Alert archive / Indiana / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 2, NWS Northern Indiana

February 24, 2017Marshall County, Saint Joseph County, Indiana

NWS Northern Indiana issued this severe thunderstorm warning at Feb 24, 2017, 4:20 PM EST for Marshall County, Saint Joseph County, Indiana. It was in force for 40 min. 3 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Feb 24, 2017, 4:20 PM EST (21:20 UTC)
Expired: Feb 24, 2017, 5:00 PM EST
In force: 40 min
Issued by: NWS Northern Indiana
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Marshall County, IN, Saint Joseph County, IN

The radar

The Northern Indiana radar (KIWX), 50 km from the middle of the area, began a volume at 21:21 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.

What was reported inside it

Time	Report	Where	Remark
Feb 24, 4:25 PM EST	TSTM WND DMG	Plymouth, IN	(CORRECTED) TRAMPOLINES, SWING SETS AND A FEW TREES BLOWN OVER.
Feb 24, 4:25 PM EST	TSTM WND DMG	Plymouth, IN	TRAMPOLINES, SWING SETS AND A FEW TREES BLOWN OVER.
Feb 24, 4:49 PM EST	TSTM WND DMG	Plymouth, IN	TRAMPOLINES, SWING SETS AND A FEW TREES BLOWN OVER.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

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

Issued	Product	Office	Lasted
Feb 24, 3:44 PM EST	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 9.3 hours before the alert went out and 236 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: 109 J/kg
Mixed-layer CIN: -391 J/kg
Mixed-layer LCL: 1088 m above ground
0-6 km bulk shear: 60 kt
0-1 km storm-relative helicity: 242 m²/s²
0-3 km storm-relative helicity: 316 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

936 
WUUS53 KIWX 242120
SVRIWX
INC099-141-242200-
/O.NEW.KIWX.SV.W.0002.170224T2120Z-170224T2200Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Northern Indiana
420 PM EST FRI FEB 24 2017

The National Weather Service in Northern Indiana  has issued a

* Severe Thunderstorm Warning for...
  Southeastern St. Joseph County in north central Indiana...
  Marshall County in north central Indiana...

* Until 500 PM EST

* At 419 PM EST, a severe thunderstorm was located near Culver, or 7
  miles southwest of Plymouth, moving northeast at 35 mph.

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

  SOURCE...Radar indicated. 

  IMPACT...Hail damage to vehicles is expected. Expect wind damage 
           to roofs, siding, and trees. 

* This severe thunderstorm will be near,
  Plymouth and Argos around 430 PM EST. 
  Bourbon around 445 PM EST. 
  Bremen around 450 PM EST. 

Other locations impacted by this severe thunderstorm include Hibbard,
Twin Lakes, Inwood, Rutland, Linkville, Burr Oak, Lake Of The Woods,
Maxinkuckee, Wyatt and La Paz.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4142 8636 4163 8606 4127 8606 4117 8647
      4125 8647
TIME...MOT...LOC 2119Z 236DEG 30KT 4126 8639 

HAIL...1.00IN
WIND...60MPH
 
$$

JBALL

1 follow-up statement

618 
WWUS53 KIWX 242204
SVSIWX

Severe Weather Statement
National Weather Service Northern Indiana
504 PM EST FRI FEB 24 2017

INC099-141-242212-
/O.EXP.KIWX.SV.W.0002.000000T0000Z-170224T2200Z/
St. Joseph IN-Marshall IN-
504 PM EST FRI FEB 24 2017

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN ST. JOSEPH AND
MARSHALL COUNTIES HAS EXPIRED...
        
The storm which prompted the warning has moved out of the area.
Therefore the warning has been allowed to expire.

A severe thunderstorm watch remains in effect until 1000 PM EST for
north central and northwestern Indiana.

LAT...LON 4142 8636 4163 8606 4127 8606 4117 8647
      4125 8647
TIME...MOT...LOC 2202Z 236DEG 30KT 4145 8601 

$$

FISHER

The office that day

Everything else NWS Northern Indiana issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Feb 24, 8:08 AM EST	Special Weather Statement	IWX	Saint Joseph	37 min
Feb 24, 3:42 PM EST	Small Craft Advisory	IWX		42 hr
Feb 24, 3:56 PM EST	Special Weather Statement	IWX	Jay	34 min
Feb 24, 4:41 PM EST	Severe Thunderstorm Warning	IWX	Elkhart, Marshall, Saint Joseph	24 min
Feb 24, 6:08 PM EST	Special Weather Statement	IWX	Kosciusko	37 min
Feb 24, 6:32 PM EST	Special Weather Statement	IWX	LaGrange	28 min

Nearby

Severe Thunderstorm Warnings in Indiana, 2017 Every severe thunderstorm warning in 2017

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.