Alert archive / Indiana / Special Weather Statements in 2012

Special Weather Statement, NWS Indianapolis, IN

July 18, 2012Brown County, Indiana

NWS Indianapolis, IN issued this special weather statement at Jul 18, 2012, 3:32 PM EDT for Brown County, Indiana. It was in force for 28 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 18, 2012, 3:32 PM EDT (19:32 UTC)
Expired: Jul 18, 2012, 4:00 PM EDT
In force: 28 min
Issued by: NWS Indianapolis, IN

County Brown County, IN

The radar

The Indianapolis radar (KIND), 43 km from the middle of the area, began a volume at 19:32 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

Cncnati-Daytn, OH (KILN), launched 12:00Z, 7.5 hours before the alert went out and 213 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: 2497 J/kg
Mixed-layer CIN: -63 J/kg
Mixed-layer LCL: 1093 m above ground
0-6 km bulk shear: 4 kt
0-1 km storm-relative helicity: -23 m²/s²
0-3 km storm-relative helicity: -5 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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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 18, 3:04 PM EDT, 28 minutes earlier.

Area forecast discussion, Jul 18, 3:04 PM EDT, 28 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
304 PM EDT WED JUL 18 2012

.UPDATE...
THE LONG TERM SECTION HAS BEEN UPDATED BELOW

&&

.SYNOPSIS...
ISSUED AT 106 PM EDT WED JUL 18 2012

A WEAK FRONT WILL REMAIN OVER INDIANA INTO FRIDAY.  FROM FRIDAY TO
MONDAY HIGH PRESSURE IS GOING TO BE FROM THE EAST COAST...ACROSS
INDIANA...TO THE MISSISSIPPI BASIN. A WEAK FRONT IS EXPECTED TO
PASS OUR STATE FROM THE NORTH MONDAY NIGHT OR TUESDAY. AFTER
THAT...HIGH PRESSURE WILL AGAIN TAKE CHARGE OF HOOSIER WEATHER AS IT
MIGRATES FROM THE MISSISSIPPI VALLEY TO THE EAST COAST.

&&

.NEAR TERM /TONIGHT/...

ISSUED AT 106 PM EDT WED JUL 18 2012

BIG ISSUE POPS TONIGHT.

WE ARE ALREADY GETTING POP UP STUFF...BUT MOST
EXTENSIVE ACTIVITY TO OUR NORTHEAST WHERE WET BULB POTENTIAL
TEMPERATURE SHOULD BE GREATEST. WITH ALL MODELS KEEPING MAIN
BOUNDARY NORTHEAST OF CWA TONIGHT...HOPEFULLY WE WILL AVOID
ORGANIZED STUFF. MAV POPS BEST UNDER THIS THEORY.

FOR TEMPERATURES...ADDING A COUPLE DEGREES TO MET. THAT WORKED OK
LAST NIGHT IN SIMILAR AIR.

&&

.SHORT TERM /THURSDAY THROUGH SATURDAY/...

ISSUED AT 106 PM EDT WED JUL 18 2012

POPS MAIN ISSUE.

GFS IS CLOSER TO SREF ON MASS FIELDS THAN TO NAM...AND HAS BEEN
BETTER IN THAT REGARD THAN NAM LATELY. THIS WILL BE CRITICAL TO
POPS TOMORROW NIGHT AS LOW AND ASSOCIATED BOUNDARIES CROSS THE
STATE. ALSO RELATIVELY STRONG SHORT WAVE COMING THROUGH AT THE
TIME...AS HAS BEEN PROGGED FOR SEVERAL DAYS.

THEREFORE USING MAV POPS THURSDAY NIGHT PERIOD. FOR OTHER TIMES
POPS RELATIVELY CLOSE...AND WILL SPLIT THE DIFFERENCE.

ALTHOUGH CLOUDS AND BOUNDARIES AROUND SHOULD COOL US A BIT DURING
DAYS AND WARM US A BIT DURING NIGHTS COMPARED TO RECENTLY...BASIC
AIR MASS IS NOT CHANGING. WILL USE RECENT TECHNIQUE OF ADDING A
FEW DEGREES TO MET DAYS AND TO MODEL CONSENSUS NIGHTS.

&&

.LONG TERM /SATURDAY EVENING THROUGH WEDNESDAY/...

ISSUED AT 255 PM EDT WED JUL 18 2012

MODELS ARE AGREEABLE TO ESTABLISHING MID LEVEL RIDGE OVER THE
CENTRAL ROCKIES AND CENTRAL PLAINS INTO THE LOWER OHIO VALLEY.
THE EASTERN PART OF THE RIDGE WILL WEAKEN GOING INTO LATE MONDAY
THROUGH TUESDAY ALLOWING NORTHWESTERLY FLOW ALOFT AND ALLOWING A
WEAK FRONTAL BOUNDARY ACROSS THE GREAT LAKES INTO THE OHIO VALLEY.
LOOKS LIKE RAINFALL CHANCES WILL BE BEST WITH THE FRONTAL BOUNDARY
AS THE GFS LOOKS TO HANG THIS BOUNDARY UP NORTH OF THE AREA.
TEMPERATURES LOOK TO BE IN THE LOW/MID 90S THROUGH THE PERIOD AT
THIS TIME.

&&

.AVIATION /1500Z UPDATE TO 1200Z TAFS/...

ISSUED AT 1027 AM EDT WED JUL 18 2012

MAINLY VFR CONDITIONS CONTINUING AT THIS TIME. RADAR SHOWS
ISOLATED STORM NORTH OF KIND/KEYE SLOWLY DRIFTING EWD NEAR KOKK.
THERE LOOKS TO BE A WEAK BOUNDARY THAT EXTENDS WEST AND SOUTHWEST
TOWARDS KDNV WHERE A -SHRA HAS RECENTLY DEVELOPED. LOOK FOR
SCATTERED CONVECTION THIS AFTERNOON AS HEAT OF THE DAY WITH HIGH
TEMPERATURES AGAIN AROUND 100 LEAD TO THUNDERSTORMS IN THE
VICINITY OF LOCAL AIRPORTS.

&&

.IND WATCHES/WARNINGS/ADVISORIES...
HEAT ADVISORY UNTIL 8 PM EDT THIS EVENING FOR INZ021-028>031-
035>049-051>057-060>065-067>072.

&&

SYNOPSIS...JK
NEAR TERM...JK
SHORT TERM...JK
LONG TERM....DWM
AVIATION...DWM

Hazardous weather outlook, Jul 18, 9:08 AM EDT, 6 hours 24 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
908 AM EDT WED JUL 18 2012

INZ021-028>031-035>049-051>057-060>065-067>072-191315-
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-
908 AM EDT WED JUL 18 2012

THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL INDIANA.

.DAY ONE...TODAY AND TONIGHT.

OUTLOOK: THUNDERSTORMS ARE POSSIBLE TODAY. SOME STORMS THIS AFTERNOON
AND EVENING COULD BE SEVERE. A HEAT ADVISORY REMAINS IN EFFECT.

HAZARDS: LIGHTNING IS THE MAIN THREAT FROM ANY THUNDERSTORMS. SOME
STORMS THIS AFTERNOON AND EVENING COULD PRODUCE DAMAGING WINDS AND BRIEF
HEAVY RAIN. HIGH TEMPERATURES NEAR 100 WILL RESULT IN HEAT INDEX
READINGS AROUND 105 THIS AFTERNOON.

TIMING: THIS AFTERNOON AND EVENING.

DISCUSSION: A VERY WARM RIDGE OF HIGH PRESSURE WILL REMAIN ACROSS
THE AREA TODAY LEADING TO HOT TEMPERATURES. THE HOT AND MOIST AIR
MASS WILL ALSO LEAD TO SCATTERED THUNDERSTORMS THIS AFTERNOON AND EVENING.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY.

OUTLOOK: SCATTERED THUNDERSTORMS ARE POSSIBLE THURSDAY AND
THURSDAY NIGHT. SEVERE STORMS ARE POSSIBLE...WITH DANGEROUS
LIGHTNING...HIGH WINDS...AND BRIEF HEAVY RAINFALL.

DISCUSSION: A COLD FRONT WILL ACROSS CENTRAL INDIANA ON THURSDAY
AND THURSDAY NIGHT BRINGING CONTINUED CHANCES FOR THUNDERSTORMS.
THERE IS A CHANCE FOR MORE THUNDERSTORMS ON TUESDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT ANTICIPATED.

&&

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

JK

In the hours before

Special weather statement, Jul 18, 2:18 PM EDT, 1 hour 14 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
218 PM EDT WED JUL 18 2012

INZ047-055-181900-
JOHNSON-MARION-
218 PM EDT WED JUL 18 2012

...STRONG THUNDERSTORM ADVISORY FOR NORTHERN JOHNSON AND SOUTHERN
MARION COUNTIES UNTIL 300 PM EDT...

AT 213 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM 6 MILES EAST OF PLAINFIELD...OR 9 MILES SOUTHWEST
OF INDIANAPOLIS...MOVING SOUTHEAST AT 15 MPH.

WIND GUSTS UP TO 50 MPH ARE EXPECTED WITH THIS STORM...ALONG WITH
HEAVY RAIN.

LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE...
  BEECH GROVE...
  SOUTHPORT...
  GREENWOOD...
  HOMECROFT...
  NEW WHITELAND...
  WHITELAND...

IF THREATENING WEATHER APPROACHES YOUR AREA...TAKE SHELTER IN A
STURDY BUILDING.

TORRENTIAL RAIN...WHICH MAY FLOOD LOW LYING AREAS SUCH AS DITCHES AND
UNDERPASSES...IS ALSO LIKELY. DO NOT DRIVE YOUR VEHICLE ON A FLOODED
ROADWAY.

&&

LAT...LON 3950 8604 3958 8625 3963 8625 3963 8633
      3977 8633 3980 8630 3970 8595 3965 8595
TIME...MOT...LOC 1818Z 296DEG 12KT 3969 8626

50

Special weather statement, Jul 18, 2:33 PM EDT, 59 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
233 PM EDT WED JUL 18 2012

INZ056-057-065-181900-
DECATUR-RUSH-SHELBY-
233 PM EDT WED JUL 18 2012

...STRONG THUNDERSTORM ADVISORY FOR NORTHWESTERN DECATUR...
SOUTHWESTERN RUSH AND SOUTHEASTERN SHELBY COUNTIES UNTIL 300 PM
EDT...

AT 232 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM 6 MILES SOUTHEAST OF SHELBYVILLE...MOVING
SOUTHEAST AT 15 MPH.

WIND GUSTS UP TO 50 MPH ARE EXPECTED WITH THIS STORM...ALONG WITH
HEAVY RAIN.

LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE...
  WALDRON...
  GENEVA...
  ST. PAUL...
  MOSCOW...
  ADAMS...
  SANDUSKY...

IF THREATENING WEATHER APPROACHES YOUR AREA...TAKE SHELTER IN A
STURDY BUILDING.

TORRENTIAL RAIN...WHICH MAY FLOOD LOW LYING AREAS SUCH AS DITCHES AND
UNDERPASSES...IS ALSO LIKELY. DO NOT DRIVE YOUR VEHICLE ON A FLOODED
ROADWAY.

&&

LAT...LON 3945 8540 3934 8566 3947 8584 3959 8568
TIME...MOT...LOC 1833Z 307DEG 13KT 3949 8567

50

Special weather statement, Jul 18, 2:49 PM EDT, 43 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
249 PM EDT WED JUL 18 2012

INZ045-046-054-181930-
HENDRICKS-MORGAN-PUTNAM-
249 PM EDT WED JUL 18 2012

...STRONG THUNDERSTORM ADVISORY FOR SOUTHWESTERN HENDRICKS...
NORTHWESTERN MORGAN AND EASTERN PUTNAM COUNTIES UNTIL 330 PM EDT...

AT 246 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM 10 MILES EAST OF GREENCASTLE...OR 30 MILES
SOUTHWEST OF INDIANAPOLIS...MOVING SOUTHEAST AT 15 MPH.

WIND GUSTS UP TO 50 MPH ARE EXPECTED WITH THIS STORM...ALONG WITH
HEAVY RAIN.

LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE...
  LITTLE POINT...
  EMINENCE...
  MONROVIA...
  CENTERTON...
  LAKE HART...
  BETHANY...

IF THREATENING WEATHER APPROACHES YOUR AREA...TAKE SHELTER IN A
STURDY BUILDING.

TORRENTIAL RAIN...WHICH MAY FLOOD LOW LYING AREAS SUCH AS DITCHES AND
UNDERPASSES...IS ALSO LIKELY. DO NOT DRIVE YOUR VEHICLE ON A FLOODED
ROADWAY.

&&

LAT...LON 3960 8679 3967 8658 3962 8644 3952 8637
      3941 8658 3945 8663 3947 8663 3947 8665
TIME...MOT...LOC 1849Z 317DEG 12KT 3960 8665

50

Special weather statement, Jul 18, 3:02 PM EDT, 30 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
302 PM EDT WED JUL 18 2012

INZ054-055-181930-
JOHNSON-MORGAN-
302 PM EDT WED JUL 18 2012

...STRONG THUNDERSTORM ADVISORY FOR SOUTHERN JOHNSON AND EASTERN
MORGAN COUNTIES UNTIL 330 PM EDT...

AT 259 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM 9 MILES EAST OF MARTINSVILLE...OR 22 MILES SOUTH
OF INDIANAPOLIS...MOVING SOUTHEAST AT 10 MPH.

WIND GUSTS UP TO 50 MPH ARE EXPECTED WITH THIS STORM...ALONG WITH
HEAVY RAIN.

LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE...
  FRANKLIN...
  BARGERSVILLE...
  MORGANTOWN...
  TRAFALGAR...
  PRINCES LAKES...

IF THREATENING WEATHER APPROACHES YOUR AREA...TAKE SHELTER IN A
STURDY BUILDING.

TORRENTIAL RAIN...WHICH MAY FLOOD LOW LYING AREAS SUCH AS DITCHES AND
UNDERPASSES...IS ALSO LIKELY. DO NOT DRIVE YOUR VEHICLE ON A FLOODED
ROADWAY.

&&

LAT...LON 3934 8603 3934 8615 3939 8641 3957 8626
      3948 8595
TIME...MOT...LOC 1902Z 307DEG 7KT 3946 8626

50

Local storm report, Jul 18, 3:28 PM EDT, 4 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
328 PM EDT WED JUL 18 2012

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0327 PM     HAIL             4 N MARTINSVILLE        39.48N  86.42W
07/18/2012  E0.25 INCH       MORGAN             IN   TRAINED SPOTTER

&&

EVENT NUMBER IND1200397

BHH

Special weather statement, Jul 18, 3:32 PM EDT, 0 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
332 PM EDT WED JUL 18 2012

INZ054-055-063-182000-
BROWN-JOHNSON-MORGAN-
332 PM EDT WED JUL 18 2012

...STRONG THUNDERSTORM ADVISORY FOR NORTHERN BROWN...SOUTHWESTERN
JOHNSON AND SOUTHEASTERN MORGAN COUNTIES UNTIL 400 PM EDT...

AT 327 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM 8 MILES SOUTHEAST OF MARTINSVILLE...OR 18 MILES
NORTHEAST OF BLOOMINGTON...MOVING SOUTHEAST AT 10 MPH.

HAIL UP TO ONE-HALF INCH IN DIAMETER AND WIND GUSTS UP TO 50 MPH ARE
EXPECTED WITH THIS STORM...ALONG WITH HEAVY RAIN.

LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE...
  BEANBLOSSOM...
  HELMSBURG...
  SPEARSVILLE...
  PEOGA...

IF THREATENING WEATHER APPROACHES YOUR AREA...TAKE SHELTER IN A
STURDY BUILDING.

TORRENTIAL RAIN...WHICH MAY FLOOD LOW LYING AREAS SUCH AS DITCHES AND
UNDERPASSES...IS ALSO LIKELY. DO NOT DRIVE YOUR VEHICLE ON A FLOODED
ROADWAY.

&&

LAT...LON 3921 8629 3932 8638 3934 8638 3934 8640
      3937 8643 3948 8626 3934 8609 3929 8608
      3928 8609
TIME...MOT...LOC 1932Z 326DEG 7KT 3935 8630

50

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 18, 12:33 PM EDT	Special Weather Statement	IND	Hancock	42 min
Jul 18, 1:10 PM EDT	Special Weather Statement	IND	Hamilton, Hancock	50 min
Jul 18, 1:24 PM EDT	Special Weather Statement	IND	Marion	51 min
Jul 18, 1:34 PM EDT	Special Weather Statement	IND	Hancock	26 min
Jul 18, 2:18 PM EDT	Special Weather Statement	IND	Marion	42 min
Jul 18, 2:33 PM EDT	Special Weather Statement	IND	Shelby	27 min
Jul 18, 2:49 PM EDT	Special Weather Statement	IND	Morgan	41 min
Jul 18, 3:02 PM EDT	Special Weather Statement	IND	Johnson	28 min
Jul 18, 3:48 PM EDT	Severe Thunderstorm Warning	IND	Bartholomew, Jackson, Jennings	27 min
Jul 18, 4:06 PM EDT	Special Weather Statement	IND	Brown	24 min
Jul 18, 4:11 PM EDT	Special Weather Statement	IND	Delaware	49 min
Jul 18, 4:30 PM EDT	Special Weather Statement	IND	Brown	30 min
Jul 18, 4:55 PM EDT	Special Weather Statement	IND	Carroll	35 min
Jul 18, 5:15 PM EDT	Special Weather Statement	IND	Greene	30 min
Jul 18, 5:33 PM EDT	Special Weather Statement	IND	Knox	27 min

Nearby

Special Weather Statements in Indiana, 2012 Every special weather statement in 2012

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.