Alert archive / Indiana / Severe Thunderstorm Warnings in 2009

Severe Thunderstorm Warning 51, NWS Indianapolis, IN

May 30, 20094 counties in Indiana

NWS Indianapolis, IN issued this severe thunderstorm warning at May 30, 2009, 9:57 PM EDT for 4 counties in Indiana. It was in force for 48 min. 2 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: May 30, 2009, 9:57 PM EDT (01:57 UTC)
Expired: May 30, 2009, 10:45 PM EDT
In force: 48 min
Issued by: NWS Indianapolis, IN
Area: Storm-based polygon

Counties Hendricks County, IN, Johnson County, IN, Marion County, IN, Morgan County, IN

The radar

The Indianapolis radar (KIND), 8 km from the middle of the area, began a volume at 02:00 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.

What was reported inside it

Time	Report	Where	Remark
May 30, 10:20 PM EDT	HAIL 0.75	Indianapolis Int'L Airp, IN	MEASURED BY OBSERVERS AT AIRPORT. LASTED 4 MINUTES
May 30, 10:25 PM EDT	HAIL 1	1 W Plainfield, IN	COCORAHS OBSERVER REPORT

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

Did it verify

Verified. The Iowa Environmental Mesonet's Cow matched one storm report to this severe thunderstorm warning; the first came 28 minutes after it went out.

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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
May 30, 7:29 PM EDT	Severe Thunderstorm Watch	SPC	4 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 00:00Z, 2.0 hours before the alert went out and 197 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: 827 J/kg
Mixed-layer CIN: -41 J/kg
Mixed-layer LCL: 1554 m above ground
0-6 km bulk shear: 42 kt
0-1 km storm-relative helicity: 29 m²/s²
0-3 km storm-relative helicity: 107 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 1.9

Open this sounding in Storm Lab

The text

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

000 
WUUS53 KIND 310157
SVRIND
INC063-081-097-109-310245-
/O.NEW.KIND.SV.W.0051.090531T0157Z-090531T0245Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
957 PM EDT SAT MAY 30 2009

THE NATIONAL WEATHER SERVICE IN INDIANAPOLIS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHERN HENDRICKS COUNTY IN CENTRAL INDIANA...
  NORTHWESTERN JOHNSON COUNTY IN CENTRAL INDIANA...
  SOUTHWESTERN MARION COUNTY IN CENTRAL INDIANA...
  NORTHEASTERN MORGAN COUNTY IN CENTRAL INDIANA...

* UNTIL 1045 PM EDT

* AT 956 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
  DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED 8 MILES
  NORTHWEST OF DANVILLE...OR 20 MILES SOUTHEAST OF CRAWFORDSVILLE...
  AND MOVING SOUTHEAST AT 20 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  DANVILLE AROUND 1020 PM EDT...
  CLAYTON AROUND 1030 PM EDT...
  AVON AROUND 1035 PM EDT...
  PLAINFIELD AROUND 1040 PM EDT...

THIS INCLUDES INTERSTATE 70 BETWEEN MILE MARKERS 58 AND 74.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...CONTINUOUS LIGHTNING
IS OCCURRING WITH THIS STORM. MOVE INDOORS IMMEDIATELY REMEMBER...IF
YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE STRUCK BY
LIGHTNING.

&&

LAT...LON 3960 8618 3955 8644 3973 8666 3982 8644
      3982 8629
TIME...MOT...LOC 0157Z 311DEG 17KT 3983 8663

$$

JOHNSON

4 follow-up statements

000 
WWUS53 KIND 310208
SVSIND

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
1008 PM EDT SAT MAY 30 2009

INC063-081-097-109-310245-
/O.CON.KIND.SV.W.0051.000000T0000Z-090531T0245Z/
HENDRICKS-JOHNSON-MARION-MORGAN-
1008 PM EDT SAT MAY 30 2009

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1045 PM EDT
FOR NORTHEASTERN MORGAN...NORTHWESTERN JOHNSON...SOUTHERN HENDRICKS
AND SOUTHWESTERN MARION COUNTIES...

AT 1008 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS
LOCATED NEAR DANVILLE...OR 23 MILES WEST OF INDIANAPOLIS...MOVING
SOUTHEAST AT 20 MPH.

QUARTER SIZE HAIL WAS REPORTED NEAR DANVILLE AT 1006 PM.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  DANVILLE AROUND 1020 PM EDT...
  CLAYTON AROUND 1030 PM EDT...
  AVON AROUND 1035 PM EDT...
  PLAINFIELD AROUND 1045 PM EDT...

LAT...LON 3960 8618 3955 8644 3973 8666 3982 8644
      3982 8629
TIME...MOT...LOC 0208Z 311DEG 17KT 3979 8658

$$

JOHNSON

000 
WWUS53 KIND 310222
SVSIND

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
1022 PM EDT SAT MAY 30 2009

INC063-081-097-109-310245-
/O.CON.KIND.SV.W.0051.000000T0000Z-090531T0245Z/
HENDRICKS-JOHNSON-MARION-MORGAN-
1022 PM EDT SAT MAY 30 2009

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1045 PM EDT
FOR NORTHEASTERN MORGAN...NORTHWESTERN JOHNSON...SOUTHEASTERN
HENDRICKS AND SOUTHWESTERN MARION COUNTIES...

AT 1021 PM EDT...A SEVERE THUNDERSTORM WAS REPORTED CAPABLE OF
PRODUCING QUARTER SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.
 THIS STORM WAS LOCATED NEAR CLAYTON...OR 18 MILES WEST OF
INDIANAPOLIS...MOVING SOUTHEAST AT 20 MPH.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  PLAINFIELD AROUND 1035 PM EDT...
  INDIANAPOLIS INTL AIRPORT AROUND 1040 PM EDT...
  MOORESVILLE AROUND 1045 PM EDT...

LAT...LON 3973 8656 3977 8638 3976 8626 3960 8618
      3955 8644
TIME...MOT...LOC 0222Z 312DEG 19KT 3971 8648

$$

JOHNSON

000 
WWUS53 KIND 310233
SVSIND

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
1033 PM EDT SAT MAY 30 2009

INC063-081-097-109-310245-
/O.CON.KIND.SV.W.0051.000000T0000Z-090531T0245Z/
HENDRICKS-JOHNSON-MARION-MORGAN-
1033 PM EDT SAT MAY 30 2009

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1045 PM EDT
FOR NORTHEASTERN MORGAN...NORTHWESTERN JOHNSON...SOUTHEASTERN
HENDRICKS AND SOUTHWESTERN MARION COUNTIES...

AT 1032 PM EDT...A SEVERE THUNDERSTORM WAS REPORTED CAPABLE OF
PRODUCING QUARTER SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.
 THIS STORM WAS LOCATED NEAR PLAINFIELD...OR 17 MILES SOUTHWEST OF
INDIANAPOLIS...MOVING SOUTHEAST AT 20 MPH.

QUARTER SIZE HAIL WAS REPORTED 1 MILE WEST OF PLAINFIELD AT 1025 PM.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  MOORESVILLE AROUND 1045 PM EDT...

LAT...LON 3966 8646 3971 8639 3968 8622 3960 8618
      3956 8641
TIME...MOT...LOC 0232Z 312DEG 19KT 3967 8643

$$

JOHNSON

000 
WWUS53 KIND 310240
SVSIND

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
1040 PM EDT SAT MAY 30 2009

INC063-081-097-109-310250-
/O.EXP.KIND.SV.W.0051.000000T0000Z-090531T0245Z/
HENDRICKS-JOHNSON-MARION-MORGAN-
1040 PM EDT SAT MAY 30 2009

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN MORGAN...
NORTHWESTERN JOHNSON...SOUTHEASTERN HENDRICKS AND SOUTHWESTERN MARION
COUNTIES WILL EXPIRE AT 1045 PM EDT...

LAT...LON 3966 8646 3971 8639 3968 8622 3960 8618
      3956 8641
TIME...MOT...LOC 0240Z 312DEG 19KT 3964 8639

$$

JOHNSON

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 May 30, 7:22 PM EDT, 2 hours 35 minutes earlier.

Area forecast discussion, May 30, 7:22 PM EDT, 2 hours 35 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
722 PM EDT SAT MAY 30 2009

.AVIATION...

DISCUSSION FOR 00Z TAFS.

TSRA THE ISSUE IN THE FIRST FEW HOURS. WILL HANDLE WITH VCTS
AND CB MENTION GIVEN ITS SCATTERED NATURE AND THEN UPDATE AS
STORMS GET CLOSER AND EXACT TIMING CAN BE DETERMINED. AFTER 03-04Z
THE STORMS WILL END AND THEN IT SHOULD BE VFR FOR THE REST OF THE
PERIOD AS A COLD FRONT CROSSES THE AREA.

&&

.PREV DISCUSSION... /ISSUED 330 PM EDT SAT MAY 30 2009/

DISCUSSION...

PROBLEM OF DAY IS POPS...

THAT BEGINS TONIGHT. CONVECTION HAS NEVER REALLY TAKEN OFF ALONG
DEWPOINT NEAR SW CWA. HOWEVER YOU CAN STILL SEE A FRONT TO OUR
PUSHING INTO ILLINOIS AND A WAVE ALOFT OVER SAME AREA. HARD TO RULE
OUT CHANCE OF CONVECTION COMPLETELY.

IN MORE WESTERN COUNTIES RELATIVELY HIGH POPS ALREADY IN THROUGH 23Z
MAY BE ENOUGH...BUT MOST AREAS WILL NEED A CHANCE FOR EARLY TONIGHT.
WILL BE CLOSER TO MET ON THIS SINCE AS IWX POINTS DRY AIR OVER MOST
OF CWA WILL RESTRAIN THINGS. WILL ALSO ONLY MENTION RW AS OPPOSED TO
TS WHERE DRY AIR DOMINATES.

MODELS ARE IN REASONABLY GOOD AGREEMENT ABOUT SFC HIGH NOW APCHG US
KEEPING DRY WEATHER SUNDAY INTO MONDAY. BY LATE MONDAY QUESTION IS
WHEN NEXT FRONT WILL BRING RAIN. SURPRISINGLY...SREF AND GFS CLOSER
TO EACH OTHER THAN NAM. THIS SUGGESTS NAM SOLN OUTLIER AND MAY NOT
BE OPTIMAL...WHICH IN TURNS SUGGESTS FRONT MAY HANG TO OUR WEST.

ASSUMING FRONT HANGS...IT WILL BE EASY TO FALL INTO TRAP OF BRINGING
IN RAIN TOO FAST. HOWEVER UNTIL I HAVE MORE CONFIDENCE THIS IS HOW
THINGS WILL WORK...I CAN LIFE WITH THE CHC MAV POPS MONDAY INTO
TUESDAY.

GUIDANCE NOT THAT DIFFERENT ON TEMPS. WITH SOUTHLY FLOW DEVELOPING
AROUND HIGH TO SE AS ALL MODELS AGREE...WE MAY GET PRETTY WARM.
HOWEVER THIS WILL BE VERY DEPENDENT ON SKY COVER AND I DONT WANT TO
GET TOO FAR AHEAD OF THE GAME. FOR NOW WILL USE WARMEST OF MAV/MET.

&&

.IND WATCHES/WARNINGS/ADVISORIES...
NONE.
&&

AVIATION...JOHNSON

Hazardous weather outlook, May 30, 3:53 AM EDT, 18 hours 4 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
353 AM EDT SAT MAY 30 2009

INZ021-028>031-035>049-051>057-060>065-067>072-310800-
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-
353 AM EDT SAT MAY 30 2009

THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL INDIANA.

.DAY ONE...TODAY AND TONIGHT.

THUNDERSTORMS ARE POSSIBLE ACROSS ALL OF CENTRAL INDIANA
TODAY. THERE IS A SLIGHT CHANCE THAT SOME STORMS MAY BECOME SEVERE
WITH STRONG WIND...FREQUENT LIGHTNING AND HEAVY RAIN THE MAIN
THREATS.

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

THUNDERSTORMS ARE POSSIBLE AGAIN MONDAY THROUGH WEDNESDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS POSSIBLE LATER THIS AFTERNOON.

&&

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

SALLY

In the hours before

Local storm report, May 30, 9:16 PM EDT, 41 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
916 PM EDT SAT MAY 30 2009

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

0915 PM     HAIL             7 ENE INDIANAPOLIS      39.82N 86.02W
05/30/2009  U0.75 INCH       MARION             IN   AMATEUR RADIO

&&

NIELD

Local storm report, May 30, 9:25 PM EDT, 32 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
925 PM EDT SAT MAY 30 2009

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

0921 PM     HAIL             6 S MCCORDSVILLE        39.82N 85.93W
05/30/2009  E1.00 INCH       HANCOCK            IN   TRAINED SPOTTER

&&

JOHNSON

Local storm report, May 30, 9:30 PM EDT, 27 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
930 PM EDT SAT MAY 30 2009

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

0920 PM     HAIL             LAWRENCE                39.87N 85.99W
05/30/2009  U1.75 INCH       MARION             IN   TRAINED SPOTTER

&&

NIELD

Local storm report, May 30, 9:33 PM EDT, 24 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
933 PM EDT SAT MAY 30 2009

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

0925 PM     TSTM WND DMG     5 S MCCORDSVILLE        39.84N 85.93W
05/30/2009                   HANCOCK            IN   TRAINED SPOTTER

            TREES AND LIMBS WERE DOWNED NEAR THE INTERSTATE 70 MOUNT
            COMFORT EXIT. DIME SIZE HAIL ALSO REPORTED.

&&

NIELD

Local storm report, May 30, 9:42 PM EDT, 15 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
942 PM EDT SAT MAY 30 2009

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

0940 PM     TSTM WND GST     2 NE BROWNSBURG         39.86N 86.37W
05/30/2009  E50 MPH          HENDRICKS          IN   NWS EMPLOYEE

            50 MPH ESTIMATED WIND GUSTS WITH PEA TO MARBLE SIZED
            HAIL.

&&

NIELD

Local storm report, May 30, 9:53 PM EDT, 4 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
953 PM EDT SAT MAY 30 2009

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

0855 PM     HAIL             CRAWFORDSVILLE          40.04N 86.90W
05/30/2009  E1.00 INCH       MONTGOMERY         IN   BROADCAST MEDIA

            WIND GUSTS ESTIMATED TO 70 MPH AS WELL.

&&

JOHNSON

The office that day

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

Issued	Product	Office	Counties	Lasted
May 30, 8:02 PM EDT	Severe Thunderstorm Warning	IND	Henry, Rush	13 min
May 30, 8:08 PM EDT	Severe Thunderstorm Warning	IND	Montgomery, Tippecanoe	27 min
May 30, 8:11 PM EDT	Severe Thunderstorm Warning	IND	Carroll, Howard, Tipton	45 min
May 30, 8:18 PM EDT	Tornado Warning	IND	Boone, Hamilton	42 min
May 30, 8:33 PM EDT	Severe Thunderstorm Warning	IND	Clinton, Hamilton, Tipton	86 min
May 30, 8:40 PM EDT	Severe Thunderstorm Warning	IND	Greene, Sullivan, Vigo	20 min
May 30, 8:40 PM EDT	Tornado Warning	IND	Hamilton, Hancock, Madison, Marion	50 min
May 30, 8:46 PM EDT	Tornado Warning	IND	Clinton, Hamilton, Madison, Tipton	44 min
May 30, 8:53 PM EDT	Severe Thunderstorm Warning	IND	Fountain, Montgomery	37 min
May 30, 9:02 PM EDT	Severe Thunderstorm Warning	IND	Boone, Hamilton, Hendricks, Marion	43 min
May 30, 9:07 PM EDT	Severe Thunderstorm Warning	IND	Boone, Hendricks, Montgomery, Putnam	53 min
May 30, 9:23 PM EDT	Severe Thunderstorm Warning	IND	Hancock, Rush, Shelby	52 min
May 30, 9:26 PM EDT	Tornado Warning	IND	Hamilton, Henry, Madison	34 min
May 30, 9:33 PM EDT	Severe Thunderstorm Warning	IND	Hancock, Johnson, Marion, Shelby	42 min
May 30, 10:18 PM EDT	Areal Flood Warning	IND	Hendricks, Marion	2 hr
May 30, 10:38 PM EDT	Severe Thunderstorm Warning	IND	Johnson, Shelby	37 min
May 30, 11:10 PM EDT	Severe Thunderstorm Warning	IND	Bartholomew, Decatur, Rush, Shelby	34 min

Nearby

Severe Thunderstorm Warnings in Indiana, 2009 Every severe thunderstorm warning in 2009

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.