Alert archive / Indiana / Special Weather Statements in 2016

Special Weather Statement, NWS Indianapolis, IN

July 8, 2016Lawrence County, Indiana

NWS Indianapolis, IN issued this special weather statement at Jul 8, 2016, 5:40 PM EDT for Lawrence County, Indiana. It was in force for 50 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 8, 2016, 5:40 PM EDT (21:40 UTC)
Expired: Jul 8, 2016, 6:30 PM EDT
In force: 50 min
Issued by: NWS Indianapolis, IN

County Lawrence County, IN

The radar

The Evansville,IN radar (KVWX), 102 km from the middle of the area, began a volume at 21:43 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, 9.7 hours before the alert went out and 218 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: 1584 J/kg
Mixed-layer CIN: -53 J/kg
Mixed-layer LCL: 799 m above ground
0-6 km bulk shear: 32 kt
0-1 km storm-relative helicity: 85 m²/s²
0-3 km storm-relative helicity: 57 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 Indianapolis, IN wrote its last area forecast discussion before this special weather statement went out at Jul 8, 4:40 PM EDT, 1 hour earlier.

Area forecast discussion, Jul 8, 4:40 PM EDT, 1 hour before

Area Forecast Discussion
National Weather Service Indianapolis IN
440 PM EDT FRI JUL 8 2016

.UPDATE...
The Aviation Section has been updated below.

&&

.SYNOPSIS...
Issued at 151 PM EDT Fri Jul 8 2016

A quick moving cold front will sweep across Indiana late this
afternoon and evening...bringing chances for more showers and
storms. However...by late tonight cooler and less humid air...associated
with High pressure over the upper midwest...will push into the
state.

The High is expected to linger across Indiana and the Ohio Valley
through the weekend...providing pleasant temperatures along with
dry weather.

Another Frontal system is expected to arrive near the middle of
the next work week and storm chances will return.

&&

.NEAR TERM /Tonight/...

Issued at 151 PM EDT Fri Jul 8 2016

Surface analysis early this afternoon shows low pressure in place
across the Great Lakes with a trough of low pressure stretching
southwest across eastern illinois. Some TSRA were developing along
a boundary across Lake Michigan. It is along and ahead this
boundary within the trough that we will watch for convective
development late this afternoon and evening. Meanwhile...much of
central Indiana remained in the very warm and humid air mass with
dew point temps in the lower 70s. Some convection was continuing
across the southern parts of central Indiana.

Main forecast challenge tonight will be early precip chcs.
Daytime heating in combination with the approaching trough should
result in additional development late this afternoon. Given the
recent radar trends...rapid refresh seems a bit overdone...but as
far as timing is concerned...it clears the trough east of central
Indiana by 00z. Daytime heating will be on the down swing at that
time...and mid level drying is expected to surge into the area in
the wake of the trough. Thus will try to trend toward a dry
forecast for tonight...but may need to keep some low chc pops for
the far eastern areas from 00z-02z.

Cold air advection take shape tonight with drier air arriving and
dew point temps in the lower 60s. Will trend lows at or below a
blend.

&&

.SHORT TERM /Saturday through Monday/...

Issued at 151 PM EDT Fri Jul 8 2016

Quiet weather is expected through this period as the GFS and NAm
both suggest ridging building aloft over the Great lakes and Ohio
valley. Mid level show dry air and weak subsidence. Forecast
soundings through the period also denote a dry column...with
attainable convective temperatures each day...but with capping in
the mid levels. Thus just some flat topped fair weather CU is
expected each day as surface high pressure from Canada settle
across the region. Partly cloudy days and mostly clear nights will
be the way to go.

850mb temps are expected to fall to near 14-16c through the
period...as mainly northerly flow persists. MAVMOS suggests rather
light winds at night. This along with clear skies should provide
cool cooling conditions. Thus will stick close to a blend on highs
and trend lows at or cooler than a blend.

&&

.LONG TERM /Monday Night through Thursday Night/...

Issued at 208 PM EDT Fri Jul 8 2016

Shower and thunderstorm chances will increase on Monday night as a
warm front approaches from the southwest.  This front is in
association with a low pressure system tracking across Canada.
This system will be responsible for unsettled weather through the
long term period as it tracks eastward. As a result, latest
Superblend initialization continues to trend toward a wet
forecast. Temperatures through the period will be above normal
with highs in the upper 80s to low 90s and overnight lows in the
upper 60s to low 70s. Trended slightly warmer for the second half
of the period due to the southwesterly flow at the surface.

&&

.AVIATION /Discussion for the 08/2100Z TAF Issuance/...

Issued at 440 PM EDT Fri Jul 8 2016

Widely scattered convection continues to move through the southern
portions of central Indiana this afternoon due to a cold frontal
passage. May see a shower or TSRA over KHUF or KBMG in the next
hour. TAF sites are dry at this time, and do not expect much in the
way of further development over them this afternoon, but can't
completely rule it out with the dry air still back in Illinois.  VFR
should prevail through the end of the TAF period as high pressure
strengthens over the region tonight. Winds will be westerly at 5 to
12 kts, increasing to 10 to 14 kts tomorrow morning.

&&

.IND Watches/Warnings/Advisories...NONE.

&&

SYNOPSIS...PUMA
NEAR TERM...PUMA
SHORT TERM...PUMA
LONG TERM....TDUD
AVIATION...TDUD/CP

Hazardous weather outlook, Jul 8, 4:43 PM EDT, 57 minutes before

HAZARDOUS WEATHER OUTLOOK...UPDATED
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
443 PM EDT FRI JUL 8 2016

INZ021-028>031-035>049-051>057-060>065-067>072-091000-
CARROLL-WARREN-TIPPECANOE-CLINTON-HOWARD-FOUNTAIN-MONTGOMERY-BOONE-
TIPTON-HAMILTON-MADISON-DELAWARE-RANDOLPH-VERMILLION-PARKE-PUTNAM-
HENDRICKS-MARION-HANCOCK-HENRY-VIGO-CLAY-OWEN-MORGAN-JOHNSON-SHELBY-
RUSH-SULLIVAN-GREENE-MONROE-BROWN-BARTHOLOMEW-DECATUR-KNOX-DAVIESS-
MARTIN-LAWRENCE-JACKSON-JENNINGS-
INCLUDING THE CITIES OF...LAFAYETTE...FRANKFORT...KOKOMO...
CRAWFORDSVILLE...ANDERSON...MUNCIE...INDIANAPOLIS...TERRE HAUTE...
SHELBYVILLE...BLOOMINGTON...COLUMBUS...VINCENNES...BEDFORD...SEYMOUR
443 PM EDT FRI JUL 8 2016

THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL INDIANA.

.DAY ONE...TONIGHT.

OUTLOOK: THUNDERSTORMS ARE POSSIBLE...AND A FEW COULD BE SEVERE.

HAZARDS: DAMAGING WINDS...HEAVY RAINFALL...LARGE HAIL AND
LIGHTNING....HEAT INDEX VALUES MID TO UPPER 90S.

TIMING: THUNDERSTORMS THROUGH 9 PM. HEAT INDEX VALUES THROUGH 6 PM.

DISCUSSION: A COLD FRONT WILL DROP SOUTHEAST ACROSS CENTRAL
INDIANA LATE THIS AFTERNOON AND EVENING. THE FRONT WILL INTERACT
WITH WARM...HUMID AND UNSTABLE AIR TO TIGGER ISOLATED TO SCATTERED
THUNDERSTORMS. A FEW OF THE STORMS COULD BE SEVERE. HEAT INDEX
VALUES WILL BE IN THE MID AND UPPER 90S AHEAD OF THE FRONT.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY.

OUTLOOK: THUNDERSTORMS ARE POSSIBLE THROUGH MUCH OF NEXT WEEK
OVER ALL OR PARTS OF CENTRAL INDIANA. SEVERE WEATHER IS NOT
ANTICIPATED AT THIS TIME...BUT HEAVY RAINFALL AND LIGHTNING ARE
THREATS FROM ANY THUNDERSTORM.

DISCUSSION: A FRONTAL SYSTEM WILL BRING A RETURN OF THUNDERSTORM
CHANCES NEXT WEEK.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED THIS AFTERNOON AND EARLY EVENING.

&&

MORE INFORMATION...ALONG WITH OTHER WEATHER...HYDROLOGICAL AND
CLIMATE INFORMATION CAN BE FOUND...AT HTTP://WEATHER.GOV/IND (ALL
LOWERCASE)

In the hours before

Special weather statement, Jul 8, 12:42 PM EDT, 4 hours 58 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
1242 PM EDT FRI JUL 8 2016

INZ061-069-070-081730-
LAWRENCE IN-MARTIN IN-GREENE IN-
1242 PM EDT FRI JUL 8 2016

...SPECIAL WEATHER STATEMENT...

AT 1241 PM EDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM 12
MILES NORTH OF SHOALS...OR 18 MILES WEST OF BEDFORD...MOVING EAST AT
25 MPH.

WINDS IN EXCESS OF 30 MPH WILL BE POSSIBLE WITH THIS STORM.

LOCATIONS IMPACTED INCLUDE...
BEDFORD...MITCHELL...OOLITIC...CRANE...BARTLETTSVILLE...WILLIAMS...
HELTONVILLE...BURNS CITY...TUNNELTON...AVOCA...INDIAN SPRINGS...
OWENSBURG AND SILVERVILLE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THIS STORM...AND MAY LEAD
TO LOCALIZED FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.

FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM.
LIGHTNING CAN STRIKE 10 MILES AWAY FROM A THUNDERSTORM. SEEK A SAFE
SHELTER INSIDE A BUILDING OR VEHICLE.

WHEN THUNDER ROARS...GO INDOORS!

&&

LAT...LON 3881 8692 3882 8690 3890 8690 3890 8695
      3891 8695 3899 8648 3899 8638 3874 8634
      3874 8692
TIME...MOT...LOC 1641Z 263DEG 22KT 3884 8684

PUMA

Special weather statement, Jul 8, 5:40 PM EDT, 0 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
540 PM EDT FRI JUL 8 2016

INZ061-068>070-082230-
DAVIESS IN-LAWRENCE IN-MARTIN IN-GREENE IN-
540 PM EDT FRI JUL 8 2016

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN GREENE...NORTHERN
MARTIN...NORTHEASTERN DAVIESS AND WESTERN LAWRENCE COUNTIES UNTIL 630
PM EDT...

AT 539 PM EDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM 13
MILES NORTHWEST OF SHOALS...OR 22 MILES WEST OF BEDFORD...MOVING EAST
AT 35 MPH.

HALF INCH HAIL AND WINDS IN EXCESS OF 40 MPH WILL BE POSSIBLE WITH
THIS STORM.

LOCATIONS IMPACTED INCLUDE...
BEDFORD...MITCHELL...ODON...OOLITIC...CRANE...HURON...WILLIAMS...
BURNS CITY...AVOCA...INDIAN SPRINGS...OWENSBURG AND SILVERVILLE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS STORM MAY INTENSIFY...SO BE CERTAIN TO MONITOR LOCAL RADIO
STATIONS AND AVAILABLE TELEVISION STATIONS FOR ADDITIONAL INFORMATION
AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE.

TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT
AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
OFFICE IN INDIANAPOLIS.

&&

LAT...LON 3875 8702 3893 8700 3894 8646 3869 8649
      3869 8659
TIME...MOT...LOC 2139Z 274DEG 30KT 3884 8691

KOCH

The office that day

Everything else NWS Indianapolis, IN issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 8, 10:33 AM EDT	Special Weather Statement	IND	Brown, Monroe	42 min
Jul 8, 11:40 AM EDT	Severe Thunderstorm Warning	IND	Bartholomew, Decatur, Jennings	35 min
Jul 8, 12:42 PM EDT	Special Weather Statement	IND	Lawrence	48 min
Jul 8, 5:53 PM EDT	Severe Thunderstorm Warning	IND	Lawrence, Martin	35 min

Nearby

Special Weather Statements in Indiana, 2016 Every 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.