Alert archive / Indiana / Severe Thunderstorm Warnings in 1999

Severe Thunderstorm Warning 22, NWS Indianapolis, IN

May 17, 1999Marion County, Indiana

NWS Indianapolis, IN issued this severe thunderstorm warning at May 17, 1999, 3:51 PM EST for Marion County, Indiana. It was in force for 39 min. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
May 17, 1999, 3:51 PM EST (20:51 UTC)
Expired
May 17, 1999, 4:30 PM EST
In force
39 min
Issued by
NWS Indianapolis, IN
Area
Whole counties

County Marion County, IN

The radar

The Indianapolis radar (KIND), 15 km from the middle of the area, began a volume at 20:55 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

TimeReportWhereRemark
May 17, 4:40 PM ESTHail 0.88Indianapolis, IN

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 12:00Z, 8.9 hours before the alert went out and 204 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 1999-05-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 253 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 1999-05-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 25 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
253 J/kg
Mixed-layer CIN
-138 J/kg
Mixed-layer LCL
1141 m above ground
0-6 km bulk shear
11 kt
0-1 km storm-relative helicity
25 m²/s²
0-3 km storm-relative helicity
73 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.

999 
WUUS1 KIND 172053 RRA
SVRIND
INC097-172130-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
351 PM EST MON MAY 17 1999

THE NATIONAL WEATHER SERVICE IN INDIANAPOLIS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  MARION COUNTY IN INDIANA
  THIS INCLUDES THE CITY OF INDIANAPOLIS

* UNTIL 430 PM EST

* AT 350 PM EST...THE PUBLIC REPORTED A SEVERE THUNDERSTORM 7 MILES
  SOUTH OF SPEEDWAY...OR ABOUT 10 MILES SOUTHWEST OF                 
  INDIANAPOLIS...  MOVING NORTHEAST AT 55 MPH. NICKEL SIZE HAIL WAS
  REPORTED AT 343 PM EST.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  SPEEDWAY AT 355 PM EST
  DOWNTOWN INDIANAPOLIS AT 410 PM EST
  CASTLETON AT 415 PM EST

IF SEVERE WEATHER APPROACHES YOUR AREA...GO INSIDE A STURDY SHELTER
AWAY FROM CREEK BEDS AND OTHER FLOOD-PRONE AREAS. REMEMBER...A SEVERE
THUNDERSTORM CAN PRODUCE LARGE DAMAGING HAIL...DAMAGING WINDS IN
EXCESS OF 55 MPH...DEADLY LIGHTNING...AND VERY HEAVY RAIN.

REPORT SEVERE WEATHER TO THE NEAREST LAW ENFORCEMENT AGENCY. THEY
WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST
OFFICE IN INDIANAPOLIS.

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.

In the hours before

Local storm report, May 17, 2:16 PM EST, 1 hour 35 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
216 PM EST MON MAY 17 1999

TIME(EST)  .....CITY LOCATION..... STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0213 PM    WINDFALL                  IN    1 INCH HAIL
05/17/99   TIPTON                          REPORTED BY SHERIFF
Local storm report, May 17, 2:24 PM EST, 1 hour 27 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
224 PM EST MON MAY 17 1999

TIME(EST)  .....CITY LOCATION..... STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0222 PM    WEST LIBERTY              IN    .75 INCH HAIL
05/17/99   HOWARD
Local storm report, May 17, 3:45 PM EST, 6 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
345 PM EST MON MAY 17 1999

TIME(EST)  .....CITY LOCATION..... STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0344 PM    PLAINFIELD                IN    .88 INCH HAIL
05/17/99   HENDRICKS                       REPORTED BY TRAINED
                                           SPOTTER

The office that day

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

IssuedProductOfficeCountiesLasted
May 17, 11:57 AM ESTSevere Thunderstorm WarningINDFountain, Montgomery33 min
May 17, 1:28 PM ESTSevere Thunderstorm WarningINDClinton, Tipton32 min
May 17, 4:03 PM ESTSevere Thunderstorm WarningINDMonroe, Owen27 min
May 17, 4:06 PM ESTSevere Thunderstorm WarningINDHamilton24 min
May 17, 4:18 PM ESTSevere Thunderstorm WarningINDMorgan32 min
May 17, 4:29 PM ESTSevere Thunderstorm WarningINDMonroe16 min
May 17, 4:36 PM ESTSevere Thunderstorm WarningINDLawrence24 min
May 17, 4:44 PM ESTSevere Thunderstorm WarningINDMadison31 min
May 17, 4:49 PM ESTSevere Thunderstorm WarningINDHendricks, Marion26 min
May 17, 4:52 PM ESTSevere Thunderstorm WarningINDMorgan23 min
May 17, 4:56 PM ESTSevere Thunderstorm WarningINDHamilton, Hancock34 min
May 17, 5:10 PM ESTSevere Thunderstorm WarningINDBrown, Monroe35 min
May 17, 5:14 PM ESTSevere Thunderstorm WarningINDHamilton, Marion31 min
May 17, 5:14 PM ESTSevere Thunderstorm WarningINDJohnson, Morgan31 min
May 17, 5:26 PM ESTSevere Thunderstorm WarningINDSullivan, Vigo34 min
May 17, 5:26 PM ESTSevere Thunderstorm WarningINDDaviess, Greene, Knox34 min
May 17, 5:41 PM ESTSevere Thunderstorm WarningINDLawrence, Monroe34 min
May 17, 5:41 PM ESTSevere Thunderstorm WarningINDBrown34 min
May 17, 5:44 PM ESTSevere Thunderstorm WarningINDHancock31 min
May 17, 5:59 PM ESTSevere Thunderstorm WarningINDDaviess, Greene, Martin46 min
May 17, 5:59 PM ESTSevere Thunderstorm WarningINDKnox, Sullivan46 min
May 17, 5:59 PM ESTSevere Thunderstorm WarningINDVigo46 min
May 17, 6:12 PM ESTSevere Thunderstorm WarningINDClay48 min
May 17, 6:19 PM ESTSevere Thunderstorm WarningINDBrown41 min
May 17, 6:23 PM ESTSevere Thunderstorm WarningINDOwen37 min
May 17, 6:30 PM ESTSevere Thunderstorm WarningINDLawrence, Monroe30 min
May 17, 6:40 PM ESTSevere Thunderstorm WarningINDMorgan, Putnam50 min
May 17, 6:51 PM ESTSevere Thunderstorm WarningINDBartholomew, Brown, Jackson39 min

Nearby

Severe Thunderstorm Warnings in Indiana, 1999Every severe thunderstorm warning in 1999

Sources

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