Alert archive / Indiana / Severe Thunderstorm Warnings in 2008

Severe Thunderstorm Warning 237, NWS Indianapolis, IN

December 27, 20084 counties in Indiana

NWS Indianapolis, IN issued this severe thunderstorm warning at Dec 27, 2008, 8:09 PM EST for 4 counties in Indiana. It was in force for 51 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: Dec 27, 2008, 8:09 PM EST (01:09 UTC)
Expired: Dec 27, 2008, 9:00 PM EST
In force: 51 min
Issued by: NWS Indianapolis, IN
Area: Storm-based polygon

Counties Daviess County, IN, Greene County, IN, Knox County, IN, Sullivan County, IN

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The nearest sounding before it

Lincoln, IL (KILX), launched 00:00Z, 1.2 hours before the alert went out and 185 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 501 m above ground
0-6 km bulk shear: 87 kt
0-1 km storm-relative helicity: -9 m²/s²
0-3 km storm-relative helicity: -448 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.

000 
WUUS53 KIND 280109
SVRIND
INC027-055-083-153-280200-
/O.NEW.KIND.SV.W.0237.081228T0109Z-081228T0200Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
809 PM EST SAT DEC 27 2008

THE NATIONAL WEATHER SERVICE IN INDIANAPOLIS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  DAVIESS COUNTY IN SOUTHWEST INDIANA...
  SOUTHWESTERN GREENE COUNTY IN SOUTHWEST INDIANA...
  KNOX COUNTY IN SOUTHWEST INDIANA...
  THIS INCLUDES THE CITY OF VINCENNES...
  SULLIVAN COUNTY IN SOUTHWEST INDIANA...

* UNTIL 900 PM EST/800 PM CST/

* AT 705 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS IN
  EXCESS OF 60 MPH.  THESE STORMS WERE LOCATED ALONG A LINE EXTENDING
  FROM 11 MILES WEST OF MEROM TO 17 MILES WEST OF VINCENNES TO 25
  MILES WEST OF DECKER...OR ALONG A LINE EXTENDING FROM ROBINSON TO 8
  MILES WEST OF LAWRENCEVILLE TO 11 MILES WEST OF MOUNT CARMEL...AND
  MOVING NORTHEAST AT 65 MPH.

* SEVERE THUNDERSTORMS WILL BE NEAR...
  TURTLE CREEK RESERVOIR BY 820 PM EST...
  DECKER BY 825 PM EST...
  PAXTON BY 830 PM EST...
  VINCENNES BY 835 PM EST...

THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE
IMMEDIATELY FOR DAMAGING WINDS...DESTRUCTIVE HAIL...AND DEADLY CLOUD
TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS.

LAT...LON 3842 8774 3851 8766 3864 8763 3874 8751
      3879 8751 3886 8756 3896 8754 3899 8759
      3906 8759 3911 8767 3919 8763 3925 8735
      3867 8696 3851 8707 3855 8720 3851 8730
      3854 8737 3851 8738 3853 8740 3853 8748
TIME...MOT...LOC 0109Z 235DEG 54KT 3905 8770 3873 8776
          3850 8791

$$

CO

3 follow-up statements

000 
WWUS53 KIND 280127
SVSIND

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
827 PM EST SAT DEC 27 2008

INC027-055-083-153-280200-
/O.CON.KIND.SV.W.0237.000000T0000Z-081228T0200Z/
DAVIESS-GREENE-KNOX-SULLIVAN-
827 PM EST SAT DEC 27 2008

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 900 PM EST 
FOR DAVIESS...KNOX...SOUTHWESTERN GREENE AND SULLIVAN COUNTIES...

AT 826 PM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
INDICATE A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING 
DAMAGING WINDS IN EXCESS OF 60 MPH.  THESE STORMS WERE LOCATED ALONG 
A LINE EXTENDING FROM SHELBURN TO OAKTOWN TO 7 MILES WEST OF 
VINCENNES...OR ALONG A LINE EXTENDING FROM 19 MILES SOUTH OF TERRE 
HAUTE TO 14 MILES NORTH OF VINCENNES TO 6 MILES SOUTHEAST OF 
LAWRENCEVILLE...MOVING NORTHEAST AT 60 MPH.

SEVERE THUNDERSTORMS WILL BE NEAR...
  VINCENNES BY 835 PM EST...
  WHEATLAND BY 840 PM EST...
  PLEASANTVILLE BY 845 PM EST...
  MONTGOMERY BY 850 PM EST...

LAT...LON 3842 8774 3851 8766 3864 8763 3874 8751
      3879 8751 3886 8756 3896 8754 3899 8759
      3906 8759 3911 8767 3919 8763 3925 8735
      3867 8696 3851 8707 3855 8720 3851 8730
      3854 8737 3851 8738 3853 8740 3853 8748
TIME...MOT...LOC 0127Z 235DEG 54KT 3920 8741 3888 8747
          3865 8763

$$

000 
WWUS53 KIND 280147
SVSIND

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
847 PM EST SAT DEC 27 2008

INC027-055-083-153-280200-
/O.CON.KIND.SV.W.0237.000000T0000Z-081228T0200Z/
DAVIESS-GREENE-KNOX-SULLIVAN-
847 PM EST SAT DEC 27 2008

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 900 PM EST
FOR DAVIESS...KNOX...SOUTHWESTERN GREENE AND SOUTHEASTERN SULLIVAN
COUNTIES...

AT 845 PM EST...A LINE OF SEVERE THUNDERSTORMS WAS REPORTED CAPABLE
OF PRODUCING DAMAGING WINDS IN EXCESS OF 60 MPH.  THESE STORMS WERE
LOCATED ALONG A LINE EXTENDING FROM DUGGER TO BICKNELL TO DECKER...OR
ALONG A LINE EXTENDING FROM 25 MILES SOUTH OF TERRE HAUTE TO 14 MILES
NORTHEAST OF VINCENNES TO 7 MILES SOUTH OF VINCENNES...MOVING
NORTHEAST AT 60 MPH.

SEVERE THUNDERSTORMS WILL BE NEAR...
  WHEATLAND BY 855 PM EST...
  PLAINVILLE BY 900 PM EST...

LAT...LON 3842 8774 3851 8766 3864 8763 3874 8751
      3879 8751 3886 8756 3901 8738 3914 8728
      3867 8696 3851 8707 3855 8720 3851 8730
      3854 8737 3851 8738 3853 8740 3853 8748
TIME...MOT...LOC 0147Z 235DEG 54KT 3914 8723 3882 8729
          3859 8745

$$

CO

000 
WWUS53 KIND 280200
SVSIND

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
900 PM EST SAT DEC 27 2008

INC027-055-083-153-280210-
/O.EXP.KIND.SV.W.0237.000000T0000Z-081228T0200Z/
DAVIESS-GREENE-KNOX-SULLIVAN-
900 PM EST SAT DEC 27 2008

...THE SEVERE THUNDERSTORM WARNING FOR DAVIESS...KNOX...SOUTHWESTERN
GREENE AND SOUTHEASTERN SULLIVAN COUNTIES HAS EXPIRED...

LAT...LON 3842 8774 3851 8766 3864 8763 3874 8751
      3879 8751 3886 8756 3901 8738 3914 8728
      3867 8696 3851 8707 3855 8720 3851 8730
      3854 8737 3851 8738 3853 8740 3853 8748
TIME...MOT...LOC 0147Z 235DEG 54KT 3914 8723 3882 8729
          3859 8745

$$

What forecasters said that day

The local office's own words before this severe thunderstorm warning 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 severe thunderstorm warning went out at Dec 27, 6:05 PM EST, 2 hours 4 minutes earlier.

Area forecast discussion, Dec 27, 6:05 PM EST, 2 hours 4 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
605 PM EST SAT DEC 27 2008

.AVIATION...DISCUSSION FOR 280000Z TAF ISSUANCE. LEADING EDGE OF SQ
LN CURRENTLY PROGRESSING EWD ACRS THE LOCAL AREA. EXTRAPOLATION
SUGGESTS LEADING EDGE SHOULD BE NR KIND SHORTLY AFT ISSUANCE TIME
AND IN THE KBMG AREA ARND 280100Z. LIGHTNING ACTVTY HAS BECOME MUCH
MORE SPORADIC IN NATURE WITH MOST OF THE INSTABILITY LOCATED S OF
THE OH RVR. THEREFORE...LIGHTNING THREAT AT THE TERMINALS SEEMS TO
HAVE LESSENED. BRIEF IFR RESTRICTIONS AND SOME SFC WND GUSTS
35-40KTS PSBL WITH SQ LN.

OTRW...RATHER LRG AREA OF RAIN BEHIND SQ LN AND AHEAD OF FNT. SOME
IFR CIGS 006-008 AGL STARTING TO SHOW UP WITHIN THE RAIN AREA.
APPEARS SFC WNDS WL BACK ARND TO 140-160 HEADINGS OVR THE NEXT FEW
HRS WITH SOME GUSTS 15-20KTS PSBL. FROPA STILL LOOKS IN THE
280400Z-280600Z TIME FRAME...ALTHOUGH IT NO LONGER LOOKS LIKE MUCH
CONVECTION WL BE ASSOCIATED WITH IT. RAPID WND SHFT TO 250-270
HEADINGS WITH SOME SFC GUSTS ARND 40KTS FOR A FEW HRS AFT FROPA.

&&

.DISCUSSION...
MAIN CHALLENGE TO THE FCST WL BE IN THE SHORT TERM REGARDING
GRADIENT WINDS...SEVERE POTENTIAL..QPF AND CVRG TNGT AS A STG CD FNT
MOVES THROUGH.

REGIONAL RADAR WAS SHOWING A LINE OF SVR TRW'S ACRS WCNTRL IL INTO
SWRN MO JUST AHEAD OF A APCHG STG CD FNT. MEANWHILE...STG SRLY LOW
LVL RETURN FLOW AHEAD OF THE FNT HAS BUMPED TEMPS INTO THE 60S ACRS
ALL OF CNTRL INDIANA EARLY THIS AFTERNOON. FINALLY...UA PATTERRN
FEATURED A SHARP TROF ACRS THE HIGH PLAINS AND A HIGH AMPLITUDE
RIDGE JUST OF THE ERN SHORE.

GFS CONTINUED TO BE A LITTLE BIT FASTER THAN THE NAM PUSHING THE  CD
FNT THROUGH TNGT. WL SPLIT THE DIFFERENCE AS EACH HAS SUPPORT FM
OTHER MODELS. AT ANY RATE...WL MOVE THE FNT THROUGH QUICKLY IN THE
02Z-08Z TIME FRAME TNGT. SO...THE FNT AND THE ASSOCIATE RW ACTIVITY
SHOULD MOVE THROUGH QUICKLY ENOUGH THAT A FLOOD WATCH WL NOT BE
NEEDED DESPITE THE FNT INTERACTING WITH LOW LVL 70 KT JET...RR QUAD
OF 125KT 250 MB JET AND PRECIP H20 VALUES TO 1.5 INCHES.
HOWEVER...WRN HALF OF THE FA IS IN A SLGT RISK THIS EVENING FOR
SEVERE WEATHER AS THE WCNTRL IL SQUALL LINE WL MOVE THROUGH. VERY
STG MAINLY UNI-DIRECTIONAL SHEAR (SRH'S GREATER THAN 500) BUT WEAK
INSTABILITY (ML CAPES BLW 300 J/KG) FAVORS POSSIBILITY OF A FEW WIND
DAMAGE EVENTS...ALTHOUGH WITH MAGNITUDE OF SHEAR CAN NOT RULE OUT
ISOLD TORNADOES. WE HAVE SEEN COLD SEASON SETUPS LIKE THIS BEFORE
(SEPT 20, 2002 BEING ONE) WITH LOTS OF SHEAR AND LITTLE TO NO
INSTABILITY AND YET RECEIVED TORNADOES. AWIPS DISTANCE SPEED TOOL
SUGGESTS SQUALL LINE WL REACH WRN PARTS OF THE FA BY 00Z THIS EVE
AND SPREAD QUICKLY NE UNDER THE SAIL OF 70+ KT DEEP LYR SW WINDS.
40KT WINDS JUST OFF THE SFC SHOULD BE ABLE TO MIX DOWN TNGT
ESPECIALLY ALONG AND BEHIND THE FNT AS AREA OF SUBSIDENCE MOVES
THROUGH JUST AHEAD OF THE STG UPR TROF THAT WL PASS THROUGH TOMORROW
MRNG. TOOK OUT SNOW CHANCES ON THE TAIL END OF THE SYS TNGT AS MODEL
SOUNDINGS AND MOS OVERNGT LOWS SUGGEST.

SFC HIGH PRES WL BUILD IN FM THE W ON SUNDAY AND BE THE MAJOR
INFLUENCE FOR THE START OF THE WEEK. THAT COMBINED WITH A DRY COLUMN
WL ALLOW FOR LITTLE IN THE WAY OF CLOUD COVER. IT WL ALSO ALLOW FOR
TEMPS SLIGHTLY ABV NORMAL WITH STG CAA TNGT BECOMING WEAK ON SUNDAY
AND WEAK WAA BY SUNDAY NGT.

UPR TROF TO PASS ACRS THE GT LKS ON TUE NGT AND WED...BUT WITH LOW
MN LVL RH...EXPECT FA TO BE DRY OR AT BEST JUST A COUPLE OF LGT SNOW
SHOWERS NE. NEXT CHC OF PRECIP LOOKS TO BE BY THU NGT AS A TROF
DEEPENS ACRS THE MSP VLY. TIMING AND ESP THE PLACEMENT OF THE UPR
SYS AND ASSOCIATED SFC SYS ARE QUITE DIFFERENT FOR THE GFS AND
ECMWF...BUT AT ANY RATE SNOW CHANCES LOOK GOOD THU NGT AND FRI.

WENT WITH COMPROMISE ON COOLER NAM AND NOT AS COOL GFS TNGT AS
PARENT MODELS DIFFER A BIT WITH THE SPEED OF THE CD FNT AND EITHER
SIDE HAS SUPPORT FM OTHER MODELS. TEMPS TNGT BASED ON CURRENT POST
FRONTAL TEMPS. MEANWHILE...WITH PLNTY OF SS AND CAA WEAKENING
TOMORROW AFTERNOON...PREFER WARMER NAM/GFS COMBO.

&&

.IND WATCHES/WARNINGS/ADVISORIES...WIND ADVISORY ALL OF CENTRAL
INDIANA FM 18Z SAT-12Z SUN /1PM SAT TO 7AM SUN/.

&&

AVIATION...JAS
PUBLIC...MK

Hazardous weather outlook, Dec 27, 3:20 PM EST, 4 hours 49 minutes before

HAZARDOUS WEATHER OUTLOOK...UPDATED
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
320 PM EST SAT DEC 27 2008

INZ041-042-049-057-064-065-071-072-281100-
DELAWARE-RANDOLPH-HENRY-RUSH-BARTHOLOMEW-DECATUR-JACKSON-JENNINGS-
320 PM EST SAT DEC 27 2008

THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL INDIANA.

.DAY ONE...THIS AFTERNOON AND TONIGHT.

WINDS WILL INCREASE INTO THE 20 TO 30 MPH RANGE THIS AFTERNOON AND
PERSIST THROUGH THE NIGHT. WIND GUSTS OF 40 TO 45 MPH ARE POSSIBLE
THIS AFTERNOON AND TONIGHT.

THUNDERSTORMS ARE POSSIBLE ESPECIALLY THIS EVENING AS A STRONG
COLD FRONT APPROACHES. THE STORMS WILL PRODUCE GUSTY WINDS
POSSIBLY TO 50 MPH. DEADLY CLOUD TO GROUND LIGHTNING IS ALSO POSSIBLE.
STORMS MAY ALSO PRODUCE HEAVY RAINFALL...WHICH MAY LEAD TO
ADDITIONAL LOWLAND FLOODING.

LOWLAND FLOODING WILL CONTINUE ALONG PORTIONS OF THE WHITE...EAST
FORK WHITE...AND WABASH RIVERS.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY.

LOWLAND FLOODING WILL CONTINUE ALONG PORTIONS OF THE EAST FORK
WHITE... AND WABASH RIVERS.

.SPOTTER INFORMATION STATEMENT...

SPOTTER REPORTS OF WIND GUSTS TODAY AND TONIGHT ARE APPRECIATED.

&&

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

INZ021-028>031-035>040-043>048-051>056-060>063-067>070-281100-
CARROLL-WARREN-TIPPECANOE-CLINTON-HOWARD-FOUNTAIN-MONTGOMERY-
BOONE-TIPTON-HAMILTON-MADISON-VERMILLION-PARKE-PUTNAM-HENDRICKS-
MARION-HANCOCK-VIGO-CLAY-OWEN-MORGAN-JOHNSON-SHELBY-SULLIVAN-
GREENE-MONROE-BROWN-KNOX-DAVIESS-MARTIN-LAWRENCE-
320 PM EST SAT DEC 27 2008

THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL INDIANA.

.DAY ONE...THIS AFTERNOON AND TONIGHT.

THUNDERSTORMS ARE POSSIBLE ESPECIALLY THIS EVENING AS A STRONG
COLD FRONT APPROACHES. SOME OF THE STORMS COULD BE SEVERE WITH
DAMAGING WINDS AND ISOLATED TORNADOES POSSIBLE. DEADLY CLOUD TO
GROUND LIGHTNING IS ALSO POSSIBLE. STORMS MAY ALSO PRODUCE HEAVY
RAINFALL...WHICH MAY LEAD TO ADDITIONAL LOWLAND FLOODING.

LOWLAND FLOODING WILL CONTINUE ALONG PORTIONS OF THE WHITE...EAST
FORK WHITE...AND WABASH RIVERS.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY.

LOWLAND FLOODING WILL CONTINUE ALONG PORTIONS OF THE EAST FORK
WHITE... AND WABASH RIVERS.

.SPOTTER INFORMATION STATEMENT...

SPOTTER REPORTS OF WIND GUSTS TODAY AND TONIGHT ARE APPRECIATED.

&&

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

KOCH

In the hours before

Local storm report, Dec 27, 5:11 PM EST, 2 hours 58 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
511 PM EST SAT DEC 27 2008

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

0509 PM     TSTM WND GST     3 N CAYUGA              39.99N 87.46W
12/27/2008  E55 MPH          VERMILLION         IN   TRAINED SPOTTER

            TRAINED SPOTTER REPORTED 55-65 MPH ESTIMATED THUNDERSTORM
            GUSTS IN BETWEEN CAYUGA AND PERRYSVILLE

&&

MKOCH

Local storm report, Dec 27, 5:59 PM EST, 2 hours 10 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
559 PM EST SAT DEC 27 2008

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

0533 PM     TSTM WND DMG     1 S MULBERRY            40.33N 86.67W
12/27/2008                   CLINTON            IN   LAW ENFORCEMENT

            2 TREES DOWN.

&&

MKOCH

The office that day

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

Issued	Product	Office	Counties	Lasted
Dec 27, 7:42 PM EST	Areal Flood Warning	IND	Carroll, Clinton, Fountain, Montgomery, Parke, Putnam and 3 more	8 hr
Dec 27, 7:53 PM EST	River Flood Watch	IND	Carroll, Tippecanoe, White	24 hr
Dec 27, 8:43 PM EST	Severe Thunderstorm Warning	IND	Clay, Daviess, Greene, Monroe, Owen, Putnam	47 min
Dec 28, 12:01 PM EST	River Flood Warning	IND	Greene, Owen	61 hr
Dec 28, 12:01 PM EST	River Flood Warning	IND	Daviess, Greene, Knox	4 days
Dec 28, 12:01 PM EST	River Flood Warning	IND	Daviess, Greene, Knox	4 days
Dec 28, 12:01 PM EST	River Flood Warning	IND	Daviess, Gibson, Knox, Pike	5 days
Dec 28, 12:01 PM EST	River Flood Warning	IND	Daviess, Gibson, Knox, Pike	71 hr

Nearby

Severe Thunderstorm Warnings in Indiana, 2008 Every severe thunderstorm warning in 2008

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.