Alert archive / Illinois / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 72, NWS Paducah, KY

July 10, 20214 counties in Illinois

NWS Paducah, KY issued this severe thunderstorm warning at Jul 10, 2021, 6:00 PM CDT for 4 counties in Illinois. It was in force for 45 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
Jul 10, 2021, 6:00 PM CDT (23:00 UTC)
Expired
Jul 10, 2021, 6:45 PM CDT
In force
45 min
Issued by
NWS Paducah, KY
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Franklin County, IL, Hamilton County, IL, Saline County, IL, Williamson County, IL

The radar

The Paducah radar (KPAH), 83 km from the middle of the area, began a volume at 23:01 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 watch it was issued in

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

IssuedProductOfficeLasted
Jul 10, 2:01 PM CDTSevere Thunderstorm WatchSPC8 hr

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 12:00Z, 11.0 hours before the alert went out and 258 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, Nashville Metro, TN at 12:00Z on 2021-07-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1536 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Nashville Metro, TN at 12:00Z on 2021-07-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 93 square meters per square second.1939Sfc1 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
1536 J/kg
Mixed-layer CIN
-28 J/kg
Mixed-layer LCL
721 m above ground
0-6 km bulk shear
10 kt
0-1 km storm-relative helicity
93 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

The text

As transmitted.

379 
WUUS53 KPAH 102300
SVRPAH
ILC055-065-165-199-102345-
/O.NEW.KPAH.SV.W.0072.210710T2300Z-210710T2345Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Paducah KY
600 PM CDT Sat Jul 10 2021

The National Weather Service in Paducah has issued a

* Severe Thunderstorm Warning for...
  Northeastern Williamson County in southern Illinois...
  Saline County in southern Illinois...
  Southeastern Franklin County in south central Illinois...
  Southern Hamilton County in south central Illinois...

* Until 645 PM CDT.

* At 559 PM CDT, severe thunderstorms were located along a line
  extending from near West Frankfort to near Marion, moving east at
  40 mph.

  HAZARD...60 mph wind gusts and penny size hail.

  SOURCE...Trained weather spotters. Trees were reported down near 
           Bush and Hurst in northwest Williamson County.

  IMPACT...Expect damage to roofs, siding, and trees.

* Severe thunderstorms will be near...
  Pittsburg around 605 PM CDT.
  Thompsonville around 610 PM CDT.

Other locations in the path of these severe thunderstorms include
Galatia, Carrier Mills, Harrisburg and Eldorado.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3796 8837 3760 8838 3760 8856 3771 8899
      3800 8896
TIME...MOT...LOC 2259Z 281DEG 34KT 3792 8890 3778 8892 

HAIL...0.75IN
WIND...60MPH
 
$$

York
1 follow-up statement
729 
WWUS53 KPAH 102324
SVSPAH

Severe Weather Statement
National Weather Service Paducah KY
624 PM CDT Sat Jul 10 2021

ILC055-065-102332-
/O.CAN.KPAH.SV.W.0072.000000T0000Z-210710T2345Z/
Franklin IL-Hamilton IL-
624 PM CDT Sat Jul 10 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN FRANKLIN AND
SOUTHERN HAMILTON COUNTIES IS CANCELLED...
    
The severe thunderstorm which prompted the warning has moved out of 
the warned area. Therefore, the warning has been cancelled.

A Severe Thunderstorm Watch remains in effect until 1000 PM CDT for
southern Illinois.

LAT...LON 3760 8838 3760 8856 3771 8899 3784 8896
      3787 8837
TIME...MOT...LOC 2322Z 303DEG 23KT 3773 8879 

$$

ILC165-199-102345-
/O.CON.KPAH.SV.W.0072.000000T0000Z-210710T2345Z/
Williamson IL-Saline IL-
624 PM CDT Sat Jul 10 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 645 PM CDT
FOR NORTHEASTERN WILLIAMSON AND SALINE COUNTIES...

At 622 PM CDT, a severe thunderstorm was located near the south side 
of Marion, moving east at 25 mph.

HAZARD...60 mph wind gusts and penny size hail.

SOURCE...Radar indicated.

IMPACT...Expect damage to roofs, siding, and trees.

Locations impacted include...
Marion, Harrisburg, Eldorado, Johnston City, Galatia, Pittsburg,
Carrier Mills.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3760 8838 3760 8856 3771 8899 3784 8896
      3787 8837
TIME...MOT...LOC 2322Z 303DEG 23KT 3773 8879 

HAIL...0.75IN
WIND...60MPH
 
$$

York

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 10, 2:21 AM CDTFlash Flood WatchPAHAlexander, Edwards, Franklin, Gallatin, Hamilton, Hardin and 13 more25 hr
Jul 10, 3:23 PM CDTSpecial Weather StatementPAHWhite52 min
Jul 10, 4:36 PM CDTSevere Thunderstorm WarningPAHJefferson, Perry39 min
Jul 10, 5:09 PM CDTSevere Thunderstorm WarningPAHFranklin, Jefferson, Perry36 min
Jul 10, 5:14 PM CDTSpecial Weather StatementPAHJefferson, Wayne46 min
Jul 10, 5:29 PM CDTSpecial Weather StatementPAHJackson, Williamson46 min
Jul 10, 5:40 PM CDTSpecial Weather StatementPAHHamilton, White50 min
Jul 10, 6:13 PM CDTSpecial Weather StatementPAHAlexander, Pulaski47 min
Jul 10, 6:19 PM CDTSpecial Weather StatementPAHEdwards, Wabash, White41 min
Jul 10, 6:42 PM CDTSpecial Weather StatementPAHGallatin, Saline48 min

Nearby

Severe Thunderstorm Warnings in Illinois, 2021Every severe thunderstorm warning in 2021

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.