Alert archive / Indiana / Severe Thunderstorm Warnings in 1987
Severe Thunderstorm Warning 9, NWS Northern Indiana
NWS Northern Indiana issued this severe thunderstorm warning at May 30, 1987, 5:24 PM EST for Whitley County, Indiana. It was in force for 36 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
- May 30, 1987, 5:24 PM EST (22:24 UTC)
- Expired
- May 30, 1987, 6:00 PM EST
- In force
- 36 min
- Issued by
- NWS Northern Indiana
- Area
- Whole counties
County Whitley County, IN
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| May 30, 5:26 PM EST | Thunderstorm Wind 0 | Whitley, IN | |
| May 30, 5:45 PM EST | Thunderstorm Wind 0 | Whitley, 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. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.
The nearest sounding before it
Dayton/James M C, OH (KDAY), launched 12:00Z, 10.4 hours before the alert went out and 176 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- NaN m above ground
- 0-6 km bulk shear
- 8 kt
- 0-1 km storm-relative helicity
- -55 m²/s²
- 0-3 km storm-relative helicity
- -11 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KFWA 302224 SVRFWA INC113-033-183-302300- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE FORT WAYNE IN 524 PM EST SAT MAY 30 1987 THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 600 PM EST FOR PEOPLE IN THE FOLLOWING COUNTIES OF NORTHEAST INDIANA...SOUTHERN NOBLE...SOUTHERN DEKALB AND NORTHERN WHITLEY AT 519 PM EST RADAR INDICATED A LINE OF SEVERE THUNDERSTORMS EXTENDING FROM 15 MILES WEST OF FORT WAYNE INDIANA TO 15 MILES NORTH OF FORT WAYNE INDIANA MOVING TOWARD THE NORTHEAST AT 25 MPH. THESE STORMS CAN ALSO PRODUCE A SMALL TORNADO WITH LITTLE OR NO ADVANCE WARNING. A SEVERE THUNDERSTORM PRODUCES DAM<AGING WINDS IN EXCESS OF 60 MILES AN HOUR...LARGE HAIL AND FREQUENT LIGHTNING. MARSHALL
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
Special weather statement, May 30, 2:14 PM EST, 3 hours 10 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SOUTH BEND IN 215 PM EST SAT MAY 30 1987 ...SEVERE THUNDERSTORM WATCH IN EFFECT UNTIL 7 PM EST FOR NORTHERN INDIANA...SOUTHERN LAKE MICHIGAN...AND EXTREME SOUTHWEST LOWER MICHIGAN... AT 2 05 PM EST...THUNDERSTORMS PRODUCING VERY HEAVY RAINFALL AND DANGEROUS LIGHTNING EXTENDED FROM SOUTHERN LAKE MICHIGAN...SOUTH OVER WESTERN INDIANA AND EASTERN ILLINOIS TO THE SOUTH OF LAFAYETTE INDIANA AND DANVILLE ILLINOIS. ANOTHER HEVY THUNDERSTORM WAS OVER SOUTHERN FULTON COUNTY INDIANA NEAR ROCHESTER...40 MILES SOUTH OF SOUTH BEND. A SMALL THUNDERHOWER WAS OVER SOUTHWEST LOWER MICHIGAN..JUST NORTH OF CASSOPOLIS...20 MILES NORTHEST OF SOUTH BEND. THE THUNDERSTORMS WERE MOVING NORTHEAST AROUND 25 MPH. MOWERY
Special weather statement, May 30, 2:52 PM EST, 2 hours 32 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SOUTH BEND IN 250 PM EST SAT MAY 30 1987 ...SEVERE THUNDERSTORM WATCH IN EFFECT UNTIL 7PM EST FOR NORTHERN INDIANA...SOUTHERN LAKE MICHIGAN...AND SOUTHWEST LOWER MICHIGAN... AT 240 PM EST...THUNDERSTORMS PRODUCING VERY HEAVY RAIN AND DANGEROUS LIGHTNING EXTENDED FROM SOUTHERN LAKE MICHIGAN...SOUTH OVER WESTERN INDIANA AND EASTERN ILLINOIS...DAMAGING THUNDERSTORM WINDS AND LARGE HAIL MAY ALSO ACCOMPANY THESE STORMS. ANOTHER VERY HEAVY THUNDERSTORM WAS OVER SOUTHEASTERN MARSHALL COUNTY OF NORTHCENTRAL INDIANA HEAVY THUNDERSTORMS WERE ALSO OVER NORTH CENTRAL CASS COUNTY OF SOUTH- WEST LOWER MICHIGAN. THE THUNDERSTORMS WERE MOVING TOWARDS THE NORTHEAST AT 25 MILES AN HOUR. SAVAGE
Special weather statement, May 30, 3:34 PM EST, 1 hour 50 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SOUTH BEND IN 330 PM EST SAT MAY 30 1987 ...SEVERE THUNDERSTORM WATCH IN EFFECT UNTIL 7 PM EST FOR NORTHERN INDIANA...SOUTHWEST LOWER MICHIGAN AND SOUTHERN LAKE MICHIGAN... AT 325 PM EST...THUNDERSTORMS PRODUCING VERY HEAVY DOWNPOURS OF RAIN ...DANGEROUS LIGHTNING...STRONG GUSTY WINDS TO 35 TO 40 MPH AND POSSIBLY SOME SMALL HAIL WERE OCCURRING OVER NORTHERN INDIANA FROM NEAR KNOX...25 MILES SOUTH SOUTHWEST OF SOUTH BEND...TO 15 MILES EAST OF PLYMOUTH...20 MILES SOUTH SOUTHEST OF SOUTH BEND...AND NEAR MICHIGAN CITY INDIANA..20 MILES WEST OF SOUTH BEND. OTHER HEAVY THUNDERSTORMS EXTENDED FROM NEAR NILES MICHIGAN..8 MILES NORTH NORTHEAST OF SOUTH BEND TO DECATUR MICHIGAN...30 MILES NORTHEAST OF SOUTH BEND. FLOODING OF SMALL STREAMS...INTERSECTIONS AND UNDERPASSES WILL LIKELY OCCUR WITH THE HEAVY THUNDERSTORMS. < THE THUNDERSTORMS WERE MOVING NORTHEAST AROUND 25 MPH. NO REPORTS OF DAMAGE HAVE BEEN RECEIVED AT THE NATIONAL WEATHER SERVICE AS OF 3 30 PM EST. MOWERY
The office that day
Everything else NWS Northern Indiana issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 30, 4:38 PM EST | Severe Thunderstorm Warning | IWX | Huntington, Whitley | 37 min |
| May 30, 5:24 PM EST | Severe Thunderstorm Warning | IWX | DeKalb, Noble | 36 min |
Nearby
Severe Thunderstorm Warnings in Indiana, 1987Every severe thunderstorm warning in 1987
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.