Alert archive / Indiana / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 131, NWS Northern Indiana
NWS Northern Indiana issued this severe thunderstorm warning at Jul 3, 1998, 8:45 PM CDT for LaPorte County, Indiana. It was in force for 65 min. 2 reports 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
- Jul 3, 1998, 8:45 PM CDT (01:45 UTC)
- Expired
- Jul 3, 1998, 9:50 PM CDT
- In force
- 65 min
- Issued by
- NWS Northern Indiana
- Area
- Whole counties
County LaPorte County, IN
The radar
The Northern Indiana radar (KIWX), 89 km from the middle of the area, began a volume at 01:45 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 |
|---|---|---|---|
| Jul 3, 9:41 PM CDT | Thunderstorm Wind 50 | La Porte, IN | WIND DAMAGE - POWER LINES DOWN. |
| Jul 3, 9:42 PM CDT | Thunderstorm Wind 50 | South Center, IN | POWER LINES DOWN. |
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
Lincoln, IL (KILX), launched 00:00Z, 1.8 hours before the alert went out and 220 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.
- Mixed-layer CAPE
- 1525 J/kg
- Mixed-layer CIN
- -73 J/kg
- Mixed-layer LCL
- 1014 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 26 m²/s²
- 0-3 km storm-relative helicity
- 113 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 0.6
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
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 Jul 3, 7:57 PM CDT, 48 minutes earlier.
Area forecast discussion, Jul 3, 7:57 PM CDT, 48 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE NORTHERN INDIANA 757 PM EST FRI JUL 3 1998 00Z MESO ANALYSIS SHOWING CURRENT CONVECTION ACRS N IL AND S LM IN RESPONSE TO SW ENERGY INVOF NE IA SW WI AND SFC COLD FRONT. LOOKS LIKE FAIR PUSH WITH FRONT GIVEN LARGE 3HR PRESSURE FALLS. BEST MOISTURE CONVERGENCE AND HIGHER THETA-E NOW WORKING INTO NW IN. ADAS PUTS FRONT FROM NORTH OF ORD TO OMA WITH BEST INSTABILITY SPREADING EASTWARD. 00Z RAOBS FROM ILX AND DVN INDICATE CAPES 2-3K J/KG. HEAVY RAIN A GOOD BET BASED ON DVN DEEP LYR MOISTURE WITH PW OVER 2 INCHES. SVR WX THREAT WOULD SEEM SLIGHT GIVEN UNIMPRESSIVE SHEAR VALUES BUT MODIFIED NSHARP DOES SHOW MUCH HIGHER SREH VALUES WITH SOUTHEASTWARD MOVING STORMS. THIS INDEED THE CASE WITH CURRENT SEVERE CONVECTIVE CLUSTER NEAR ORD. EXTRAPOLATION OF CURRENT LEADING PRECIP EDGE WOULD PUT IT INTO NW OH COUNTIES CLOSE TO MIDNIGHT. CURRENT FORECAST LOOK TO HAVE PRETTY GOOD HANDLE ON THINGS OTHERWISE. .IWX...NONE. TEH
The office that day
Everything else NWS Northern Indiana issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 3, 9:08 PM CDT | Tornado Warning | IWX | Saint Joseph | 52 min |
| Jul 3, 9:21 PM CDT | Tornado Warning | IWX | LaPorte, Marshall, Starke | 49 min |
| Jul 3, 9:35 PM CDT | Tornado Warning | IWX | Elkhart | 50 min |
| Jul 3, 9:54 PM CDT | Tornado Warning | IWX | Kosciusko | 66 min |
| Jul 3, 10:25 PM CDT | Severe Thunderstorm Warning | IWX | LaGrange, Noble | 65 min |
| Jul 3, 10:29 PM CDT | Severe Thunderstorm Warning | IWX | Elkhart | 21 min |
| Jul 3, 10:49 PM CDT | Tornado Warning | IWX | Wabash | 46 min |
| Jul 3, 10:51 PM CDT | Tornado Warning | IWX | Fulton, Miami | 49 min |
| Jul 3, 11:00 PM CDT | Tornado Warning | IWX | Huntington, Whitley | 50 min |
| Jul 3, 11:27 PM CDT | Tornado Warning | IWX | Cass, Miami | 48 min |
| Jul 3, 11:35 PM CDT | Tornado Warning | IWX | Wabash | 50 min |
| Jul 3, 11:50 PM CDT | Tornado Warning | IWX | Huntington | 35 min |
| Jul 3, 11:57 PM CDT | Tornado Warning | IWX | Miami | 48 min |
| Jul 4, 12:25 AM CDT | Tornado Warning | IWX | Grant | 65 min |
| Jul 4, 1:21 AM CDT | Flash Flood Warning | IWX | Cass, Fulton, Miami | 3 hr |
| Jul 4, 4:34 AM CDT | Flash Flood Warning | IWX | Cass, Fulton, Miami | 2 hr |
| Jul 4, 6:35 AM CDT | Flash Flood Warning | IWX | Cass, Fulton, Miami | |
| Jul 3, 8:49 PM CDT | Tornado Warning | IWX | Berrien | 46 min |
| Jul 3, 10:19 PM CDT | Severe Thunderstorm Warning | IWX | Saint Joseph | 46 min |
Nearby
Severe Thunderstorm Warnings in Indiana, 1998Every severe thunderstorm warning in 1998
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.