Alert archive / Indiana / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 172, NWS Northern Indiana
NWS Northern Indiana issued this severe thunderstorm warning at Jul 21, 1998, 7:19 PM CDT for LaPorte County, Indiana. It was in force for 31 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
- Jul 21, 1998, 7:19 PM CDT (00:19 UTC)
- Expired
- Jul 21, 1998, 7:50 PM CDT
- In force
- 31 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 00:22 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 21, 7:30 PM CDT | Thunderstorm Wind 52 | La Porte, IN | NUMEROUS TREES DOWN ACROSS COUNTY. |
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, 0.3 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
- 3455 J/kg
- Mixed-layer CIN
- -58 J/kg
- Mixed-layer LCL
- 1569 m above ground
- 0-6 km bulk shear
- 12 kt
- 0-1 km storm-relative helicity
- 30 m²/s²
- 0-3 km storm-relative helicity
- 59 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 21, 1:25 PM CDT, 5 hours 54 minutes earlier.
Area forecast discussion, Jul 21, 1:25 PM CDT, 5 hours 54 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE NORTHERN INDIANA 125 PM EST TUE JUL 21 1998 FORECAST CONCERNS ARE PRECIP CHANCES AND SEVERE WEATHER THREAT THROUGH THE FORECAST PERIOD. KLOT RADAR CURRENTLY SHOWING A SLOWLY INTENSIFYING LINE OF STORMS ACROSS NORTHERN ILLINOIS AND SOUTHERN WISCONSIN. KLOT RADAR SHOWING WEAK REFLECTIVITIES INCREASING ALONG THE SOUTHERN END OF THE LINE.. INDICATING ADDITIONAL DEVELOPMENT. WOULD LIKE MENTION OF SCATTERED STORMS AND SEVERE WORDING FOR ENTIRE AREA THIS EVENING. HIGH CAPE VALUES ACROSS THE AREA AT TIME.. AND KIWX VWP SHOWING PROFILE FAVORABLE FOR DAMAGING WINDS. ETA/NGM MODELS BECOMING A BIT MORE CONSISTENT.. THOUGH HAVE SOME RESERVATIONS STILL WITH DETAILS. BOTH MODELS INDICATE FRONTAL BOUNDARY CURRENTLY TO THE NORTH BECOMING STATIONARY ACROSS NORTHERN INDIANA. MOISTURE POOLING ALONG THE FRONT AS PW VALUES INCREASE TO NEARLY 2 INCHES BY TOMORROW AFTERNOON. FRONTOGENESIS PROGS... LOW LEVEL MOISTURE FIELDS... AND MID LEVEL THICKNESSES INDICATE SERIES OF CONVECTIVE SYSTEMS PLAGUING OUR AREA THROUGH 48 HOURS. MCS DEVELOPMENT LIKELY LATER TONIGHT OUT TO THE WEST.. WITH ACTIVITY WORKING INTO AREA AROUND DAYBREAK. DEVELOPMENT ALSO POSSIBLE TOMORROW AFTERNOON AS AMS BECOMES UNSTABLE ONCE AGAIN. WOULD RECOMMEND LIKELY POPS TONIGHT/TOMORROW.. WITH GOOD CHANCE POPS IN LATER PERIODS. HEAVY RAINFALL MAY BECOME A PROBLEM TOMORROW OR TOMORROW NIGHT... BUT THIS CAN WAIT UNTIL LATER FORECASTS TO BE ADDRESSED. RECOMMEND TEMPS TOMORROW A BIT HIGHER THAN FWC/FAN GUIDANCE... AS MOST OF CWA SHOULD BE ALONG OR SOUTH OF SURFACE FRONT. GUIDANCE TEMPS FOR OTHER PERIODS SHOULD BE FINE. SBN 072/089 069/080 060 09665 FWA 073/090 070/083 062 09565 AOH 074/090 072/084 062 09455 .IWX...NONE. MARGRAF!
In the hours before
Local storm report, Jul 21, 5:07 PM CDT, 2 hours 12 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORTHERN INDIANA
507 PM EST TUE JUL 21 1998
TIME(EST) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0425 PM COLDWATER MI WIND DAMAGE
07/21/98 BRANCH TREES DOWN
0435 PM 5 ESE COLDWATER MI .75 INCH HAIL
07/21/98 BRANCH HAM REPORT
0435 PM LITCHFIELD MI WIND DAMAGE
07/21/98 HILLSDALE TREES AND POWER LINES
DOWNLocal storm report, Jul 21, 5:07 PM CDT, 2 hours 12 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORTHERN INDIANA
507 PM EST TUE JUL 21 1998
TIME(EST) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0425 PM COLDWATER MI WIND DAMAGE
07/21/98 BRANCH TREES DOWN
0435 PM 5 ESE COLDWATER MI .75 INCH HAIL
07/21/98 BRANCH HAM REPORT
0435 PM LITCHFIELD MI WIND DAMAGE
07/21/98 HILLSDALE TREES AND POWER LINES
DOWNLocal storm report, Jul 21, 6:38 PM CDT, 41 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORTHERN INDIANA
638 PM EST TUE JUL 21 1998
TIME(EST) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0636 PM CENTREVILLE MI 1.75 INCH HAIL
07/21/98 ST.JOSEPHLocal storm report, Jul 21, 6:38 PM CDT, 41 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORTHERN INDIANA
638 PM EST TUE JUL 21 1998
TIME(EST) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0636 PM CENTREVILLE MI 1.75 INCH HAIL
07/21/98 ST.JOSEPHLocal storm report, Jul 21, 6:39 PM CDT, 40 minutes before
PRELIMINARY LOCAL STORM REPORT...CORRECTION...
NATIONAL WEATHER SERVICE NORTHERN INDIANA
639 PM EST TUE JUL 21 1998
TIME(EST) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0636 PM COLDWATER MI 1.75 INCH HAIL
07/21/98 BRANCHLocal storm report, Jul 21, 6:39 PM CDT, 40 minutes before
PRELIMINARY LOCAL STORM REPORT...CORRECTION...
NATIONAL WEATHER SERVICE NORTHERN INDIANA
639 PM EST TUE JUL 21 1998
TIME(EST) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0636 PM COLDWATER MI 1.75 INCH HAIL
07/21/98 BRANCHThe office that day
Everything else NWS Northern Indiana issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 21, 7:44 PM CDT | Severe Thunderstorm Warning | IWX | Elkhart, Saint Joseph | 61 min |
| Jul 21, 8:00 PM CDT | Severe Thunderstorm Warning | IWX | LaGrange, Steuben | 60 min |
| Jul 21, 8:13 PM CDT | Severe Thunderstorm Warning | IWX | Kosciusko, Marshall, Noble | 62 min |
| Jul 21, 8:23 PM CDT | Severe Thunderstorm Warning | IWX | Allen, Whitley | 62 min |
| Jul 21, 8:23 PM CDT | Severe Thunderstorm Warning | IWX | DeKalb | 62 min |
| Jul 21, 8:52 PM CDT | Severe Thunderstorm Warning | IWX | Huntington, Wabash | 48 min |
| Jul 21, 9:01 PM CDT | Severe Thunderstorm Warning | IWX | Cass, Fulton, Miami | 59 min |
| Jul 21, 9:08 PM CDT | Severe Thunderstorm Warning | IWX | Adams | 62 min |
| Jul 21, 9:08 PM CDT | Severe Thunderstorm Warning | IWX | Wells | 62 min |
| Jul 21, 9:13 PM CDT | Severe Thunderstorm Warning | IWX | Kosciusko | 32 min |
| Jul 21, 9:27 PM CDT | Severe Thunderstorm Warning | IWX | Pulaski, White | 48 min |
| Jul 21, 9:35 PM CDT | Severe Thunderstorm Warning | IWX | Allen, Whitley | 45 min |
| Jul 21, 9:41 PM CDT | Severe Thunderstorm Warning | IWX | Huntington, Wabash | 64 min |
| Jul 21, 9:56 PM CDT | Severe Thunderstorm Warning | IWX | Cass, Miami | 49 min |
| Jul 21, 10:05 PM CDT | Severe Thunderstorm Warning | IWX | Elkhart, LaGrange, Noble | 50 min |
| Jul 21, 10:16 PM CDT | Severe Thunderstorm Warning | IWX | Adams, Wells | 64 min |
| Jul 21, 10:29 PM CDT | Severe Thunderstorm Warning | IWX | Blackford, Grant | 61 min |
| Jul 21, 10:29 PM CDT | Severe Thunderstorm Warning | IWX | Jay | 61 min |
| Jul 21, 10:44 PM CDT | Severe Thunderstorm Warning | IWX | Huntington, Miami, Wabash | 46 min |
| Jul 21, 11:54 PM CDT | Flash Flood Warning | IWX | Allen, Huntington, Wells, Whitley | 3 hr |
| Jul 22, 12:14 AM CDT | Flash Flood Warning | IWX | Kosciusko, Wabash | 3 hr |
| Jul 22, 1:32 AM CDT | Flash Flood Warning | IWX | Fulton, Miami | 103 min |
| Jul 22, 1:32 AM CDT | Flash Flood Warning | IWX | Adams | 103 min |
| Jul 22, 3:00 AM CDT | Flash Flood Warning | IWX | Huntington, Wabash, Wells | 4 hr |
| Jul 22, 3:00 AM CDT | Flash Flood Warning | IWX | Adams | 4 hr |
| Jul 22, 3:00 AM CDT | Flash Flood Warning | IWX | Cass, Fulton, Miami, Pulaski, White | 4 hr |
| Jul 22, 3:31 AM CDT | Flash Flood Warning | IWX | Allen | 3 hr |
| Jul 21, 8:30 PM CDT | Severe Thunderstorm Warning | IWX | Defiance, Henry, Williams | 45 min |
| Jul 21, 8:30 PM CDT | Severe Thunderstorm Warning | IWX | Fulton | 45 min |
| Jul 21, 8:34 PM CDT | Severe Thunderstorm Warning | IWX | Paulding, Putnam | 61 min |
| Jul 21, 9:18 PM CDT | Severe Thunderstorm Warning | IWX | Defiance, Henry | 47 min |
| Jul 21, 9:35 PM CDT | Severe Thunderstorm Warning | IWX | Paulding, Putnam | 45 min |
| Jul 21, 10:16 PM CDT | Severe Thunderstorm Warning | IWX | Allen | 64 min |
| Jul 21, 11:54 PM CDT | Flash Flood Warning | IWX | Allen, Van Wert | 3 hr |
| Jul 21, 7:03 PM CDT | Severe Thunderstorm Warning | IWX | Cass | 47 min |
| Jul 21, 7:07 PM CDT | Severe Thunderstorm Warning | IWX | Branch | 63 min |
| Jul 21, 7:25 PM CDT | Severe Thunderstorm Warning | IWX | Hillsdale | 50 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.