Alert archive / Indiana / Special Weather Statements in 2017

Special Weather Statement, NWS Northern Indiana

May 1, 20175 counties in Indiana

NWS Northern Indiana issued this special weather statement at May 1, 2017, 3:04 AM EDT for 5 counties in Indiana. 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 outline as issued.

The facts

Issued: May 1, 2017, 3:04 AM EDT (07:04 UTC)
Expired: May 1, 2017, 3:30 AM EDT
In force: 26 min
Issued by: NWS Northern Indiana

Counties Cass County, IN, Fulton County, IN, LaPorte County, IN, Pulaski County, IN, Starke County, IN

The radar

The Northern Indiana radar (KIWX), 90 km from the middle of the area, began a volume at 07:08 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

Lincoln, IL (KILX), launched 00:00Z, 7.1 hours before the alert went out and 189 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: 267 J/kg
Mixed-layer CIN: -51 J/kg
Mixed-layer LCL: 696 m above ground
0-6 km bulk shear: 66 kt
0-1 km storm-relative helicity: 459 m²/s²
0-3 km storm-relative helicity: 418 m²/s²
Significant tornado parameter: 0.6
Supercell composite: 5.7

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

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

NWS Northern Indiana wrote its last area forecast discussion before this special weather statement went out at May 1, 1:30 AM EDT, 1 hour 34 minutes earlier.

Area forecast discussion, May 1, 1:30 AM EDT, 1 hour 34 minutes before

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Hazardous weather outlook, Apr 30, 4:59 PM EDT, 10 hours 5 minutes before

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In the hours before

Special weather statement, May 1, 3:04 AM EDT, 0 minutes before

Special Weather Statement
National Weather Service Northern Indiana
304 AM EDT MON MAY 1 2017

INZ003-004-012>015-020-022-023-010730-
Miami-La Porte-St. Joseph-Cass-White-Marshall-Fulton-Pulaski-Starke-
304 AM EDT MON MAY 1 2017

...A LINE OF SHOWERS WILL AFFECT NORTHEASTERN WHITE...WESTERN ST.
JOSEPH...WESTERN FULTON...PULASKI...CASS...STARKE...SOUTHWESTERN
MIAMI...WESTERN MARSHALL AND LA PORTE COUNTIES...

At 303 AM EDT/203 AM CDT/, radar indicated showers were located along
a line extending from near Medaryville to 6 miles west of Frankfort.
Movement was northeast at 65 mph.

Wind gusts up to 50 mph are possible with these showers.

Locations impacted include...
La Porte, Logansport, Plymouth, Monticello, Knox, Winamac, Grissom
Afb, Walkerton, North Liberty, New Carlisle, North Judson, Kingsford
Heights, Culver, Walton, Wanatah, Royal Center, Hamlet, Medaryville,
La Crosse and Koontz Lake.

This includes INTERSTATE 80 IN INDIANA between MILE MARKERs 60 and
65.

LAT...LON 4144 8693 4176 8652 4176 8646 4056 8609
      4056 8637 4069 8637 4069 8652 4074 8653
      4074 8675 4068 8676 4068 8674 4066 8676
      4067 8676 4120 8693
TIME...MOT...LOC 0703Z 207DEG 58KT 4108 8684 4029 8662

NWS

The office that day

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

Issued	Product	Office	Counties	Lasted
May 1, 3:35 AM EDT	Special Weather Statement	IWX	Cass, Kosciusko, Miami, Wabash	40 min
May 1, 4:18 AM EDT	Special Weather Statement	IWX	Kosciusko, Wabash	27 min
May 1, 6:23 AM EDT	Special Weather Statement	IWX	Elkhart	37 min
May 1, 7:51 AM EDT	River Flood Warning	IWX	Blackford, Huntington, Jay, Wabash, Wells	52 hr
May 1, 6:50 AM EDT	Special Weather Statement	IWX	Saint Joseph	25 min

Nearby

Special Weather Statements in Indiana, 2017 Every special weather statement 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.