Alert archive / Indiana / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 66, NWS Northern Indiana

May 18, 2000LaPorte County, Starke County, Indiana

NWS Northern Indiana issued this severe thunderstorm warning at May 18, 2000, 7:04 PM CDT for LaPorte County, Starke County, Indiana. It was in force for 56 min. 4 reports came from inside the area while it was in force.

The area

The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties, with what was reported inside it.

The facts

Issued: May 18, 2000, 7:04 PM CDT (00:04 UTC)
Expired: May 18, 2000, 8:00 PM CDT
In force: 56 min
Issued by: NWS Northern Indiana
Area: Whole counties; the outline is the Mesonet’s reconstruction

Counties LaPorte County, IN, Starke County, IN

What was reported inside it

Time	Report	Where
May 18, 7:05 PM CDT	Tornado F0	Roselawn, IN
May 18, 7:05 PM CDT	Thunderstorm Wind 60 E	Kniman, IN
May 18, 7:12 PM CDT	Tornado F0	Hebron, IN
May 18, 7:50 PM CDT	Hail 0.75	Knox, 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 watch it was issued in

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

Issued	Product	Office	Lasted
May 18, 6:00 PM CDT	Tornado Watch	SPC	5 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 00:00Z, 0.1 hours before the alert went out and 200 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: 1192 J/kg
Mixed-layer CIN: -15 J/kg
Mixed-layer LCL: 1231 m above ground
0-6 km bulk shear: 53 kt
0-1 km storm-relative helicity: 218 m²/s²
0-3 km storm-relative helicity: 249 m²/s²
Significant tornado parameter: 1.3
Supercell composite: 3.2

Open this sounding in Storm Lab

The text

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

753 
WUUS53 KIWX 190007
SVRFWA
INC091-149-190100-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NORTHERN INDIANA
704 PM CDT THU MAY 18 2000

THE NATIONAL WEATHER SERVICE IN NORTHERN INDIANA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  LA PORTE COUNTY IN INDIANA
  STARKE COUNTY IN INDIANA

* UNTIL 800 PM CDT(800 PM EST)

* AT 705 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS ALONG A LINE EXTENDING FROM 21 MILES
  WEST OF MICHIGAN CITY TO 20 MILES WEST OF WANATAH TO 25 MILES      
  SOUTHWEST OF NORTH JUDSON...MOVING NORTHEAST AT 40 MPH.

* SOME LOCATIONS IN THE PATH OF THIS LINE OF SEVERE THUNDERSTORMS...
  NORTH JUDSON
  WESTVILLE
  MICHIGAN CITY
  WANATAH
  LA PORTE
  KINGSBURY
  HAMLET
  KNOX

A TORNADO WATCH REMAINS IN EFFECT. SEVERE STORMS CAN PRODUCE
TORNADOES WITH LITTLE OR NO ADVANCED WARNING. IF YOU ARE IN THE PATH
OF THIS STORM...SEEK SHELTER NOW

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

LAT...LON 4173 8732 4136 8733 4103 8739 4119 8651
          4174 8653 4177 8687

NNNN

SLL

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 Northern Indiana wrote its last area forecast discussion before this severe thunderstorm warning went out at May 18, 1:26 PM CDT, 5 hours 38 minutes earlier.

Area forecast discussion, May 18, 1:26 PM CDT, 5 hours 38 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORTHERN INDIANA
126 PM EST THU MAY 18 2000

FCST DILEMMA ARE POPS/TEMPS AND SVR/HEAVY RAIN THREAT THIS EVENING.

17Z SFC MAP SHOWING TRIPLE POINT LOW NR KCNC AND WARM FRONT SNAKING
EWD ALG A KOXV...KDVN...KVPZ...KDTX LINE. DEEPENING COLD POOL IN
ASSOC/W DVLPG CONVECTIVE CLUSTER OVR N IL/IN PUSHING BNDRY SWD THRU
N IL/IN ATTM. ADDITIONAL STORMS DVLPG INVOF TRIPLE POINT LOW SWD ALG
TRAILING COLD FRONT THRU NE MO. PROFILER/VWP ALL SHOWING STG LOW
LVL JET IN PLACE ACRS WARM SECTOR COINDICENT WITH APPROACHING MID
LVL SPEED MAX AND SHORTWAVE TROF IN MO.

12Z MODELS IN DECENT AGREEMENT WITH LG SCALE FTRS. ETA INITIALIZED
SFC LOW IN IA BETTER AND ITS 6HR QPF PICKS UP DVLPG CONV BEST.
MAIN PROBS THIS AFTERNOON/EVENING ARE CONT SVR THREAT AND GROWING
POTENTIAL FOR HEAVY RAIN. 12Z RAOBS/VIS IMAGERY CONT TO INDICATE
MAJORITY OF WARM SECTOR REMAINS CAPPED. WITH LOW LVL JET PROGGED TO
CONT BACKING AHD OF LOW AND TREMENDOUS LG SCALE ASCENT/CVRG ON NOSE
OF JET AND HIGH PWATS...SVR THREAT TO CONT INTO THIS EVENING
WITH FLOODING A BIGGER CONCERN OVERNIGHT. THIS IS SIMILAR TO WHAT HAS
OCCURRED OVR THE KGRR FA. ETA/NGM QPFS PRETTY GENEROUS WITH 1.5-2.0
INCHES PROGGED.

LOW CONTS TO FILL OVERNIGHT WITH 850MB CONV BNDRY PARKED OVR N HALF
OF CWA WHICH WILL CONT RAIN INTO TOMORROW AM. OTHERWISE CAA ON
BACKSIDE OF SYS AND CLDS WILL KEEP DIURNAL TEMP RISE AT A MINIMUM.
CONT CYCLONIC FLOW FRI NIGHT WILL KEEP CLDS IN UNTIL RIDGE AXIS
WORKS IN SAT AND THINGS FINALLY DRY OUT.

WILL WAIT UNTIL ISSUANCE TIME BEFORE MAKING DECISION ON NEED FOR FFA.

.IWX...TOR WATCH FOR IND COUNTIES UNTIL 21Z...SEVERE WATCH 5UNTIL 00Z
FOR REMAINDER OF FA.

TEH

In the hours before

Local storm report, May 18, 1:53 PM CDT, 5 hours 11 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORTHERN INDIANA
153 PM EST THU MAY 18 2000

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

0145 PM    1 N COLDWATER             MI   .75 INCH HAIL
05/18/00   BRANCH                         REPORTED BY STORM
                                          SPOTTER.

N

Local storm report, May 18, 1:56 PM CDT, 5 hours 8 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORTHERN INDIANA
156 PM EST THU MAY 18 2000

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

0145 PM    2 N COLDWATER             MI   2 INCH HAIL
05/18/00   BRANCH                         REPORTED BY STORM
                                          SPOTTER.

N

Local storm report, May 18, 2:23 PM CDT, 4 hours 41 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORTHERN INDIANA
223 PM EST THU MAY 18 2000

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

0220 PM    1 N SWAYZEE               IN   .88 INCH HAIL
05/18/00   GRANT                          REPORTED BY LAW
                                          ENFORCEMENT OFFICIAL.

N

Local storm report, May 18, 2:30 PM CDT, 4 hours 34 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORTHERN INDIANA
230 PM EST THU MAY 18 2000

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

0228 PM    GAS CITY                  IN   1 INCH HAIL
05/18/00   GRANT                          REPORTED BY EMERGENCY
                                          MANAGEMENT.

N

Local storm report, May 18, 3:01 PM CDT, 4 hours 3 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORTHERN INDIANA
301 PM EST THU MAY 18 2000

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

0140 PM    COLDWATER                 MI   .75 INCH HAIL
05/18/00   BRANCH                         REPORTED BY LAW
                                          ENFORCEMENT OFFICIAL.

0145 PM    1 N COLDWATER             MI   .75 INCH HAIL
05/18/00   BRANCH                         REPORTED BY STORM
                                          SPOTTER.

0145 PM    2 N COLDWATER             MI   2 INCH HAIL
05/18/00   BRANCH                         REPORTED BY STORM
                                          SPOTTER.

0220 PM    1 N SWAYZEE               IN   .88 INCH HAIL
05/18/00   GRANT                          REPORTED BY LAW
                                          ENFORCEMENT OFFICIAL.

0228 PM    GAS CITY      l            IN   1 INCH HAIL
05/18/00   GRANT                          REPORTED BY EMERGENCY
                                          MANAGEMENT.

N

Special weather statement, May 18, 3:24 PM CDT, 3 hours 40 minutes before

INZ003>009-012>018-020-022>027-032>034-190130-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTHERN INDIANA
324 PM EST THU MAY 18 2000

THE TORNADO WATCH FOR NORTHERN INDIANA HAS BEEN CANCELLED.

THUNDERSTORMS ARE EXPECTED TO REDEVELOP ONCE AGAIN THIS EVENING.
SOME OF THESE STORMS MAY BE SEVERE WITH LARGE HAIL AND DAMAGING
WINDS.

SKYWARN SPOTTER ACTIVATION MAY BE NEEDED AGAIN THIS EVENING.

STAY TUNED TO NOAA WEATHER RADI*O...LOCAL RADIO OR TELEVISION OR
CABLE TELEVISION FOR THE LATEST ON THIS SEVERE WEATHER THREAT.

TEH

The office that day

Everything else NWS Northern Indiana issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 18, 7:19 PM CDT	Severe Thunderstorm Warning	IWX	Pulaski	61 min
May 18, 7:49 PM CDT	Severe Thunderstorm Warning	IWX	Fulton, Marshall	61 min
May 18, 8:21 PM CDT	Severe Thunderstorm Warning	IWX	Kosciusko	39 min
May 18, 8:39 PM CDT	Severe Thunderstorm Warning	IWX	Miami, Wabash	51 min
May 18, 9:00 PM CDT	Severe Thunderstorm Warning	IWX	Huntington, Whitley	50 min
May 18, 9:31 PM CDT	Severe Thunderstorm Warning	IWX	Miami, Wabash	29 min
May 18, 9:40 PM CDT	Severe Thunderstorm Warning	IWX	Allen	30 min
May 18, 10:17 PM CDT	Severe Thunderstorm Warning	IWX	Wells	33 min

Nearby

Severe Thunderstorm Warnings in Indiana, 2000 Every severe thunderstorm warning in 2000

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.