Alert archive / Indiana / Special Weather Statements in 2017

Special Weather Statement, NWS Northern Indiana

July 20, 2017Kosciusko County, Indiana

NWS Northern Indiana issued this special weather statement at Jul 20, 2017, 11:19 AM EDT for Kosciusko County, 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
Jul 20, 2017, 11:19 AM EDT (15:19 UTC)
Expired
Jul 20, 2017, 11:45 AM EDT
In force
26 min
Issued by
NWS Northern Indiana

County Kosciusko County, IN

The radar

The Northern Indiana radar (KIWX), 25 km from the middle of the area, began a volume at 15:23 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 12:00Z, 3.3 hours before the alert went out and 256 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, Lincoln, IL at 12:00Z on 2017-07-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 488 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Lincoln, IL at 12:00Z on 2017-07-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 71 square meters per square second.193958Sfc1 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
488 J/kg
Mixed-layer CIN
-211 J/kg
Mixed-layer LCL
1572 m above ground
0-6 km bulk shear
36 kt
0-1 km storm-relative helicity
71 m²/s²
0-3 km storm-relative helicity
146 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.0

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 Jul 20, 10:47 AM EDT, 32 minutes earlier.

Area forecast discussion, Jul 20, 10:47 AM EDT, 32 minutes before
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Hazardous weather outlook, Jul 20, 4:45 AM EDT, 6 hours 34 minutes before
Hazardous Weather Outlook
National Weather Service Northern Indiana
445 AM EDT Thu Jul 20 2017

INZ003>009-012>018-020-022>027-032>034-MIZ077>081-OHZ001-002-004-005-
015-016-024-025-210845-
La Porte-St. Joseph IN-Elkhart-Lagrange-Steuben-Noble-De Kalb-Starke-
Pulaski-Marshall-Fulton IN-Kosciusko-Whitley-Allen IN-White-Cass IN-
Miami-Wabash-Huntington-Wells-Adams-Grant-Blackford-Jay-Berrien-
Cass MI-St. Joseph MI-Branch-Hillsdale-Williams-Fulton OH-Defiance-
Henry-Paulding-Putnam-Van Wert-Allen OH-
445 AM EDT Thu Jul 20 2017 /345 AM CDT Thu Jul 20 2017/

This hazardous weather outlook is for portions of southwest
Michigan...northern Indiana and northwest Ohio.

.DAY ONE...Today and Tonight

There is a good chance of thunderstorms this morning, especially over
northwest Indiana and southwest lower Michigan. Widespread severe
weather is not expected but a few of the storms may be strong.
Locally heavy rain is also possible.

It will be very warm and humid today. Heat indices could briefly
reach 100 to 105 this afternoon but will be dependent on how fast
clouds dissipate.

Thunderstorms may develop again late this afternoon and evening with
the potential of an isolated strong to severe thunderstorm and heavy
rainfall. Localized flooding will be a possibility with any
thunderstorm.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday

Multiple rounds of thunderstorms are possible Friday through Sunday.
Strong thunderstorms and isolated severe weather along with heavy
rainfall remain possible during this period with the best chances
focused on Friday night and Saturday morning. Flooding will be
possible during this period as well.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed at times through Saturday.

&&

Stay tuned to NOAA Weather Radio for further details or updates...or
check our web site at weather.gov/iwx

LMZ043-046-210845-
New Buffalo MI to St Joseph MI-Michigan City IN to New Buffalo MI-
445 AM EDT Thu Jul 20 2017

This hazardous weather outlook is for portions of The Nearshore
Waters of Southeastern Lake Michigan.

.DAY ONE...Today and Tonight

There is a chance for thunderstorms today and tonight. Conditions
hazardous to small craft are likely in and near any thunderstorms.
Mariners should pay close attention to changing weather conditions.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday

Multiple rounds of thunderstorms are possible Friday through Sunday.
Widespread severe weather is not expected at this time but the best
chance for stronger storms with gusty wind potential is Friday night
into Saturday.

&&

Stay tuned to NOAA Weather Radio for further details or updates...or
check our web site at weather.gov/iwx

In the hours before

Special weather statement, Jul 20, 10:22 AM EDT, 57 minutes before
Special Weather Statement
National Weather Service Northern Indiana
1022 AM EDT THU JUL 20 2017

INZ012>015-201445-
Marshall-Fulton-Pulaski-Starke-
1022 AM EDT THU JUL 20 2017

...A STRONG THUNDERSTORM WILL AFFECT NORTHWESTERN FULTON...NORTHERN
PULASKI...STARKE AND WESTERN MARSHALL COUNTIES...

At 1021 AM EDT/921 AM CDT/, a strong thunderstorm was located near
North Judson, or near Knox, moving east at 40 mph.

Winds in excess of 40 mph are possible with this storm. Torrential
rainfall is also occurring with this storm, and may cause localized
flooding. Do not drive your vehicle through flooded roadways.

Locations impacted include...
Plymouth, Rochester, Knox, Winamac, North Judson, Argos, Culver,
Hamlet, Koontz Lake, Walnut, Oak Grove, Ripley, Monterey, Leiters
Ford, Beardstown, Ober, Denham, Brems, Tyner and Hibbard.

LAT...LON 4139 8671 4144 8619 4105 8618 4105 8687
TIME...MOT...LOC 1421Z 264DEG 44KT 4122 8669

MCS
Special weather statement, Jul 20, 10:34 AM EDT, 45 minutes before
Special Weather Statement
National Weather Service Northern Indiana
1034 AM EDT THU JUL 20 2017

INZ013-015-020-022-201500-
Cass-White-Fulton-Pulaski-
1034 AM EDT THU JUL 20 2017

...A STRONG THUNDERSTORM WILL AFFECT NORTHEASTERN WHITE...
SOUTHWESTERN FULTON...SOUTHEASTERN PULASKI AND CASS COUNTIES...

At 1034 AM EDT/934 AM CDT/, a strong thunderstorm was located near
Monticello, moving east at 40 mph.

Winds in excess of 30 mph, scattered lightning strikes, and heavy
downpours are possible with this storm.

Locations impacted include...
Logansport, Rochester, Winamac, Walton, Royal Center, Lincoln,
Pulaski, Galveston, Kewanna, Burnettsville, Fulton, Onward, Clymers,
Nyena Lake, Leases Corner, Hoover, Idaville, Star City, Thornhope and
Lucerne.

LAT...LON 4056 8637 4069 8637 4069 8652 4074 8653
      4074 8673 4105 8673 4105 8618 4056 8617
TIME...MOT...LOC 1434Z 272DEG 41KT 4081 8667

MCS
Special weather statement, Jul 20, 10:52 AM EDT, 27 minutes before
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Special weather statement, Jul 20, 10:55 AM EDT, 24 minutes before
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Special weather statement, Jul 20, 11:19 AM EDT, 0 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Jul 19, 10:04 PM EDTSpecial Marine WarningIWX116 min
Jul 19, 11:47 PM EDTSpecial Weather StatementIWXLaPorte, Pulaski, Starke, White58 min
Jul 19, 11:54 PM EDTSpecial Marine WarningIWX96 min
Jul 20, 12:02 AM EDTSevere Thunderstorm WarningIWXFulton, Marshall, Pulaski, Starke43 min
Jul 20, 12:45 AM EDTSpecial Weather StatementIWXCass, Fulton, Kosciusko, Marshall, Miami60 min
Jul 20, 1:46 AM EDTSpecial Weather StatementIWXAdams, Allen, Blackford, DeKalb, Grant, Huntington and 5 more44 min
Jul 20, 10:22 AM EDTSpecial Weather StatementIWXFulton, Marshall, Starke23 min
Jul 20, 10:34 AM EDTSpecial Weather StatementIWXCass, Pulaski26 min
Jul 20, 10:52 AM EDTSpecial Weather StatementIWXFulton23 min
Jul 20, 10:55 AM EDTSpecial Weather StatementIWXCass35 min

Nearby

Special Weather Statements in Indiana, 2017Every 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.