Alert archive / Illinois / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 167, NWS Paducah, KY

April 27, 2011Jackson County, Union County, Illinois

NWS Paducah, KY issued this severe thunderstorm warning at Apr 27, 2011, 2:12 PM CDT for Jackson County, Union County, Illinois. It was in force for 33 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 27, 2011, 2:12 PM CDT (19:12 UTC)
Expired: Apr 27, 2011, 2:45 PM CDT
In force: 33 min
Issued by: NWS Paducah, KY
Area: Storm-based polygon
Hail: 1.0 in
Wind: 50.0 mph

Counties Jackson County, IL, Union County, IL

The radar

The Paducah radar (KPAH), 79 km from the middle of the area, began a volume at 19:14 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 27, 12:42 PM CDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 7.2 hours before the alert went out and 287 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: 791 m above ground
0-6 km bulk shear: 56 kt
0-1 km storm-relative helicity: 64 m²/s²
0-3 km storm-relative helicity: 93 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 27, 1:16 PM CDT, 56 minutes earlier.

Area forecast discussion, Apr 27, 1:16 PM CDT, 56 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PADUCAH KY
116 PM CDT WED APR 27 2011

.DISCUSSION...
SLIGHT RISK OF SEVERE IS FOR PRIMARY HAZARD OF LARGE HAIL GIVEN
COOLING MID TROPOSPHERIC TEMPS...AIDED/ABETTED BY STEEP MID LEVEL
LAPSE RATES AS LOW PRESSURE SYSTEM LIFTS OVERHEAD AND SWEEPS THRU.
WILL HAVE TO WATCH DEVELOPING HELICITY PROFILES WITH LOW INCOMING
IN CASE TORNADIC THREAT DEVELOPS...SPC BEING ON TOP OF THAT
ALREADY PER EARLIER CONFERENCE CALL.

GRADIENT WINDS WILL ENHANCE WITH SURFACE LOW MOVING THRU AND
SHOULD SEE WINDS SHIFTING FROM SLYS TO WSLYS/NWLYS WITH TIME. SOME
GUSTS TO NEAR ADVISORY THRESHOLDS MAY BE POSSIBLE.

ANOTHER 1 TO POTENTIALLY 1.5" OF RAINFALL CAN BE EXPECTED WITH THE
SYSTEM PASSAGE THROUGH THIS EVENING. WE WILL THEREFORE LEAVE THE
FFA RUNNING THRU ITS INHERITED EXPIRATION TIME OF 700 PM...AND
CONTINUE OUTLOOK/FORECAST FOR HEAVY RAIN AS WELL.

CLEARING/IMPROVING CONDITIONS EXPECTED LATER TONIGHT-TOMORROW AND
SHOULD LAST INTO/THRU MUCH OF THE DAY SATURDAY...OFFERING MUCH
NEEDED REPRIEVE FROM SVR WX/HEAVY RAIN. SAVE EXCEPTION IS SMALLISH
CYCLONIC FLOW ENERGY POPS FOR THURSDAY PM/EVENING...BUT QPF SHOULD
BE LIGHT.

NEXT BEST CHC PCPN IS LATER IN THE WEEKEND...SPECIFICALLY SAT
NIGHT-SUN NIGHT TIME FRAME WITH ANOTHER SYSTEM PASSAGE AND
POTENTIALLY AN INCH OR TWO MORE OF RAINFALL. HAVE MENTIONED THIS
IN HWO AND WILL BE SOMETHING TO KEEP AN EYE UPON WITH REGARD TO
CONTINUED FLOODING.

&&

.AVIATION...
CONVECTIVE OUTBREAK WITH SYSTEM PASSAGE THIS PM WILL LOWER CIGS
FROM MVFR TO IFR AT TIMES. IFR VSBYS IN HEAVY RAIN ARE POSSIBLE
AND HAIL IS THE SVR WX THREAT...THOUGH NOT IN TAFS (YET). AS THE
SURFACE WAVE PASSES...GRADIENT WINDS COULD YIELD SOME GUSTS NEAR
30 KTS AT TIMES...WITH WINDS SHIFTING FROM SOUTHERLYS TO WESTERLYS
OR NORTHWESTERLYS OVER THE COURSE OF THE EVENING. GRADUAL
IMPROVEMENT BACK TO VFR EXPECTED LATE TONIGHT INTO TOMORROW AS THE
SYSTEM PUSHES EAST.

&&

.PAH WATCHES/WARNINGS/ADVISORIES...
KY...FLASH FLOOD WATCH UNTIL 7 PM CDT THIS EVENING FOR BALLARD-
     CALDWELL-CALLOWAY-CARLISLE-CHRISTIAN-CRITTENDEN-DAVIESS-
     FULTON-GRAVES-HENDERSON-HICKMAN-HOPKINS-LIVINGSTON-LYON-
     MARSHALL-MCCRACKEN-MCLEAN-MUHLENBERG-TODD-TRIGG-UNION KY-
     WEBSTER.

MO...FLASH FLOOD WATCH UNTIL 7 PM CDT THIS EVENING FOR BOLLINGER-
     BUTLER-CAPE GIRARDEAU-CARTER-MISSISSIPPI-NEW MADRID-PERRY
     MO-RIPLEY-SCOTT-STODDARD-WAYNE MO.

IL...FLASH FLOOD WATCH UNTIL 7 PM CDT THIS EVENING FOR ALEXANDER-
     EDWARDS-FRANKLIN-GALLATIN-HAMILTON-HARDIN-JACKSON-JEFFERSON-
     JOHNSON-MASSAC-PERRY IL-POPE-PULASKI-SALINE-UNION IL-WABASH-
     WAYNE IL-WHITE-WILLIAMSON.

IN...FLASH FLOOD WATCH UNTIL 7 PM CDT THIS EVENING FOR GIBSON-PIKE-
     POSEY-SPENCER-VANDERBURGH-WARRICK.

&&

Hazardous weather outlook, Apr 27, 12:46 PM CDT, 1 hour 26 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE PADUCAH KY
1246 PM CDT WED APR 27 2011

ILZ075>078-080>094-INZ081-082-085>088-KYZ001>022-MOZ076-086-087-
100-107>112-114-281000-
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-
1246 PM CDT WED APR 27 2011

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

.DAY ONE...THIS AFTERNOON AND TONIGHT

A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL 700 PM FOR WESTERN
KENTUCKY...FAR SOUTHERN ILLINOIS...AND MOST OF SOUTHEAST MISSOURI.
LARGE HAIL IS THE PRIMARY HAZARD...THOUGH ISOLATED DAMAGING WIND
GUSTS AND TORNADOES ARE POSSIBLE. SEE THE WATCH FOR DETAILS. A
SLIGHT RISK OF SEVERE THUNDERSTORMS EXISTS FOR THE ENTIRE AREA.

THE POTENTIAL FOR MAJOR TO CATASTROPHIC FLASH FLOODING AND RIVER
FLOODING WILL CONTINUE. A FLASH FLOOD WATCH CONTINUES THROUGH
THIS EVENING. THIS IS A PARTICULARLY DANGEROUS SITUATION. PLEASE
REFER TO THE ANY ONGOING FLOOD WARNINGS AND STATEMENTS FOR MORE
DETAILS.

THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS TODAY...MAINLY
ALONG AND SOUTH OF THE OHIO RIVER. LARGE HAIL...DAMAGING WIND
GUSTS...AND ISOLATED TORNADOES ARE ALL POSSIBLE WITH THE STRONGER
STORMS.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

THE POTENTIAL FOR MAJOR TO CATASTROPHIC RIVER FLOODING WILL
CONTINUE THROUGH MUCH OF THE PERIOD.

IN ADDITION...THERE IS SOME POTENTIAL FOR ANOTHER ROUND OF HEAVY
RAINS LATER IN THE WEEKEND...ESPECIALLY SATURDAY NIGHT THROUGH
SUNDAY NIGHT.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION FOR THE SEVERE THUNDERSTORM WATCH IS REQUESTED.

In the hours before

Local storm report, Apr 27, 1:31 PM CDT, 41 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PADUCAH KY
131 PM CDT WED APR 27 2011

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

0110 PM     HAIL             WAPPAPELLO              36.94N 90.27W
04/27/2011  E1.00 INCH       WAYNE              MO   OTHER FEDERAL

            AT WAPPAPELLO DAM FROM CORPS OF ENGINEERS

&&

RST

Local storm report, Apr 27, 1:41 PM CDT, 31 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PADUCAH KY
141 PM CDT WED APR 27 2011

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

0130 PM     HAIL             ZALMA                   37.14N 90.08W
04/27/2011  E1.00 INCH       BOLLINGER          MO   TRAINED SPOTTER

            DIME TO QUARTER SIZE HAIL

&&

RST

Local storm report, Apr 27, 1:56 PM CDT, 16 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PADUCAH KY
156 PM CDT WED APR 27 2011

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

0154 PM     HAIL             JACKSON                 37.38N 89.65W
04/27/2011  E1.00 INCH       CAPE GIRARDEAU     MO   TRAINED SPOTTER

&&

RST

Local storm report, Apr 27, 1:59 PM CDT, 13 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PADUCAH KY
159 PM CDT WED APR 27 2011

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

0158 PM     HAIL             JACKSON                 37.38N 89.65W
04/27/2011  E1.50 INCH       CAPE GIRARDEAU     MO   EMERGENCY MNGR

&&

RST

Local storm report, Apr 27, 2:02 PM CDT, 10 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PADUCAH KY
202 PM CDT WED APR 27 2011

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

0200 PM     HAIL             FRUITLAND               37.45N 89.64W
04/27/2011  E1.75 INCH       CAPE GIRARDEAU     MO   EMERGENCY MNGR

&&

RST

Local storm report, Apr 27, 2:04 PM CDT, 8 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PADUCAH KY
204 PM CDT WED APR 27 2011

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

0203 PM     HAIL             JACKSON                 37.38N 89.65W
04/27/2011  E1.00 INCH       CAPE GIRARDEAU     MO   TRAINED SPOTTER

&&

RST

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 26, 7:02 PM CDT	Tornado Warning	PAH	Caldwell, Crittenden, Livingston, Lyon, Marshall	28 min
Apr 26, 7:14 PM CDT	Severe Thunderstorm Warning	PAH	Graves	46 min
Apr 26, 7:18 PM CDT	Severe Thunderstorm Warning	PAH	Calloway, Graves, Marshall	27 min
Apr 26, 7:28 PM CDT	Tornado Warning	PAH	Calloway, Marshall	32 min
Apr 26, 7:32 PM CDT	Severe Thunderstorm Warning	PAH	Crittenden, Livingston, Lyon, McCracken, Marshall	28 min
Apr 26, 7:40 PM CDT	Tornado Warning	PAH	Caldwell, Christian, Lyon, Trigg	50 min
Apr 26, 7:49 PM CDT	Flash Flood Warning	PAH	Ballard, Caldwell, Calloway, Carlisle, Crittenden, Fulton and 7 more	6 hr
Apr 26, 7:55 PM CDT	Severe Thunderstorm Warning	PAH	Fulton, Graves, Hickman	35 min
Apr 26, 7:59 PM CDT	Tornado Warning	PAH	Caldwell, Lyon, Marshall, Trigg	46 min
Apr 26, 8:24 PM CDT	Tornado Warning	PAH	Caldwell, Christian, Hopkins	51 min
Apr 26, 8:41 PM CDT	Severe Thunderstorm Warning	PAH	Caldwell, Hopkins	34 min
Apr 26, 8:46 PM CDT	Tornado Warning	PAH	Christian, Hopkins, Muhlenberg	44 min
Apr 26, 9:04 PM CDT	Flash Flood Warning	PAH	Christian, Henderson, Hopkins, McLean, Muhlenberg, Todd and 2 more	6 hr
Apr 26, 9:06 PM CDT	Severe Thunderstorm Warning	PAH	Hopkins, McLean, Webster	24 min
Apr 26, 9:14 PM CDT	Tornado Warning	PAH	Hopkins, McLean, Muhlenberg	46 min
Apr 26, 9:39 PM CDT	Severe Thunderstorm Warning	PAH	Daviess, Hopkins, McLean, Muhlenberg	51 min
Apr 26, 9:54 PM CDT	Flash Flood Warning	PAH	Daviess	6 hr
Apr 26, 10:24 PM CDT	Severe Thunderstorm Warning	PAH	Daviess	29 min
Apr 26, 11:44 PM CDT	Tornado Warning	PAH	Todd	27 min
Apr 27, 1:23 AM CDT	Severe Thunderstorm Warning	PAH	Christian, Todd	37 min
Apr 27, 9:10 AM CDT	Areal Flood Warning	PAH	Ballard, Caldwell, Calloway, Carlisle, Christian, Crittenden and 16 more	48 hr
Apr 27, 1:46 PM CDT	Flash Flood Warning	PAH	Caldwell, Calloway, Christian, Hopkins, McLean, Marshall and 3 more	5 hr
Apr 27, 4:43 PM CDT	Flash Flood Warning	PAH	Caldwell, Hopkins	6 hr
Apr 27, 5:36 PM CDT	Flash Flood Warning	PAH	Daviess, Henderson, Union	6 hr
Apr 27, 1:49 PM CDT	Severe Thunderstorm Warning	PAH	Union	26 min
Apr 27, 2:33 PM CDT	Severe Thunderstorm Warning	PAH	Franklin, Jackson, Jefferson, Perry, Williamson	27 min
Apr 27, 3:59 PM CDT	Tornado Warning	PAH	Alexander	31 min
Apr 27, 4:16 PM CDT	Tornado Warning	PAH	Jackson, Union	29 min
Apr 27, 4:22 PM CDT	Flash Flood Warning	PAH	Franklin, Jackson, Jefferson, Johnson, Perry, Union and 1 more	6 hr
Apr 27, 4:25 PM CDT	Tornado Warning	PAH	Alexander, Pulaski, Union	35 min
Apr 27, 4:44 PM CDT	Tornado Warning	PAH	Jackson, Union	31 min
Apr 27, 4:56 PM CDT	Tornado Warning	PAH	Franklin, Johnson, Pulaski, Union, Williamson	49 min
Apr 27, 5:35 PM CDT	Tornado Warning	PAH	Pope, Saline	16 min
Apr 26, 7:04 PM CDT	Flash Flood Warning	PAH	Butler, Carter, New Madrid, Ripley, Stoddard, Wayne	6 hr
Apr 26, 7:05 PM CDT	Severe Thunderstorm Warning	PAH	New Madrid, Scott, Stoddard	25 min
Apr 26, 7:36 PM CDT	Flash Flood Warning	PAH	Butler	12 hr
Apr 27, 2:30 AM CDT	Flash Flood Warning	PAH	Butler	12 hr
Apr 27, 9:03 AM CDT	River Flood Warning	PAH	Carter	82 min
Apr 27, 12:31 PM CDT	Severe Thunderstorm Warning	PAH	Carter, Ripley	29 min
Apr 27, 12:42 PM CDT	Severe Thunderstorm Warning	PAH	Butler, Ripley	33 min
Apr 27, 12:58 PM CDT	Severe Thunderstorm Warning	PAH	Butler, Carter, Wayne	32 min
Apr 27, 1:01 PM CDT	Severe Thunderstorm Warning	PAH	Bollinger, Stoddard, Wayne	29 min
Apr 27, 1:28 PM CDT	Severe Thunderstorm Warning	PAH	Bollinger, Cape Girardeau	32 min
Apr 27, 1:34 PM CDT	Severe Thunderstorm Warning	PAH	Carter	26 min
Apr 27, 1:59 PM CDT	Severe Thunderstorm Warning	PAH	Carter, Wayne	31 min
Apr 27, 2:26 PM CDT	Severe Thunderstorm Warning	PAH	Bollinger, Butler, Stoddard	34 min
Apr 27, 2:30 PM CDT	Severe Thunderstorm Warning	PAH	Wayne	30 min
Apr 27, 2:32 PM CDT	Flash Flood Warning	PAH	Butler	24 hr
Apr 27, 2:53 PM CDT	Severe Thunderstorm Warning	PAH	Wayne	37 min
Apr 27, 3:04 PM CDT	Severe Thunderstorm Warning	PAH	Butler	26 min
Apr 27, 3:21 PM CDT	Tornado Warning	PAH	Butler	24 min
Apr 27, 3:31 PM CDT	Severe Thunderstorm Warning	PAH	Bollinger, Butler, Stoddard	29 min
Apr 27, 3:34 PM CDT	Severe Thunderstorm Warning	PAH	Stoddard	41 min
Apr 27, 3:41 PM CDT	Tornado Warning	PAH	Bollinger	19 min
Apr 27, 3:43 PM CDT	Tornado Warning	PAH	Bollinger, Cape Girardeau	17 min
Apr 27, 3:52 PM CDT	Tornado Warning	PAH	Bollinger, Cape Girardeau, Perry	23 min
Apr 27, 3:55 PM CDT	Tornado Warning	PAH	Bollinger, Cape Girardeau, New Madrid, Scott, Stoddard	35 min
Apr 27, 4:01 PM CDT	Tornado Warning	PAH	Bollinger, Cape Girardeau	14 min

Nearby

Severe Thunderstorm Warnings in Illinois, 2011 Every severe thunderstorm warning in 2011

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.