Alert archive / Indiana / Special Weather Statements in 2016

Special Weather Statement, NWS Northern Indiana

August 24, 2016Pulaski County, Indiana

NWS Northern Indiana issued this special weather statement at Aug 24, 2016, 4:41 PM EDT for Pulaski County, Indiana. It was in force for 34 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
Aug 24, 2016, 4:41 PM EDT (20:41 UTC)
Expired
Aug 24, 2016, 5:15 PM EDT
In force
34 min
Issued by
NWS Northern Indiana

County Pulaski County, IN

The radar

The Northern Indiana radar (KIWX), 93 km from the middle of the area, began a volume at 20:40 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, 8.7 hours before the alert went out and 186 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 2016-08-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 550 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 2016-08-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 255 square meters per square second.19395878Sfc1 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
550 J/kg
Mixed-layer CIN
-64 J/kg
Mixed-layer LCL
741 m above ground
0-6 km bulk shear
34 kt
0-1 km storm-relative helicity
255 m²/s²
0-3 km storm-relative helicity
267 m²/s²
Significant tornado parameter
0.4
Supercell composite
3.0

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 Aug 24, 3:59 PM EDT, 42 minutes earlier.

Area forecast discussion, Aug 24, 3:59 PM EDT, 42 minutes before
Area Forecast Discussion
National Weather Service Northern Indiana
359 PM EDT WED AUG 24 2016

.SYNOPSIS...
Issued at 350 PM EDT Wed Aug 24 2016

Showers and thunderstorms are possible through Thursday ahead of
a slow moving cold front as weak upper level systems move across
the area. Tornadoes are possible over the southern portion of the
area into early this evening, south of a line from Huntington to
Decatur. In addition to these storms, there is also the chance for
severe storms over part of the area Thursday. Locally heavy rain
will also be a concern. Highs will be in the low to mid 80s each
dasy.

&&

.SHORT TERM...(This Evening through Thursday)
Issued at 351 PM EDT Wed Aug 24 2016

Factors have become favorable for tornado development over the
southern portion of the area; south of the area of the ongoing
showers and isolated storms. This includes the area south of a
line from Grissom to Plum Tree to Monroe. An upper level
disturbance along with a low level jet has aided in low level
shear with Helicity values of 350 with shear of 30 m/s. Daytime
destabilization of the airmass with LCL heights below 750 meters
have allowed storms to produce tornadoes in the Kokomo area. The
Storm Prediction Center has included part of our forecast area in
a tornado watch until 8 PM this evening. Otherwise, the tornado
threat should end by late evening, More storms are possible
tonight, with another good chance for storms Thursday afternoon
with daytime heating. Localized flooding is possible with any
training storms, especially over areas that received extremely
heavy rainfall last week.

&&

.LONG TERM...(Thursday Night through Wednesday)
Issued at 351 PM EDT Wed Aug 24 2016

There should be a break from the storms from Friday through Saturday
before the moist air returns to the area early next week. Storms are
possible again starting Saturday night through the middle of next
week. High temperatures should be in the low to mid 80s each day.

 &&

.AVIATION...(For the 18Z TAFS through 18Z Thursday Afternoon)
Issued at 135 PM EDT Wed Aug 24 2016

Shortwave currently moving across the area and supporting some
decaying showers and storms along leading theta-e ridge. Increased
low level moisture supporting some low MVFR ceilings along and
immediately behind line of showers with some brief IFR not out of
the question at KSBN. Weak instability is keeping thunder very
isolated so far but a secondary area of convection is forming
across northern Illinois and could bring a few SCT storms to the
terminals this afternoon. Confidence in thunder is not high so
kept just VCTS for now. Timing also a bit uncertain, though best
chances should be during late afternoon and early evening. Expect
low clouds to scatter late this evening but another round of MVFR
possible toward daybreak, especially at KSBN.

&&

.IWX Watches/Warnings/Advisories...
IN...NONE.
MI...NONE.
OH...NONE.
LM...NONE.
&&

SYNOPSIS...Skipper
SHORT TERM...Skipper
LONG TERM...Skipper
AVIATION...AGD

Visit us at www.weather.gov/iwx

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Hazardous weather outlook, Aug 24, 5:48 AM EDT, 10 hours 53 minutes before
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In the hours before

Special weather statement, Aug 24, 3:09 PM EDT, 1 hour 32 minutes before
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Special weather statement, Aug 24, 4:41 PM EDT, 0 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Aug 24, 3:09 PM EDTSpecial Weather StatementIWXMiami36 min
Aug 24, 3:34 PM EDTTornado Warning Tornado observedConsiderable damage threatIWXGrant, Miami26 min
Aug 24, 3:59 PM EDTTornado WarningIWXGrant31 min
Aug 24, 4:30 PM EDTTornado WarningIWXBlackford, Grant, Wells30 min
Aug 24, 4:59 PM EDTTornado WarningIWXBlackford, Wells31 min
Aug 24, 5:14 PM EDTTornado WarningIWXAllen31 min
Aug 24, 5:25 PM EDTTornado Warning Tornado observedIWXAdams, Wells35 min
Aug 24, 5:39 PM EDTTornado Warning Tornado observedConsiderable damage threatIWXAllen36 min
Aug 24, 5:46 PM EDTTornado WarningIWXCass29 min
Aug 24, 5:54 PM EDTTornado Warning Tornado observedIWXAdams36 min
Aug 24, 6:07 PM EDTTornado WarningIWXMiami, Wabash23 min
Aug 24, 6:11 PM EDTTornado WarningIWXMiami34 min
Aug 24, 6:31 PM EDTTornado WarningIWXWabash29 min
Aug 24, 6:32 PM EDTTornado WarningIWXKosciusko, Wabash, Whitley28 min
Aug 24, 6:41 PM EDTTornado WarningIWXGrant, Miami34 min
Aug 24, 6:53 PM EDTSevere Thunderstorm WarningIWXAllen, Huntington, Whitley37 min
Aug 24, 7:05 PM EDTTornado WarningIWXHuntington25 min
Aug 24, 7:25 PM EDTTornado WarningIWXAllen, Wells35 min
Aug 24, 7:32 PM EDTSpecial Weather StatementIWXAllen28 min
Aug 24, 7:50 PM EDTTornado WarningIWXGrant25 min
Aug 24, 7:55 PM EDTAreal Flood AdvisoryIWXAllen, Whitley3 hr
Aug 24, 5:59 PM EDTTornado Warning Tornado observedConsiderable damage threatIWXDefiance, Henry, Paulding31 min
Aug 24, 6:24 PM EDTTornado Warning Tornado observedConsiderable damage threatIWXVan Wert36 min
Aug 24, 6:29 PM EDTTornado Warning Tornado observedConsiderable damage threatIWXDefiance, Henry46 min
Aug 24, 6:54 PM EDTTornado Warning EmergencyTornado observedCatastrophic damage threatIWXFulton, Henry36 min
Aug 24, 6:57 PM EDTTornado Warning Tornado observedConsiderable damage threatIWXPaulding, Putnam, Van Wert33 min
Aug 24, 7:28 PM EDTTornado Warning Tornado observedIWXDefiance, Henry, Putnam32 min
Aug 24, 7:56 PM EDTTornado WarningIWXHenry, Putnam49 min

Nearby

Special Weather Statements in Indiana, 2016Every special weather statement in 2016

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.