Alert archive / Indiana / Special Weather Statements in 2012

Special Weather Statement, NWS Northern Indiana

July 19, 2012Blackford County, Indiana

NWS Northern Indiana issued this special weather statement at Jul 19, 2012, 7:19 PM EDT for Blackford County, Indiana. It was in force for 41 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 19, 2012, 7:19 PM EDT (23:19 UTC)
Expired
Jul 19, 2012, 8:00 PM EDT
In force
41 min
Issued by
NWS Northern Indiana

County Blackford County, IN

The radar

The Northern Indiana radar (KIWX), 111 km from the middle of the area, began a volume at 23:21 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, 11.3 hours before the alert went out and 169 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 2012-07-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 922 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 2012-07-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 92 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
922 J/kg
Mixed-layer CIN
-94 J/kg
Mixed-layer LCL
1009 m above ground
0-6 km bulk shear
14 kt
0-1 km storm-relative helicity
92 m²/s²
0-3 km storm-relative helicity
75 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 Northern Indiana wrote its last area forecast discussion before this special weather statement went out at Jul 19, 3:14 PM EDT, 4 hours 5 minutes earlier.

Area forecast discussion, Jul 19, 3:14 PM EDT, 4 hours 5 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORTHERN INDIANA
314 PM EDT THU JUL 19 2012

.SHORT TERM... /TONIGHT THROUGH FRIDAY NIGHT/

FOCUS REMAINS ON NEXT 6 TO 12 HR PERIOD WITH APPROACH OF WEAK SFC
LOW AND ASSOCIATED CONVECTIVE DEVELOPMENT.

CLEARING HAS SPREAD ACROSS MUCH OF NORTHERN INDIANA WITH HEATING AND
DESTABILIZATION UNDERWAY. VIS SAT SHOWING TRIPLE POINT OF
APPROACHING LOW NICELY...CENTERED BETWEEN KANKAKEE AND DANVILLE
ILLINOIS. CU FIELD WAS ATTEMPTING TO EXPAND ALONG THIS FEATURE WITH
INITIATION OF STORMS LIKELY IN THIS AREA OVER THE NEXT HOUR OR 2.
CU/STRATOCU FIELD CONTINUES TO EXPAND ACROSS N ILLINOIS WITH SIGNS
OF DEVELOPMENT/BUILDING INTO NW INDIANA. RAP/HRRR RAPIDLY BREAK OUT
CONVECTION BUT VARY ON LOCATION AND COVERAGE. EARLIER UPDATE APPEARS
TO REFLECT BEST POTENTIAL AREA ACROSS S/SW COUNTIES. SOME CHANCE
THAT CONVECTION COULD FIRE JUST TO OUR SOUTH TOWARDS LAFAYETTE AND
THEN EVOLVE MORE INTO CENTRAL INDIANA AND POSSIBLY SKIRTING SOUTH OF
US-24.  WILL LEAVE FORECAST ALONE WITH PRE 1ST PERIOD TO HANDLE BEST
WINDOW.

PRECIP MAY LINGER INTO THE OVERNIGHT HOURS BUT SHOULD RAPIDLY MOVE
OUT AFTER MIDNIGHT. THINK POPS MAY BE OVERDONE BUT WITH SOME HIGH
RES MODELS HINTING AT ACTIVITY INTO THE OVERNIGHT HOURS WILL LEAVE
AS IS. LOWS WILL DROP BACK INTO THE MID TO UPR 60S.

EFFECTIVE BOUNDARY SHOULD BE LOCATED SOUTH OF THE AREA WITH DRIER
CONDITIONS FOR MUCH OF THE REGION. GIVEN PROXIMITY OF THE
BOUNDARY...A STRAY SHOWER OR STORM CAN'T BE RULED OUT IN THE FAR
SOUTH BUT FEEL CHANCES NOT ENOUGH TO INTRODUCE INTO GRIDS. HIGHS
WILL CLIMB INTO THE MID 80S ACROSS THE AREA. LOWS FRI NGT WILL DROP
TO MORE COMFORTABLE LEVELS AROUND 60 TO THE LOWER 60S.

&&

.LONG TERM...
SIG SHRT TERM DROUGHT AMELIORATION OVERNIGHT LENDS AN INTERESTING
DICHOTOMY OF SORTS THIS PD IN REGARD TO PCPN POTENTIAL NXT WEEK.

UNDERPINNING PATTN OF ACTIVE WRLY FLW ACRS SRN CANADA/NRN US CONTS
OVRTOP PERSISTENT SUB-TROPICAL RIDGE CNTRD OVR THE CNTRL PLAINS.
CONTD PARADE OF RIDGE RIDERS AND SWD WK FNTL EXCURSIONS MAKE LTR PDS
TRICKY WRT CONV CHCS. HWVR W/SIG WIDESPREAD HEAVY RAINFALL OVERNIGHT
SHRTR SITUATION HAS TURNED DECIDEDLY MORE FVRBL W/XPCN FOR
SUBSTANTIAL BNDRY LYR MSTR IMPROVEMENT INADV OF SFC FNTL BNDRY
ASSOCD/W NXT SW OVRTOPPING PLAINS RIDGE ON MON AND LIKELY W/MORE
SUBSTANTIAL SW INDICATED LT WED. THUS WILL BREAK FM PRIOR CONTINUITY
WHICH SIDED W/PERSISTENT DRYNESS AND HEDGE TWD IMPLIED WETTER
SOLUTIONS MON AND THU.

OTHERWISE SOIL MSTR RECHARGE SHLD DAMPEN MIXED LYR DEPTHS WITHIN THE
HEART OF LL THERMAL RIDGE NXT WEEK AND WILL CONT MIDNIGHT TREND OF
FOLLOWING SLIGHTLY COOLER BLENDED SOLUTIONS.

&&

.AVIATION...
FOCUS WILL BE ON AFTERNOON PERIOD WITH POTENTIAL FOR CONVECTIVE
DEVELOPMENT AT BOTH SITES. GIVEN PROXIMITY OF SFC LOW...BETTER
CHANCE WILL EXIST AT KFWA WITH JUST AN OUTSIDE CHANCE AT KSBN.
PREV ISSUANCE/AMENDMENTS ALREADY HAVE THIS IN HAND SO NO CHANGES
WERE REQUIRED. LARGE AREA OF MVFR OR LOWER CIGS EXPECTED AT BOTH
SITES FROM COMBINATION OF STRATUS ALREADY MOVING IN BEHIND THE LOW
AND ADDITIONAL DEVELOPMENT IN AREAS OF CLEARING AS A RESULT OF
MOIST BL FROM RECENT RAINFALL. HAVE BROUGHT CIGS DOWN TO 1000 FT
AND MAY NEED TO LWR FURTHER IN LATER ISSUANCES. WINDS WILL COME
AROUND TO THE NE IN THE WAKE OF THE LOW AND REMAIN AROUND 10 KTS.

&&

.IWX WATCHES/WARNINGS/ADVISORIES...
IN...NONE.
MI...NONE.
OH...NONE.
LM...NONE.
&&

SHORT TERM...FISHER
LONG TERM...T
AVIATION...FISHER
Hazardous weather outlook, Jul 19, 6:19 PM EDT, 1 hour before
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In the hours before

Special weather statement, Jul 19, 6:15 PM EDT, 1 hour 4 minutes before
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Special weather statement, Jul 19, 7:16 PM EDT, 3 minutes before
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Special weather statement, Jul 19, 7:19 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
Jul 18, 9:03 PM EDTSpecial Weather StatementIWXSteuben57 min
Jul 18, 10:50 PM EDTSpecial Marine WarningIWX115 min
Jul 18, 11:43 PM EDTSevere Thunderstorm WarningIWXLaPorte, Saint Joseph62 min
Jul 19, 12:26 AM EDTSevere Thunderstorm WarningIWXLaPorte, Marshall, Saint Joseph, Starke64 min
Jul 19, 12:29 AM EDTFlash Flood WarningIWXLaPorte, Saint Joseph3 hr
Jul 19, 1:03 AM EDTSevere Thunderstorm WarningIWXElkhart, Kosciusko, Marshall, Saint Joseph57 min
Jul 19, 1:12 AM EDTAreal Flood AdvisoryIWXMarshall, Saint Joseph, Starke3 hr
Jul 19, 1:45 AM EDTSpecial Weather StatementIWXLaGrange, Noble, Whitley60 min
Jul 19, 2:33 AM EDTSpecial Weather StatementIWXDeKalb, LaGrange, Noble, Steuben57 min
Jul 19, 4:04 AM EDTSpecial Weather StatementIWXElkhart, Saint Joseph41 min
Jul 19, 5:19 AM EDTAreal Flood AdvisoryIWXElkhart, Fulton, Kosciusko, LaGrange, Marshall, Noble and 2 more3 hr
Jul 19, 5:35 AM EDTFlash Flood WarningIWXAllen, DeKalb, Huntington, Kosciusko, LaGrange, Noble and 4 more115 min
Jul 19, 5:53 AM EDTFlash Flood WarningIWXAllen, DeKalb3 hr
Jul 19, 6:22 AM EDTFlash Flood WarningIWXElkhart, LaGrange, LaPorte, Noble, Saint Joseph3 hr
Jul 19, 6:44 AM EDTSpecial Weather StatementIWXHuntington, Kosciusko, Miami, Wabash, Whitley61 min
Jul 19, 3:28 PM EDTSmall Craft AdvisoryIWX31 hr
Jul 19, 6:03 PM EDTRip Current StatementIWX34 hr
Jul 19, 7:16 PM EDTSpecial Weather StatementIWXMiami44 min
Jul 18, 10:00 PM EDTSpecial Weather StatementIWXFulton, Williams45 min
Jul 19, 6:15 PM EDTSpecial Weather StatementIWXVan Wert30 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.