
THE AREA.

A BETTER CHANCE OF STORMS SHOULD COME WITH THE COLD FRONTAL
PASSAGE THURSDAY NIGHT INTO FRIDAY. THE 12Z GFS AND 12Z ECMWF BOTH
SHOW SIMILAR TIMING OF THAT FEATURE...BUT DIFFER ON CONVECTIVE
INITIATION AND COVERAGE...WITH THE GFS MORE AGGRESSIVE WITH STORMS
DURING THAT TRANSITION PERIOD. WE KEPT CHANCE POPS EVERYWHERE THURSDAY
NIGHT AND IN THE SOUTHEAST FRIDAY AS THE FRONT DEPARTS.

COOLER AND LESS HUMID AIR SHOULD BEGIN TO ARRIVE ON FRIDAY...WITH
HIGHS DOWN IN THE MID 80S...LOWS FRIDAY NIGHT IN THE MID 60S...AND
HIGHS SATURDAY IN THE UPPER 70S TO AROUND 80. DEWPOINTS SHOULD
SLIP BACK INTO THE UPPER 50S BY SATURDAY AS WELL.

SHIMON
&&

.AVIATION...
ISSUED 1258 PM CDT SAT JUN 22 2013

OUTFLOW BOUNDARY PUSHING THROUGH THE EASTERN TERMINAL WILL PRODUCE
HIGHEST COVERAGE TSRA EARLY THIS AFTERNOON AFFECTING CMI AND
POSSIBLY DEC. VERY HEAVY RAIN RATES BRINGING VSBYS DOWN BELOW 1SM
IN HEAVIER STORMS. OTHERWISE ONLY ISOLATED ACTIVITY EXPECTED
FARTHER WEST AND HAVE CARRIED VCTS THROUGH AFTERNOON. AFTER THIS
SYSTEM PUSHES SOUTH NOT MUCH FOCUS FOR ADDITIONAL STORMS INTO
SUNDAY MORNING AND MAINLY VFR SKIES EXPECTED. LATER FORECASTS WILL
ADDRESS POSSIBLE MVFR FOG THAT COULD DEVELOP LATE TONIGHT IN
LIGHTER WIND REGIME. SOUTHWEST WINDS WILL PICK UP OVER 10 KTS
AFTER 14Z/SUN.

25
&&

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

Hazardous weather outlook, Jun 22, 11:44 AM CDT, 3 hours 18 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE LINCOLN IL
1144 AM CDT SAT JUN 22 2013

ILZ027>031-036-037-040-041-047-231645-
CASS-FULTON-KNOX-MARSHALL-MASON-PEORIA-SCHUYLER-STARK-TAZEWELL-
WOODFORD-
1144 AM CDT SAT JUN 22 2013

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL
ILLINOIS.

.DAY ONE...THIS AFTERNOON AND TONIGHT

ISOLATED THUNDERSTORMS WILL BE POSSIBLE ACROSS THE AREA TODAY INTO
EARLY TONIGHT. THE THREAT OF ORGANIZED SEVERE STORMS IS LOW...HOWEVER
SOME OF THE STRONGER STORMS WILL BE CAPABLE OF PRODUCING GUSTY
WINDS...SMALL HAIL...TORRENTIAL RAINFALL AND FREQUENT CLOUD TO GROUND
LIGHTNING.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY

THERE WILL BE A CHANCE FOR THUNDERSTORMS LATE SUNDAY NIGHT THROUGH
MONDAY...AND AGAIN WEDNESDAY NIGHT THROUGH THURSDAY NIGHT.

FLOODING WILL CONTINUE ALONG THE ILLINOIS RIVER DOWNSTREAM OF
PEORIA FOR THE NEXT SEVERAL DAYS.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT ANTICIPATED THROUGH TONIGHT.

ILZ038-042>046-048>057-061-231645-
CHAMPAIGN-CHRISTIAN-COLES-DE WITT-DOUGLAS-EDGAR-LOGAN-MACON-
MCLEAN-MENARD-MORGAN-MOULTRIE-PIATT-SANGAMON-SCOTT-SHELBY-
VERMILION-
1144 AM CDT SAT JUN 22 2013

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

.DAY ONE...THIS AFTERNOON AND TONIGHT

ISOLATED TO WIDELY SCATTERED THUNDERSTORMS WILL BE POSSIBLE THROUGH
EARLY TONIGHT. THE THREAT OF ORGANIZED SEVERE STORMS IS LOW...HOWEVER
SOME OF THE STRONGER STORMS WILL BE CAPABLE OF PRODUCING GUSTY
WINDS...SMALL HAIL...TORRENTIAL RAINFALL AND FREQUENT CLOUD TO
GROUND LIGHTNING.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY

AN ISOLATED THUNDERSTORM WILL BE POSSIBLE SUNDAY AFTERNOON. THERE
WILL BE A CHANCE FOR THUNDERSTORMS AGAIN MONDAY INTO MONDAY EVENING
AND AGAIN WEDNESDAY NIGHT THROUGH THURSDAY NIGHT.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT ANTICIPATED THROUGH TONIGHT.

ILZ062-063-066>068-071>073-231645-
CLARK-CLAY-CRAWFORD-CUMBERLAND-EFFINGHAM-JASPER-LAWRENCE-RICHLAND-
1144 AM CDT SAT JUN 22 2013

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

.DAY ONE...THIS AFTERNOON AND TONIGHT

AN ISOLATED THUNDERSTORM WILL BE POSSIBLE MAINLY THIS AFTERNOON
INTO EARLY THIS EVENING. THE THREAT OF ORGANIZED SEVERE STORMS IS
LOW...HOWEVER SOME OF THE STRONGER STORMS WILL BE CAPABLE OF
PRODUCING GUSTY WINDS...SMALL HAIL...TORRENTIAL RAINFALL AND
FREQUENT CLOUD TO GROUND LIGHTNING.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY

ISOLATED THUNDERSTORMS WILL BE POSSIBLE AGAIN SUNDAY AFTERNOON
WITH ANOTHER THREAT FOR THUNDERSTORMS WEDNESDAY NIGHT THROUGH
FRIDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT ANTICIPATED THROUGH TONIGHT.

In the hours before

Local storm report, Jun 22, 9:34 AM CDT, 5 hours 28 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LINCOLN IL
934 AM CDT SAT JUN 22 2013

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

0600 AM     HEAVY RAIN       4 E TREMONT             40.53N 89.41W
06/22/2013  M1.65 INCH       TAZEWELL           IL   COCORAHS

            24-HOUR RAINFALL

0700 AM     HEAVY RAIN       2 WNW DANVERS           40.54N 89.21W
06/22/2013  M1.47 INCH       MCLEAN             IL   COCORAHS

            24-HOUR RAINFALL

0700 AM     HEAVY RAIN       1 SSE MORTON            40.60N 89.46W
06/22/2013  M1.23 INCH       TAZEWELL           IL   COCORAHS

            24-HOUR RAINFALL

0700 AM     HEAVY RAIN       7 W ATLANTA             40.26N 89.36W
06/22/2013  M1.33 INCH       LOGAN              IL   COCORAHS

            24-HOUR RAINFALL

0700 AM     HEAVY RAIN       1 N MACKINAW            40.55N 89.36W
06/22/2013  M1.43 INCH       TAZEWELL           IL   CO-OP OBSERVER

            24-HOUR RAINFALL

0700 AM     HEAVY RAIN       MORTON                  40.61N 89.47W
06/22/2013  M1.13 INCH       TAZEWELL           IL   CO-OP OBSERVER

            24-HOUR RAINFALL

0700 AM     HEAVY RAIN       ROBINSON                39.01N 87.74W
06/22/2013  M1.78 INCH       CRAWFORD           IL   CO-OP OBSERVER

            24-HOUR RAINFALL

0800 AM     HEAVY RAIN       LACON                   41.02N 89.41W
06/22/2013  M1.12 INCH       MARSHALL           IL   CO-OP OBSERVER

            24-HOUR RAINFALL

0800 AM     HEAVY RAIN       4 N CARLOCK             40.64N 89.13W
06/22/2013  M1.01 INCH       WOODFORD           IL   COCORAHS

            24-HOUR RAINFALL

0800 AM     HEAVY RAIN       1 E HEYWORTH            40.31N 88.96W
06/22/2013  M1.22 INCH       MCLEAN             IL   COCORAHS

            24-HOUR RAINFALL

0800 AM     HEAVY RAIN       MINONK                  40.90N 89.04W
06/22/2013  M1.36 INCH       WOODFORD           IL   CO-OP OBSERVER

            24-HOUR RAINFALL

&&

LAUFENBERG

Local storm report, Jun 22, 12:53 PM CDT, 2 hours 9 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LINCOLN IL
1253 PM CDT SAT JUN 22 2013

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

1245 PM     HEAVY RAIN       1 WSW CHAMPAIGN         40.11N 88.28W
06/22/2013  M1.20 INCH       CHAMPAIGN          IL   COCORAHS

            RAIN FELL IN 40 MINUTES

&&

25

Local storm report, Jun 22, 1:28 PM CDT, 1 hour 34 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LINCOLN IL
128 PM CDT SAT JUN 22 2013

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

0120 PM     HEAVY RAIN       1 N SAVOY               40.08N 88.25W
06/22/2013  M1.60 INCH       CHAMPAIGN          IL   MESONET

            RAIN FELL IN PAST HOUR. SWOP REPORT.

&&

25

Local storm report, Jun 22, 2:04 PM CDT, 58 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LINCOLN IL
204 PM CDT SAT JUN 22 2013

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

0145 PM     HEAVY RAIN       4 NNE WHITE HEATH       40.14N 88.47W
06/22/2013  M2.02 INCH       PIATT              IL   COCORAHS

            90 MINUTE TOTAL BUT MOST FELL IN 40 MINUTES

0200 PM     HEAVY RAIN       PANA                    39.39N 89.08W
06/22/2013  M1.19 INCH       CHRISTIAN          IL   MESONET

            RAIN TOTAL SINCE 1230. SWOP REPORT.

0150 PM     HEAVY RAIN       1 SSW CHAMPAIGN         40.10N 88.27W
06/22/2013  M1.63 INCH       CHAMPAIGN          IL   COCORAHS

            RAIN FELL IN TWO HOURS

&&

25

Special weather statement, Jun 22, 3:02 PM CDT, 0 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE LINCOLN IL
302 PM CDT SAT JUN 22 2013

ILZ042-043-051-053-222045-
DE WITT-LOGAN-MACON-SANGAMON-
302 PM CDT SAT JUN 22 2013

...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN SANGAMON...
NORTHWESTERN MACON...SOUTHEASTERN LOGAN AND SOUTHWESTERN DE WITT
COUNTIES UNTIL 345 PM CDT...

AT 256 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM NEAR LATHAM...OR 15 MILES NORTHWEST OF DECATUR.
THIS STORM WAS NEARLY STATIONARY.

NICKEL SIZE HAIL...AND WINDS AROUND 50 MPH ARE EXPECTED WITH THIS
STORM.  TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THIS STORM.

LOCATIONS IMPACTED INCLUDE...
  WARRENSBURG...
  KENNEY...

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 4009 8885 3986 8900 3991 8933 4018 8921
TIME...MOT...LOC 2002Z 273DEG 2KT 3998 8916

CHS

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 22, 11:19 AM CDT	Severe Thunderstorm Warning	ILX	Champaign, Vermilion	56 min
Jun 22, 11:38 AM CDT	Flash Flood Warning	ILX	Champaign, Vermilion	4 hr
Jun 22, 12:45 PM CDT	Areal Flood Advisory	ILX	Champaign, Piatt	4 hr
Jun 22, 2:24 PM CDT	Areal Flood Advisory	ILX	Clark, Coles, Cumberland, Edgar, Moultrie, Shelby	4 hr
Jun 22, 3:06 PM CDT	Flash Flood Warning	ILX	DeWitt, Logan, Macon	4 hr
Jun 22, 5:03 PM CDT	Flash Flood Warning	ILX	Clay, Crawford, Effingham, Jasper, Richland, Shelby	6 hr

Nearby

Special Weather Statements in Illinois, 2013 Every special weather statement in 2013

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.