Alert archive / Indiana / Special Weather Statements in 2012

Special Weather Statement, NWS Indianapolis, IN

July 17, 2012Jackson County, Indiana

NWS Indianapolis, IN issued this special weather statement at Jul 17, 2012, 6:57 PM EDT for Jackson County, Indiana. It was in force for 33 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 17, 2012, 6:57 PM EDT (22:57 UTC)
Expired
Jul 17, 2012, 7:30 PM EDT
In force
33 min
Issued by
NWS Indianapolis, IN

County Jackson County, IN

The radar

The Louisville radar (KLVX), 92 km from the middle of the area, began a volume at 22:59 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, 11.0 hours before the alert went out and 212 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, Cncnati-Daytn, OH at 12:00Z on 2012-07-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2344 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, Cncnati-Daytn, OH at 12:00Z on 2012-07-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -44 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
2344 J/kg
Mixed-layer CIN
-38 J/kg
Mixed-layer LCL
979 m above ground
0-6 km bulk shear
5 kt
0-1 km storm-relative helicity
-44 m²/s²
0-3 km storm-relative helicity
-20 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.

<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Service Notice</title>
  <link rel="stylesheet" href="index.css">
</head>
<body>
  <main class="wrap">
    <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.
      </p>
      <p id="message2">
        Please try again in a few minutes.
      </p>
      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>

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 17, 4:29 PM EDT, 2 hours 28 minutes earlier.

Area forecast discussion, Jul 17, 4:29 PM EDT, 2 hours 28 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
429 PM EDT TUE JUL 17 2012

.UPDATE...

AVIATION SECTION HAS BEEN UPDATED BELOW.

&&

.SYNOPSIS...
ISSUED AT 350 PM EDT TUE JUL 17 2012

A RIDGE OF HIGH PRESSURE REMAINS THE DOMINANT FORCE OVER THE
AREA...WITH HOT CONDITIONS AND ISOLATED THUNDERSTORMS. A COLD
FRONT WILL SAG TOWARD THE AREA TOMORROW INTO THURSDAY...MOVING
SOUTH OF THE AREA BY FRIDAY EVENING. THIS WILL BRING SOME RELIEF
FROM THE HEAT LATE THIS WEEK INTO THE EARLY PART OF THE
WEEKEND...AS WELL AS THE POSSIBILITY FOR SOME SCATTERED SHOWERS
AND STORMS. THE RIDGE BEGINS TO RESTRENGTHEN LATE IN THE WEEKEND
INTO EARLY NEXT WEEK...WHICH WILL ONCE AGAIN RETURN WIDESPREAD 90
DEGREE TEMPERATURES TO THE FORECAST.

&&

.NEAR TERM /TONIGHT/...
ISSUED AT 350 PM EDT TUE JUL 17 2012

OVERNIGHT...ASIDE FROM ISOLATED THUNDERSTORMS WHICH WILL LINGER
INTO THE EARLY HOURS OF THE OVERNIGHT...EXPECT DRY CONDITIONS AND
PARTLY CLOUDY SKIES. WITH LITTLE CHANGE IN AIRMASS BEYOND A SLIGHT
WARMING AND A SLIGHT INCREASE IN DEWPOINTS...TEMPS SHOULD BOTTOM
OUT A DEGREE OR TWO ABOVE PERSISTENCE...AND WENT WITH THIS RATHER
THAN MOS WHICH LOOKS SEVERAL DEGREES TOO COOL.

&&

.SHORT TERM /WEDNESDAY THROUGH FRIDAY/...
ISSUED AT 350 PM EDT TUE JUL 17 2012

ONCE AGAIN WEDNESDAY...HOT CONDITIONS WILL BE THE RULE. SOME
ADDITIONAL UNCERTAINTY WITH RESPECT TO TEMPERATURES AS STORM
CHANCES MAY BE SLIGHTLY BETTER AS THE BOUNDARY SAGS TOWARD THE
AREA...BUT WITH GUIDANCE NOW SLOWING UP THE SOUTHWARD PROGRESSION
OF THE FRONT...EXPECT THAT TEMPS AT OR JUST ABOVE PERSISTENCE ARE
A GOOD BET. THIS ONCE AGAIN YIELDS MID 90S TO AROUND 100...AND
HEAT INDICES WELL INTO THE 105 RANGE AROUND THE AREA. MIDNIGHT
SHIFT EXTENDED HEAT ADVISORY THROUGH TOMORROW...AND THIS IS A GOOD
PLAN TO KEEP.

BOUNDARY SAGS INTO THE AREA ON THURSDAY...BUT GIVEN THAT
MODELS...EVEN THE NAM WHICH HAS BEEN SIGNIFICANTLY MORE RELIABLE
THAN THE GFS FOR A COUPLE OF MONTHS NOW...APPEAR TO BE FAIRLY
BULLISH ON PRECIP FOR BEING IN THE MIDDLE OF EXTREME
DROUGHT...HAVE GONE ABOVE MOS GUIDANCE BY SEVERAL DEGREES
THURSDAY...AND AGAIN ON FRIDAY BUT TO NOT QUITE THE SAME EXTENT.
ADDITIONALLY...HAVE GONE TOWARD THE LOWER END ON POPS...NOT HIGHER
THAN 40 PERCENT...GIVEN LENGTHY RECENT TREND OF SYSTEMS STRUGGLING
TO PRODUCE PRECIP OVER THE AREA. WHILE THIS WOULD APPEAR AT FIRST
GLANCE TO OFFER OUR BEST SHOT AT PRECIPITATION IN SOME TIME...THAT
IS NOT SAYING MUCH...AND EVEN WITH SCATTERED COVERAGE IS UNLIKELY
TO MAKE A SIGNIFICANT DENT IN ONGOING DROUGHT.

ON LOW TEMPS...CONTINUED TREND OF BUMPING UP GUIDANCE WITH AT
LEAST SOME CLOUD COVER LIKELY TO PERSIST DURING THE OVERNIGHT
HOURS. THIS AGREES WELL WITH RECENT TRENDS.

&&

.LONG TERM /FRIDAY NIGHT THROUGH TUESDAY/...
ISSUED AT 253 PM EDT TUE JUL 17 2012

THE MAIN FOCUS ON THE EXTENDED WILL BE TEMPERATURES AS THE DROUGHT
IS EXPECTED TO CONTINUE WITH ONLY SPARCE RAIN CHANCES LOOKING LIKE
MONDAY NIGHT AND TUESDAY AS THE PLAINS UPPER RIDGE WEAKENS ALLOWING
A SHORT WAVE TO DROP SOUTHEAST ACROSS CENTRAL INDIANA AND A FRONT TO
TAKE SHOP ACROSS THE LOWER GREAT LAKES.

WITH THE EXTENDED MOS CONTINUING TO HAVE A COLD DAYTIME AND WARM
NIGHTTIME BIAS DUE TO THE DROUGHT...FAVOR DAYTIME TEMPERATURES A FEW
DEGREES WARMER THAN THE MEN MOS AND A DEGREE OR TWO WARMER THAN THE
CENTRAL REGION INITIALIZATION. FAVOR THE OPPOSITE AT NIGHT.

&&

.AVIATION /DISCUSSION FOR 172100Z KIND TAF UPDATE/...
ISSUED AT 429 PM EDT TUE JUL 17 2012

MINOR TWEAKS MADE TO KIND TAF PER OBSERVATIONS. NO OTHER CHANGES
NEEDED AT THIS TIME. PREVIOUS AVIATION DISCUSSION FOLLOWS...

A COLD FRONT WILL DROP SLOWLY SOUTH INTO NORTHERN INDIANA THURSDAY
AFTERNOON WHICH IS EXPECTED TO TRIGGER AFTERNOON THUNDERSTORMS
ACROSS CENTRAL INDIANA. FOR NOW WILL JUST THROW A PROB30 IN AFTER
15Z AT ALL THE SITES. OTHERWISE...DRY GROUNDS SHOULD ONCE AGAIN KEEP
FOG FROM FORMING DESPITE SOUTHWEST WINDS NEAR 10 KNOTS BECOMING
LIGHT TO CALM TONIGHT...AND ANY DIURNAL CU CEILINGS WILL BE VFR.

&&

.IND WATCHES/WARNINGS/ADVISORIES...

HEAT ADVISORY UNTIL 8 PM EDT WEDNESDAY FOR INZ021-028>031-
035>049-051>057-060>065-067>072.

&&

SYNOPSIS...NIELD
NEAR TERM...NIELD
SHORT TERM...NIELD
LONG TERM....MK
AVIATION...MK/JH
Hazardous weather outlook, Jul 17, 5:24 PM EDT, 1 hour 33 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
524 PM EDT TUE JUL 17 2012

INZ021-028>031-035>049-051>057-060>065-067>072-182130-
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-
524 PM EDT TUE JUL 17 2012

THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL INDIANA.

.DAY ONE...LATE THIS AFTERNOON AND TONIGHT.

OUTLOOK: A HEAT ADVISORY REMAINS IN EFFECT. HIGH HEAT INDEX
VALUES WILL CONTINUE INTO EARLY EVENING. THUNDERSTORMS ARE
POSSIBLE INTO THIS EVENING.

HAZARDS: HEAT INDEX READINGS NEAR 105. LIGHTNING...BRIEF HEAVY
RAINFALL...WIND GUSTS OVER 40 MPH.

TIMING: HIGH HEAT INDEX VALUES THROUGH 800 PM. THUNDERSTORMS
THROUGH 1000 PM.

DISCUSSION: THE HOT AIRMASS WILL CONTINUE ACROSS THE AREA. THUNDERSTORMS
WILL BE POSSIBLE INTO THIS EVENING.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY.

OUTLOOK: HIGHS ON WEDNESDAY WILL REACH THE UPPER 90S TO AROUND
100 DEGREES ACROSS MUCH OF THE AREA. HEAT INDEX VALUES COULD REACH
INTO THE 105 TO 110 DEGREE RANGE. A HEAT ADVISORY CONTINUES FOR
ALL OF CENTRAL INDIANA THROUGH 800 PM WEDNESDAY. HIGHS IN THE 90S
WILL CONTINUE ON THURSDAY...WITH HEAT INDEX VALUES AROUND 100
POSSIBLE.

SCATTERED THUNDERSTORMS ARE POSSIBLE WEDNESDAY AFTERNOON THROUGH
FRIDAY. STRONG STORMS ARE POSSIBLE...WITH DANGEROUS
LIGHTNING...GUSTY WINDS...HAIL AND BRIEF HEAVY RAINFALL.

DISCUSSION: A COOL FRONT WILL MOVE INTO CENTRAL INDIANA DURING
THE SECOND HALF OF THE WEEK BRINGING CONTINUED CHANCES FOR THUNDERSTORMS.

.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)

In the hours before

Special weather statement, Jul 17, 6:03 PM EDT, 54 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
603 PM EDT TUE JUL 17 2012

INZ036-037-046-172230-
BOONE-HENDRICKS-MONTGOMERY-
603 PM EDT TUE JUL 17 2012

...STRONG THUNDERSTORM ADVISORY FOR SOUTHWESTERN BOONE...HENDRICKS
AND SOUTHEASTERN MONTGOMERY COUNTIES UNTIL 630 PM EDT...

AT 558 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM 13 MILES NORTHWEST OF DANVILLE...OR 15 MILES
SOUTHEAST OF CRAWFORDSVILLE...MOVING SOUTHEAST AT 10 MPH.

WIND GUSTS UP TO 40 MPH ARE EXPECTED WITH THIS STORM...ALONG WITH
HEAVY RAIN. SOME OF THE WIND GUSTS MAY OCCUR WELL AHEAD OF THE
ACTUAL THUNDERSTORM.

LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE...
  DANVILLE...
  BROWNSBURG...
  JAMESTOWN...
  NORTH SALEM...
  LIZTON...
  PITTSBORO...

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 3992 8633 3969 8647 3980 8669 3987 8669
      3987 8681 4002 8670
TIME...MOT...LOC 2202Z 296DEG 9KT 3991 8665

50
Local storm report, Jul 17, 6:04 PM EDT, 53 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
604 PM EDT TUE JUL 17 2012

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

0540 PM     TSTM WND DMG     GOSPORT                 39.35N  86.67W
07/17/2012                   OWEN               IN   TRAINED SPOTTER

            TREE OF UNKNOWN SIZE AND HEALTH DOWN ON ROAD. POWER
            OUTAGE. SCATTERED 1-INCH TREE LIMBS DOWN ALONG OR NEAR
            STATE ROUTE 67. TIME ESTIMATED.

&&

EVENT NUMBER IND1200388

BHH
Local storm report, Jul 17, 6:35 PM EDT, 22 minutes before
<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Service Notice</title>
  <link rel="stylesheet" href="index.css">
</head>
<body>
  <main class="wrap">
    <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.
      </p>
      <p id="message2">
        Please try again in a few minutes.
      </p>
      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>
Special weather statement, Jul 17, 6:40 PM EDT, 17 minutes before
<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Service Notice</title>
  <link rel="stylesheet" href="index.css">
</head>
<body>
  <main class="wrap">
    <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.
      </p>
      <p id="message2">
        Please try again in a few minutes.
      </p>
      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>
Local storm report, Jul 17, 6:46 PM EDT, 11 minutes before
<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Service Notice</title>
  <link rel="stylesheet" href="index.css">
</head>
<body>
  <main class="wrap">
    <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.
      </p>
      <p id="message2">
        Please try again in a few minutes.
      </p>
      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>
Special weather statement, Jul 17, 6:57 PM EDT, 0 minutes before
<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Service Notice</title>
  <link rel="stylesheet" href="index.css">
</head>
<body>
  <main class="wrap">
    <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.
      </p>
      <p id="message2">
        Please try again in a few minutes.
      </p>
      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 17, 3:49 PM EDTSpecial Weather StatementINDFountain26 min
Jul 17, 4:06 PM EDTSpecial Weather StatementINDSullivan24 min
Jul 17, 4:50 PM EDTSpecial Weather StatementINDBartholomew25 min
Jul 17, 5:10 PM EDTSpecial Weather StatementINDVermillion35 min
Jul 17, 5:34 PM EDTSevere Thunderstorm WarningINDBartholomew, Jackson41 min
Jul 17, 6:03 PM EDTSpecial Weather StatementINDHendricks27 min

Nearby

Special Weather Statements in Indiana, 2012Every 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.