Alert archive / Minnesota / Severe Thunderstorm Warnings in 1996

Severe Thunderstorm Warning 108, NWS Twin Cities, MN

June 29, 1996Steele County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Jun 29, 1996, 3:45 PM CDT for Steele County, Minnesota. It was in force for 45 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: Jun 29, 1996, 3:45 PM CDT (20:45 UTC)
Expired: Jun 29, 1996, 4:30 PM CDT
In force: 45 min
Issued by: NWS Twin Cities, MN
Area: Whole counties

County Steele County, MN

The radar

The Minneapolis radar (KMPX), 96 km from the middle of the area, began a volume at 20:47 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
Jun 29, 3:50 PM CDT	Hail 0.75	Merton, MN

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

Minneapolis, MN (KMPX), launched 12:00Z, 8.8 hours before the alert went out and 97 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: 734 J/kg
Mixed-layer CIN: -155 J/kg
Mixed-layer LCL: 1273 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: 185 m²/s²
0-3 km storm-relative helicity: 193 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 3.2

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KMSP 292046
SVRMSP
MNC147-292130-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
345 PM CDT SAT JUN 29 1996

* SEVERE THUNDERSTORM WARNING FOR
  NORTHERN STEELE COUNTY - SOUTH CENTRAL MINNESOTA

* UNTIL 430 PM CDT
 
* SOME LOCATIONS AFFECTED
    MEDFORD
    OWATONNA
    CLINTON FALLS
    MERTON

* AT 345 PM CDT DOPPLER RADAR DETECTED A SEVERE THUNDERSTORM JUST
  NORTH OF OWATONNA MOVINGv EAST AT 35 MPH.

THIS IS A DANGEROUS STORM...WITH DAMAGING WINDS. STAY INDOORS AWAY
FROM WINDOWS.

HOWIESON

The office that day

Everything else NWS Twin Cities, MN issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 29, 2:16 PM CDT	Severe Thunderstorm Warning	MPX	Dakota	29 min
Jun 29, 2:30 PM CDT	Severe Thunderstorm Warning	MPX	Goodhue	65 min
Jun 29, 3:53 PM CDT	Severe Thunderstorm Warning	MPX	Dodge	37 min
Jun 29, 4:03 PM CDT	Severe Thunderstorm Warning	MPX	Stevens	27 min
Jun 29, 4:15 PM CDT	Tornado Warning	MPX	Dodge, Olmsted	30 min
Jun 29, 4:48 PM CDT	Severe Thunderstorm Warning	MPX	Douglas, Todd	42 min
Jun 29, 5:03 PM CDT	Severe Thunderstorm Warning	MPX	Stearns	57 min
Jun 29, 5:19 PM CDT	Severe Thunderstorm Warning	MPX	Fillmore, Houston	41 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 1996 Every severe thunderstorm warning in 1996

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.