Alert archive / Indiana / Tornado Warnings in 2021

Tornado Warning 17, NWS Paducah, KY

October 15, 2021Spencer County, Indiana

NWS Paducah, KY issued this tornado warning at Oct 15, 2021, 8:16 PM CDT for Spencer County, Indiana. It was in force for 18 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
Oct 15, 2021, 8:16 PM CDT (01:16 UTC)
Expired
Oct 15, 2021, 8:34 PM CDT
In force
18 min
Issued by
NWS Paducah, KY
Area
Storm-based polygon
Tornado
Radar indicated
Hail
0.75 in

County Spencer County, IN

The radar

The Louisville radar (KLVX), 78 km from the middle of the area, began a volume at 01:17 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

Nashville Metro, TN (KBNA), launched 00:00Z, 1.3 hours before the alert went out and 220 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 00:00Z on 2021-10-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 519 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 00:00Z on 2021-10-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 65 square meters per square second.1939587897117Sfc1 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
519 J/kg
Mixed-layer CIN
-5 J/kg
Mixed-layer LCL
903 m above ground
0-6 km bulk shear
58 kt
0-1 km storm-relative helicity
65 m²/s²
0-3 km storm-relative helicity
107 m²/s²
Significant tornado parameter
0.2
Supercell composite
1.6

Open this sounding in Storm Lab

The text

As transmitted.

840 
WFUS53 KPAH 160116
TORPAH
INC147-160145-
/O.NEW.KPAH.TO.W.0017.211016T0116Z-211016T0145Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Paducah KY
816 PM CDT Fri Oct 15 2021

The National Weather Service in Paducah has issued a

* Tornado Warning for...
  Northeastern Spencer County in southwestern Indiana...

* Until 845 PM CDT.
    
* At 816 PM CDT, a severe thunderstorm capable of producing a tornado
  was located near Santa Claus, or 14 miles north of Rockport, moving
  east at 35 mph.

  HAZARD...Tornado.

  SOURCE...Radar indicated rotation.

  IMPACT...Flying debris will be dangerous to those caught without 
           shelter. Mobile homes will be damaged or destroyed. 
           Damage to roofs, windows, and vehicles will occur.  Tree 
           damage is likely.

* This dangerous storm will be near...
  Santa Claus around 820 PM CDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

&&

LAT...LON 3805 8678 3804 8702 3811 8702 3817 8680
      3816 8679 3814 8680 3812 8679 3812 8681
      3811 8679 3810 8679 3810 8677 3808 8678
      3806 8677
TIME...MOT...LOC 0116Z 258DEG 30KT 3809 8698 

TORNADO...RADAR INDICATED
MAX HAIL SIZE...<.75 IN

$$

ATL
2 follow-up statements
588 
WWUS53 KPAH 160129
SVSPAH

Severe Weather Statement
National Weather Service Paducah KY
829 PM CDT Fri Oct 15 2021

INC147-160145-
/O.CON.KPAH.TO.W.0017.000000T0000Z-211016T0145Z/
Spencer IN-
829 PM CDT Fri Oct 15 2021

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 845 PM CDT FOR
NORTHEASTERN SPENCER COUNTY...
    
At 829 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Santa Claus, or 19 miles northeast of Rockport,
moving east at 35 mph.

HAZARD...Tornado.

SOURCE...Radar indicated rotation.

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely.

This tornadic thunderstorm will remain over mainly rural areas of
northeastern Spencer County.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

&&

LAT...LON 3807 8691 3813 8692 3817 8680 3816 8679
      3814 8680 3812 8679 3812 8681 3811 8679
      3810 8679 3810 8677 3808 8678 3806 8677
TIME...MOT...LOC 0129Z 258DEG 30KT 3811 8684 

TORNADO...RADAR INDICATED
MAX HAIL SIZE...<.75 IN

$$

ATL
705 
WWUS53 KPAH 160134
SVSPAH

Severe Weather Statement
National Weather Service Paducah KY
834 PM CDT Fri Oct 15 2021

INC147-160144-
/O.CAN.KPAH.TO.W.0017.000000T0000Z-211016T0145Z/
Spencer IN-
834 PM CDT Fri Oct 15 2021

...THE TORNADO WARNING FOR NORTHEASTERN SPENCER COUNTY IS
CANCELLED...
                
The storm which prompted the warning has weakened below severe
limits, and no longer appears capable of producing a tornado.
Therefore, the warning has been cancelled.

LAT...LON 3807 8691 3813 8692 3817 8680 3816 8679
      3814 8680 3812 8679 3812 8681 3811 8679
      3810 8679 3810 8677 3808 8678 3806 8677
TIME...MOT...LOC 0130Z 258DEG 30KT 3812 8679 

$$

ATL

The office that day

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

IssuedProductOfficeCountiesLasted
Oct 15, 7:15 PM CDTSpecial Weather StatementPAHVanderburgh30 min
Oct 15, 7:22 PM CDTSevere Thunderstorm WarningPAHVanderburgh23 min
Oct 15, 7:35 PM CDTSevere Thunderstorm WarningPAHWarrick25 min
Oct 15, 7:50 PM CDTSpecial Weather StatementPAHWarrick25 min
Oct 15, 8:12 PM CDTSpecial Weather StatementPAHSpencer33 min

Nearby

Tornado Warnings in Indiana, 2021Every tornado warning in 2021Tornadoes 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.