Alert archive / Minnesota / Severe Thunderstorm Warnings in 1996

Severe Thunderstorm Warning 124, NWS Twin Cities, MN

July 11, 1996Isanti County, Kanabec County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Jul 11, 1996, 11:22 PM CDT for Isanti County, Kanabec County, Minnesota. It was in force for 48 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
Jul 11, 1996, 11:22 PM CDT (04:22 UTC)
Expired
Jul 12, 1996, 12:10 AM CDT
In force
48 min
Issued by
NWS Twin Cities, MN
Area
Whole counties

Counties Isanti County, MN, Kanabec County, MN

The nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 4.4 hours before the alert went out and 103 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, Minneapolis, MN at 00:00Z on 1996-07-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 416 joules per kilogram.LCLLFCEL10008507005003002001001 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, Minneapolis, MN at 00:00Z on 1996-07-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 70 square meters per square second.1939587897117136Sfc1 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
416 J/kg
Mixed-layer CIN
-71 J/kg
Mixed-layer LCL
931 m above ground
0-6 km bulk shear
45 kt
0-1 km storm-relative helicity
70 m²/s²
0-3 km storm-relative helicity
35 m²/s²
Significant tornado parameter
0.1
Supercell composite
1.3

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KMSP 120424
SVRMSP
MNC059-065-120510-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
1122 PM CDT THU JUL 11 1996

* SEVERE THUNDERSTORM WARNING FOR
  NORTHERN ISANTI COUNTY - EAST CENTRAL MINNESOTA
  SOUTHERN KANABEC COUNTY - EAST CENTRAL MINNESOTA

* UNTIL 1210 AM CDT
 
* SOME LOCATIONS AFFECTED
    MORA
    CAMBRIDGE
    OGILIVE
    DAY

* AT AT 1123 PM CDT DOPPLER RADAR DETECTED A SEVERE THUNDERSTORM 15
  NORTHWEST OF CAMBRIDGE MOVING EAST AT 30 MILES AN HOUR.

THIS IS A DANGEROUS STORM...WITH LARGE HAIL. STAY INDOORS AWAY FROM
WINDOWS.

JVM
 
IF YOU ARE OUTDOORS...MOVE TO A PLACE OF SHELTER IMMEDIATELY IF A
STORM APPROACvHES.  MOTORISTS SHOULD REMAIN ALERT FOR REDUCED
VISIBILITIES DURING DOWNPOURS OF RAIN.  STREETS MAY FLOOD QUICKLY.

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 11, 7:44 PM CDT, 3 hours 38 minutes before
MNZ071-072-097-120100-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHANHASSEN/TWIN CITIES MN
744 PM CDT THU JUL 11 1996

THE FOLLOWING COUNTIES HAVE BEEN CLEARED FROM THE TORNADO WATCH...

LINCO
Special weather statement, Jul 11, 9:05 PM CDT, 2 hours 17 minutes before
MNZ006-009>011-017-018-026-120300-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHANHASSEN/TWIN CITIES MN
905 PM CDT THU JUL 11 1996

THE TORNADO WATCH HAS BEEN CANCELLED FOR THE FOLLOWING COUNTIES
IN NORTHERN MINNESOTA...

MAHNOMEN...CLEARWATER...LAKE OF WOODS...KOOCHICHING  NORTHERN ST.
LOUIS...ITASCA AND BELTRAMI.

SCATTERED SHOWERS AND THUNDERSTORMS ARE STILL POSSIBLE OVER THESE
AREAS TONIGHT. NO SEVERE WEATHER IS ANTICIPATED AT THIS T4IME.

JVM
Special weather statement, Jul 11, 9:53 PM CDT, 1 hour 29 minutes before
MNZ004>096-120400-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHANHASSEN/TWIN CITIES MN
953 PM CDT THU JUL 11 1996

THE TORNADO WATCH NUMBER 763 FOR A LARGE PART OF CENTRAL MINNESOTA
HAS BEEN DISCONTINUED WITH THE EXCEPTION OF THE FOLLOWING COUNTIES IN
NORTHEAST MINNESOTA...

SOUTHERN ST. LOUIS...PINE AND AITKIN COUNTIES.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 100 AM FOR THOSE COUNTIES.
TORNADO WATCH ALSO REMAINS IN EFFECT FOR SMALL PART OF EXTREME
NORTHEAST MINNESOTA UNTIL 1100 PM.

JVM

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 11, 8:00 PM CDTSevere Thunderstorm WarningMPXDouglas, Todd45 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 1996Every 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; the sounding from the Mesonet's radiosonde archive.