Alert archive / Indiana / Severe Thunderstorm Warnings in 1987
Severe Thunderstorm Warning 21, NWS Indianapolis, IN
NWS Indianapolis, IN issued this severe thunderstorm warning at May 30, 1987, 4:22 PM EST for Elkhart County, Saint Joseph County, Indiana; Cass County, Michigan. It was in force for 38 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, 4:22 PM EST (21:22 UTC)
- Expired
- May 30, 1987, 5:00 PM EST
- In force
- 38 min
- Issued by
- NWS Indianapolis, IN
- Area
- Whole counties
Counties Elkhart County, IN, Saint Joseph County, IN, Cass County, MI
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, 4:26 PM EST | Hail 1 | Cass, MI | |
| May 30, 4:45 PM EST | Thunderstorm Wind 52 | Cass, MI |
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
Detroit, MI (KFNT), launched 12:00Z, 9.4 hours before the alert went out and 243 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
- 1153 J/kg
- Mixed-layer CIN
- -78 J/kg
- Mixed-layer LCL
- 1197 m above ground
- 0-6 km bulk shear
- 13 kt
- 0-1 km storm-relative helicity
- -34 m²/s²
- 0-3 km storm-relative helicity
- 15 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 KSBN 302124 SVRSBN INC141-039-MIC027-302200- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE SOUTH BEND IN 422 PM EST SAT MAY 30 1987 THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 500 PM EST FOR PEOPLE IN THE FOLLOWING COUNTIES OF NORTH CENTRAL INDIANA...NORTHERN ST JOSEPH AND NORTHERN ELKHART SOUTHWEST MICHIGAN...CASS AT 415PM EST RADAR INDICATED SEVERE THUNDERSTORMS IN NORTHERN CASS COUNTY OF SOUTHWEST LOWER MICHIGAN AND WESTERN ST JOSEPH COUNTY OF NORTH CENTRAL INDIANA. THIS STORM IS CAUSING INTENSE LIGHTNING AND STRONG GUSTY WIND. YOU SHOULD SEEK INDOOR SHELTER AND STAY AWAY FROM PLUMBING OR APPLIANCES. IF YOU ARE IN THE PATH OF THIS SEVERE THUNDERSTORM GET INTO A REIN- FORCED SHELTER AND PREPARE FOR STRONG DAMAGING WIND...LARGE HAIL... VERY HEAVY RAIN AND LIGHTNING. THIS SLOW MOVING THUNDERSTORM MAY CAUSE FLOODING OF SMALL STREAMS AND UNDERPASSES. REMEMBER THESE STORMS CAN AND OCCASIONALLY TO PRODUCE A TORNADO WITH LITTLE OR NO ADVANCE WARNING. SAVAGE
The office that day
Everything else NWS Indianapolis, IN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 29, 7:17 PM EST | Severe Thunderstorm Warning | IND | Hendricks | 28 min |
| May 29, 7:42 PM EST | Severe Thunderstorm Warning | IND | Boone | 33 min |
| May 30, 3:42 PM EST | Severe Thunderstorm Warning | IND | Hancock, Madison | 48 min |
| May 30, 3:51 PM EST | Severe Thunderstorm Warning | IND | Decatur | 59 min |
| May 30, 3:58 PM EST | Severe Thunderstorm Warning | IND | Marshall, Saint Joseph | 47 min |
| May 30, 4:06 PM EST | Tornado Warning | IND | Rush | 44 min |
| May 30, 4:34 PM EST | Severe Thunderstorm Warning | IND | Henry, Wayne | 46 min |
Nearby
Severe Thunderstorm Warnings in Indiana, 1987Severe Thunderstorm Warnings in Michigan, 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.