Alert archive / Indiana / Special Weather Statements in 2017

Special Weather Statement, NWS Northern Indiana

July 21, 2017Pulaski County, Indiana

NWS Northern Indiana issued this special weather statement at Jul 21, 2017, 9:43 PM EDT for Pulaski County, Indiana. It was in force for 47 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 21, 2017, 9:43 PM EDT (01:43 UTC)
Expired
Jul 21, 2017, 10:30 PM EDT
In force
47 min
Issued by
NWS Northern Indiana

County Pulaski County, IN

The radar

The Northern Indiana radar (KIWX), 97 km from the middle of the area, began a volume at 01:45 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, 1.7 hours before the alert went out and 184 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 00:00Z on 2017-07-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2094 joules per kilogram.LCLEL10008507005003002001001 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 00:00Z on 2017-07-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 57 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
2094 J/kg
Mixed-layer CIN
-2 J/kg
Mixed-layer LCL
1572 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
57 m²/s²
0-3 km storm-relative helicity
136 m²/s²
Significant tornado parameter
0.2
Supercell composite
6.5

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 21, 9:08 PM EDT, 35 minutes earlier.

Area forecast discussion, Jul 21, 9:08 PM EDT, 35 minutes before
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<body>
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    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
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      <p id="message2">
        Please try again in a few minutes.
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Hazardous weather outlook, Jul 21, 3:23 PM EDT, 6 hours 20 minutes before
Hazardous Weather Outlook...UPDATED
National Weather Service Northern Indiana
323 PM EDT Fri Jul 21 2017

INZ003>009-012>018-020-022>027-032>034-MIZ077>081-OHZ001-002-004-005-
015-016-024-025-221930-
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-
323 PM EDT Fri Jul 21 2017 /223 PM CDT Fri Jul 21 2017/

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

.DAY ONE...This afternoon and Tonight

Thunderstorms are expected to move through the area late this evening
into early Saturday morning, with the potential to produce flash
flooding and severe weather. Damaging winds will be the primary
threat, with the best chance for severe thunderstorms west of
Interstate 69 in Indiana. An isolated tornado will also be possible.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday

Thunderstorms are also possible into Saturday and Saturday night
with a slight risk for severe storms. Damaging winds along with
heavy rainfall would pose the main threat.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed tonight.

&&

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

LMZ043-046-221930-
New Buffalo MI to St Joseph MI-Michigan City IN to New Buffalo MI-
323 PM EDT Fri Jul 21 2017

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

.DAY ONE...This afternoon and Tonight

Thunderstorms are expected late this evening into Saturday morning
with locally higher winds and waves. Wind gusts to 50 knots will be
possible with the strongest storms.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday

The chance for thunderstorms will exist into Saturday afternoon.
Locally gusty winds and higher waves will be possible.

&&

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 21, 9:43 PM EDT, 0 minutes before
Special Weather Statement
National Weather Service Northern Indiana
843 PM CDT FRI JUL 21 2017

INZ012-013-220230-
Pulaski-Starke-
843 PM CDT FRI JUL 21 2017

...A STRONG THUNDERSTORM WILL AFFECT NORTHERN PULASKI AND SOUTH
CENTRAL STARKE COUNTIES...

At 843 PM CDT, a strong thunderstorm was located over Francesville,
or near Moody, moving northeast at 25 mph.

Winds in excess of 40 mph are possible with this storm.

This storm will be near...
  Winamac around 920 PM CDT.

Other locations impacted by this storm include Vanmeter Park, Denham,
Beardstown and Ripley.

A severe thunderstorm watch remains in effect until midnight CDT for
northwestern Indiana.

LAT...LON 4098 8693 4111 8693 4124 8664 4106 8655
TIME...MOT...LOC 0143Z 239DEG 22KT 4102 8691

JBALL

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 21, 9:42 PM EDTRiver Flood WatchIWXCass, Miami, Wabash, Whitley61 hr
Jul 21, 10:11 PM EDTSpecial Weather StatementIWXStarke49 min
Jul 22, 12:32 AM EDTSpecial Weather StatementIWXKosciusko43 min
Jul 22, 1:21 AM EDTAreal Flood WarningIWXLaPorte, Pulaski, Starke12 hr
Jul 22, 1:54 AM EDTSevere Thunderstorm WarningIWXWhite51 min
Jul 22, 3:41 AM EDTSpecial Weather StatementIWXHuntington, Wells34 min
Jul 22, 4:02 AM EDTSpecial Weather StatementIWXAdams28 min
Jul 22, 4:35 AM EDTAreal Flood WarningIWXCass, Grant, Miami, Wabash6 hr
Jul 22, 4:35 AM EDTSpecial Weather StatementIWXJay25 min
Jul 22, 10:44 AM EDTRiver Flood WarningIWXCass, Kosciusko, Miami, Wabash, Whitley48 hr
Jul 21, 9:42 PM EDTRiver Flood WatchIWXDefiance, Fulton, Williams24 hr
Jul 22, 4:57 AM EDTAreal Flood WarningIWXAllen, Putnam, Van Wert6 hr

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.