Alert archive / Indiana / Severe Thunderstorm Warnings in 1999

Severe Thunderstorm Warning 12, NWS Northern Indiana

April 10, 1999Saint Joseph County, Indiana

NWS Northern Indiana issued this severe thunderstorm warning at Apr 10, 1999, 7:40 PM EST for Saint Joseph County, Indiana. It was in force for 25 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Apr 10, 1999, 7:40 PM EST (00:40 UTC)
Expired: Apr 10, 1999, 8:05 PM EST
In force: 25 min
Issued by: NWS Northern Indiana
Area: Whole counties

County Saint Joseph County, IN

The nearest sounding before it

Lincoln, IL (KILX), launched 00:00Z, 0.7 hours before the alert went out and 254 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 916 m above ground
0-6 km bulk shear: 70 kt
0-1 km storm-relative helicity: 291 m²/s²
0-3 km storm-relative helicity: 348 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.0

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.

NWS Northern Indiana wrote its last area forecast discussion before this severe thunderstorm warning went out at Apr 10, 2:25 PM EST, 5 hours 15 minutes earlier.

Area forecast discussion, Apr 10, 2:25 PM EST, 5 hours 15 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORTHERN INDIANA
225 PM EST SAT APR 10 1999

SORRY FOR THE LATE AND BRIEF AFD...BEEN DEALING WITH CRS.

ETA AND NGM IN GOOD AGREEMENT THROUGH TOMORROW MORNING WITH BRINGING
LOW EASTWARD INTO NORTHERN OHIO. SEVERE THREAT LOOKS QUITE SMALL IN
IWX CWA...WILL NOT MENTION STRONG OR SEVERE IN IWX ZONES.
ELEVATED GENERAL THUNDER IS STILL A GOOD BET THOUGH.

LOW MOVES ON BY TOMORROW KEEPING US COOL AND SHOWERY. WRAP-AROUND
MOISTURE TOMORROW NIGHT WILL CONTINUE THE SCATTERED SHOWERS.
THICKNESSES AND 850 TEMPS INDICATE A FEW FLAKES OF SNOW COULD MIX IN
WITH THE SHOWERS LATE SUNDAY NIGHT BUT ITS NOT SIGNIFICANT ENOUGH TO
WARRANT DEPRESSING THE PUBLIC BY MENTIONING IT IN THE FORECAST.

MONDAY WILL CONTINUE COOL AND CLOUDY AS LOW PRESSURE SPINS TO OUR
NORTHEAST AND HIGH PRESSURE SETTLES DOWN INTO THE UPPER PLAINS.

PREFER COOLER FAN/FMR TEMPS OVER FWC.

SBN WC 040/051 033/052 033 12754
FWA WC 041/052 035/053 034 12754
AOH WC 043/053 037/055 036 12754

.IWX...NONE

REAUGH

In the hours before

Local storm report, Apr 10, 6:37 PM EST, 1 hour 3 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORTHERN INDIANA
637 PM EST SAT APR 10 1999

TIME(EST)  .....CITY LOCATION..... STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0633 PM    3 NW LA PORTE             IN    .75 INCH HAIL
04/10/99   LAPORTE                         SPOTTER REPORT

Local storm report, Apr 10, 6:37 PM EST, 1 hour 3 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORTHERN INDIANA
637 PM EST SAT APR 10 1999

TIME(EST)  .....CITY LOCATION..... STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0633 PM    3 NW LA PORTE             IN    .75 INCH HAIL
04/10/99   LAPORTE                         SPOTTER REPORT

Local storm report, Apr 10, 7:09 PM EST, 31 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORTHERN INDIANA
709 PM EST SAT APR 10 1999

TIME(EST)  .....CITY LOCATION..... STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0z705 PM    1 N SOUTH BEND            IN    1.25 INCH HAIL
04/10/99   ST.JOSEPH                       SPOTTER REPORT

Local storm report, Apr 10, 7:09 PM EST, 31 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORTHERN INDIANA
709 PM EST SAT APR 10 1999

TIME(EST)  .....CITY LOCATION..... STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0z705 PM    1 N SOUTH BEND            IN    1.25 INCH HAIL
04/10/99   ST.JOSEPH                       SPOTTER REPORT

The office that day

Everything else NWS Northern Indiana issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 10, 7:01 PM EST	Severe Thunderstorm Warning	IWX	Starke	59 min
Apr 10, 7:14 PM EST	Severe Thunderstorm Warning	IWX	Pulaski	61 min
Apr 10, 7:23 PM EST	Tornado Warning	IWX	Marshall	67 min
Apr 10, 7:25 PM EST	Severe Thunderstorm Warning	IWX	Elkhart	65 min
Apr 10, 7:45 PM EST	Severe Thunderstorm Warning	IWX	Fulton	65 min
Apr 10, 8:01 PM EST	Severe Thunderstorm Warning	IWX	Kosciusko	64 min
Apr 10, 8:42 PM EST	Severe Thunderstorm Warning	IWX	DeKalb, Steuben	63 min
Apr 10, 8:42 PM EST	Severe Thunderstorm Warning	IWX	Whitley	63 min
Apr 10, 8:56 PM EST	Severe Thunderstorm Warning	IWX	Allen	64 min
Apr 11, 12:05 AM EST	Severe Thunderstorm Warning	IWX	Miami	35 min
Apr 10, 9:04 PM EST	Severe Thunderstorm Warning	IWX	Defiance, Williams	66 min
Apr 10, 9:12 PM EST	Severe Thunderstorm Warning	IWX	Paulding	63 min

Nearby

Severe Thunderstorm Warnings in Indiana, 1999 Every severe thunderstorm warning in 1999

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.