Alert archive / Indiana / Severe Thunderstorm Warnings in 1987

Severe Thunderstorm Warning 117, NWS Indianapolis, IN

July 26, 1987White County, Indiana

NWS Indianapolis, IN issued this severe thunderstorm warning at Jul 26, 1987, 2:36 PM EST for White County, Indiana. It was in force for 39 min.

The area

The counties it named.

The facts

Issued
Jul 26, 1987, 2:36 PM EST (19:36 UTC)
Expired
Jul 26, 1987, 3:15 PM EST
In force
39 min
Issued by
NWS Indianapolis, IN
Area
Whole counties

County White County, IN

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

The nearest sounding before it

Peoria Regional, IL (KPIA), launched 12:00Z, 7.6 hours before the alert went out and 231 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-pSkew-T log-p diagram, Peoria Regional, IL at 12:00Z on 1987-07-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Peoria Regional, IL at 12:00Z on 1987-07-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -10 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
NaN m above ground
0-6 km bulk shear
12 kt
0-1 km storm-relative helicity
-10 m²/s²
0-3 km storm-relative helicity
-8 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.2

Open this sounding in Storm Lab

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.

In the hours before

Special weather statement, Jul 26, 2:22 PM EST, 14 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
220 PM EST SUN JUL 26 1987

A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR MOST OF NORTH AND CENTRAL
INDIANA UNTIL 9PM EST.

THERE HAS BEEN NO SEVERE WEATHER REPORTED TO THE NATIONAL WEATHER
SERVICE.

DEVELOPING THUNDERSTORMS WERE OVER NORTHWEST INDIANA 25 MILES WEST AND
25 MILES NORTH OF LAFAYETTE. THESE THUNDERSTORMS WERE IN THE VICINITY
OF GOODLAND...MONTICELLO...LOGANSPORT AND PERU.

THE THUNDERSTORMS WILL MOVE INTO THE AREAS OF WILLIAMSPORT...LAFAYETTE
...KOKOMO AND MARION BETWEEN 230 AND 330 PM EST.

SOME OF THESE STORMS COULD PRODUCE STRONG GUSTY WINDS...TORRENTIAL
DOWNPOURS AND HAIL. REPORT SEVERE WEATHER TO YOUR L(OCAL LAW OFFICE.
KENYON

The office that day

Everything else NWS Indianapolis, IN issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 26, 4:15 PM ESTSevere Thunderstorm WarningINDMadison35 min
Jul 26, 5:50 PM ESTSevere Thunderstorm WarningINDJohnson, Shelby30 min
Jul 26, 6:27 PM ESTSevere Thunderstorm WarningINDBartholomew, Decatur33 min
Jul 26, 6:59 PM ESTSevere Thunderstorm WarningINDRandolph, Wayne31 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; the sounding from the Mesonet's radiosonde archive.