Alert archive / Illinois / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 14, NWS Paducah, KY

April 3, 2015Jackson County, Williamson County, Illinois

NWS Paducah, KY issued this severe thunderstorm warning at Apr 3, 2015, 1:04 AM CDT for Jackson County, Williamson County, Illinois. It was in force for 26 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Apr 3, 2015, 1:04 AM CDT (06:04 UTC)
Expired: Apr 3, 2015, 1:30 AM CDT
In force: 26 min
Issued by: NWS Paducah, KY
Area: Storm-based polygon
Hail: 1.0 in
Wind: 50.0 mph

Counties Jackson County, IL, Williamson County, IL

The radar

The Paducah radar (KPAH), 84 km from the middle of the area, began a volume at 06:04 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Apr 2, 10:41 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 00:00Z, 6.1 hours before the alert went out and 270 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: 1389 m above ground
0-6 km bulk shear: 59 kt
0-1 km storm-relative helicity: -7 m²/s²
0-3 km storm-relative helicity: 55 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Paducah, KY wrote its last area forecast discussion before this severe thunderstorm warning went out at Apr 3, 12:04 AM CDT, 1 hour earlier.

Area forecast discussion, Apr 3, 12:04 AM CDT, 1 hour before

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Hazardous weather outlook, Apr 2, 10:50 PM CDT, 2 hours 14 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE PADUCAH KY
1050 PM CDT THU APR 2 2015

ILZ075>078-080>094-INZ081-082-085>088-KYZ001>022-MOZ076-086-087-
100-107>112-114-031000-
JEFFERSON-WAYNE IL-EDWARDS-WABASH-PERRY IL-FRANKLIN-HAMILTON-
WHITE-JACKSON-WILLIAMSON-SALINE-GALLATIN-UNION IL-JOHNSON-POPE-
HARDIN-ALEXANDER-PULASKI-MASSAC-GIBSON-PIKE-POSEY-VANDERBURGH-
WARRICK-SPENCER-FULTON-HICKMAN-CARLISLE-BALLARD-MCCRACKEN-GRAVES-
LIVINGSTON-MARSHALL-CALLOWAY-CRITTENDEN-LYON-TRIGG-CALDWELL-
UNION KY-WEBSTER-HOPKINS-CHRISTIAN-HENDERSON-DAVIESS-MCLEAN-
MUHLENBERG-TODD-PERRY MO-BOLLINGER-CAPE GIRARDEAU-WAYNE MO-CARTER-
RIPLEY-BUTLER-STODDARD-SCOTT-MISSISSIPPI-NEW MADRID-
1050 PM CDT THU APR 2 2015

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHERN
ILLINOIS...SOUTHWEST INDIANA...WESTERN KENTUCKY AND SOUTHEAST
MISSOURI.

.DAY ONE...TONIGHT

THUNDERSTORMS WILL BECOME MORE WIDESPREAD OVERNIGHT. A FEW MAY
BECOME SEVERE. PRIMARY THREATS INCLUDE LARGE HAIL AND DAMAGING
WINDS. A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL 6 AM FOR
SOUTHEAST MISSOURI...SOUTHERN ILLINOIS...AND A SMALL PART OF
WESTERN KENTUCKY. REFER TO THE WATCH FOR DETAILS.

HEAVY RAINFALL AND LOCALIZED FLOODING WILL ALSO BE A CONCERN
OVERNIGHT. A FLOOD WATCH REMAINS IN EFFECT. REFER TO THE FLOOD
WATCH FOR ADDITIONAL DETAILS.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY

A PERIOD OR TWO OF THUNDERSTORMS ARE FORECAST FRIDAY. A FEW
STORMS MAY BECOME SEVERE FROM LATE FRIDAY MORNING INTO THE
AFTERNOON... ESPECIALLY ACROSS WESTERN KENTUCKY. THE SEVERE
POTENTIAL OVER SOUTHEAST MISSOURI AND FAR SOUTHERN ILLINOIS IS
MORE UNCERTAIN AND HIGHLY CONTINGENT ON IMPACTS FROM MORNING
ACTIVITY. WHERE SEVERE STORMS OCCUR...PRIMARY CONCERNS ARE
DAMAGING WINDS AND LARGE HAIL. A FEW TORNADOES ARE ALSO POSSIBLE.

LOCALLY HEAVY RAINFALL WILL CONTINUE WITH THUNDERSTORMS ON A MORE
INTERMITTENT BASIS THROUGH FRIDAY. A FLOOD WATCH IS IN EFFECT
THROUGH 7 PM FRIDAY EVENING. SEE THE FLOOD WATCH FOR ADDITIONAL
INFORMATION.

THUNDERSTORMS ARE ALSO POSSIBLE SUNDAY NIGHT THROUGH WEDNESDAY.
WIDESPREAD SEVERE WEATHER IS NOT EXPECTED.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE REQUESTED THIS EVENING...THEN AGAIN FROM
LATE FRIDAY MORNING INTO THE AFTERNOON.

In the hours before

Special weather statement, Apr 2, 7:31 PM CDT, 5 hours 33 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PADUCAH KY
731 PM CDT THU APR 2 2015

ILZ076-030100-
WAYNE IL-
731 PM CDT THU APR 2 2015

...SIGNIFICANT WEATHER ADVISORY FOR WAYNE COUNTY UNTIL 800 PM CDT...

AT 730 PM CDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM 7
MILES NORTH OF WAYNE CITY...OR 13 MILES WEST OF FAIRFIELD...MOVING
EAST AT 50 MPH.

DIME SIZE HAIL AND WINDS IN EXCESS OF 40 MPH WILL BE POSSIBLE WITH
THIS STORM.

LOCATIONS IMPACTED INCLUDE...
FAIRFIELD...WAYNE CITY...CISNE...JEFFERSONVILLE...SIMS...MOUNT
ERIE...KEENES...JOHNSONVILLE AND GOLDEN GATE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THIS STORM...AND MAY LEAD
TO FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.

FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM.
LIGHTNING CAN STRIKE 15 MILES AWAY FROM A THUNDERSTORM. SEEK A SAFE
SHELTER INSIDE A BUILDING OR VEHICLE.

&&

LAT...LON 3830 8816 3834 8869 3851 8869 3860 8823
      3860 8817
TIME...MOT...LOC 0030Z 265DEG 42KT 3845 8860

DRS

Local storm report, Apr 2, 11:38 PM CDT, 1 hour 26 minutes before

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Local storm report, Apr 3, 12:39 AM CDT, 25 minutes before

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Local storm report, Apr 3, 12:42 AM CDT, 22 minutes before

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Special weather statement, Apr 3, 12:43 AM CDT, 21 minutes before

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The office that day

Everything else NWS Paducah, KY issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 3, 3:01 AM CDT	Areal Flood Advisory	PAH	Crittenden, Daviess, Henderson, Hopkins, McLean, Union and 1 more	3 hr
Apr 3, 8:14 AM CDT	Severe Thunderstorm Warning	PAH	Ballard, Carlisle	31 min
Apr 3, 8:32 AM CDT	Severe Thunderstorm Warning	PAH	Carlisle, Graves	28 min
Apr 3, 8:49 AM CDT	Severe Thunderstorm Warning	PAH	Livingston, McCracken, Marshall	26 min
Apr 3, 10:52 AM CDT	River Flood Warning	PAH	Muhlenberg	8 days
Apr 3, 11:08 AM CDT	River Flood Warning	PAH	Daviess, Henderson	21 days
Apr 3, 11:08 AM CDT	River Flood Warning	PAH	Henderson, Union	22 days
Apr 3, 11:08 AM CDT	River Flood Warning	PAH	Union	24 days
Apr 3, 11:08 AM CDT	River Flood Warning	PAH	Crittenden, Union	26 days
Apr 3, 12:50 PM CDT	Severe Thunderstorm Warning	PAH	Henderson, Union	25 min
Apr 3, 3:32 PM CDT	Severe Thunderstorm Warning	PAH	Ballard, McCracken	28 min
Apr 2, 7:31 PM CDT	Special Weather Statement	PAH	Wayne	29 min
Apr 3, 12:25 AM CDT	Areal Flood Advisory	PAH	Franklin, Gallatin, Hamilton, Jackson, Saline, White and 1 more	3 hr
Apr 3, 12:43 AM CDT	Special Weather Statement	PAH	Franklin	32 min
Apr 3, 2:31 AM CDT	Severe Thunderstorm Warning	PAH	Gallatin, Saline	29 min
Apr 3, 10:13 AM CDT	River Flood Warning	PAH	Gallatin, Wabash, White	7 days
Apr 3, 11:19 AM CDT	Severe Thunderstorm Warning	PAH	Alexander, Pulaski, Union	41 min
Apr 3, 11:51 AM CDT	Severe Thunderstorm Warning	PAH	Gallatin, Pope, Saline	24 min
Apr 3, 11:58 AM CDT	Severe Thunderstorm Warning	PAH	Johnson, Pope, Saline	28 min
Apr 3, 1:38 AM CDT	Severe Thunderstorm Warning	PAH	Carter, Ripley	40 min
Apr 3, 5:58 AM CDT	Severe Thunderstorm Warning	PAH	Butler, Wayne	21 min

Nearby

Severe Thunderstorm Warnings in Illinois, 2015 Every severe thunderstorm warning in 2015

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.