Alert archive / Minnesota / Tornado Warnings in 1996

Tornado Warning 22, NWS Twin Cities, MN

July 21, 1996Isanti County, Mille Lacs County, Minnesota

NWS Twin Cities, MN issued this tornado warning at Jul 21, 1996, 10:57 PM CDT for Isanti County, Mille Lacs County, Minnesota. It was in force for 23 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: Jul 21, 1996, 10:57 PM CDT (03:57 UTC)
Expired: Jul 21, 1996, 11:20 PM CDT
In force: 23 min
Issued by: NWS Twin Cities, MN
Area: Whole counties

Counties Isanti County, MN, Mille Lacs County, MN

What was reported inside it

Time	Report	Where	Remark
Jul 21, 10:57 PM CDT	Hail 0.75	Long Siding, 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 00:00Z, 4.0 hours before the alert went out and 101 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: 368 J/kg
Mixed-layer CIN: -40 J/kg
Mixed-layer LCL: 1193 m above ground
0-6 km bulk shear: 47 kt
0-1 km storm-relative helicity: 24 m²/s²
0-3 km storm-relative helicity: 42 m²/s²
Significant tornado parameter: -0.0
Supercell composite: -0.2

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KMSP 220400
TORMSP
MNC059-095-220420-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
1057 PM CDT SUN JUL 21 1996

* TORNADO WARNING FOR
  WESTERN ISANTI COUNTY - EAST CENTRAL MINNESOTA
  SOUTHERN MILLE LACS COUNTY - CENTRAL MINNESOTA

* UNTIL 1120 PM CDT
 
* SOME LOCATIONS AFFECTED
    MILACA
    LONG SIDING
    DALVO
    PRINCETON

* AT 1054 PM CDT DOPPLER RADAR DETECTED A POSSIBLE TORNADO NEAR
  LONGF SIDING ABOUT  25 MILES EAST OF ST CLOUD. IT WAS MOVING EAST
  SOUTHEAST AT 25 MILES AN  HOUR..


IF YOU ARE IN A MULTIPLE STORY BUILDING...GO TO A SMALL INTERIOR
ROOM AWAY FROM WINDOWS!

LRS

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 21, 7:03 PM CDT	Severe Thunderstorm Warning	MPX	Todd	42 min
Jul 21, 7:38 PM CDT	Severe Thunderstorm Warning	MPX	Morrison, Todd	52 min
Jul 21, 8:37 PM CDT	Severe Thunderstorm Warning	MPX	Pope	43 min
Jul 21, 8:44 PM CDT	Severe Thunderstorm Warning	MPX	Morrison	46 min
Jul 21, 8:48 PM CDT	Severe Thunderstorm Warning	MPX	Morrison, Todd	52 min
Jul 21, 8:57 PM CDT	Tornado Warning	MPX	Kandiyohi, Stearns	33 min
Jul 21, 9:21 PM CDT	Tornado Warning	MPX	Morrison, Todd	29 min
Jul 21, 9:35 PM CDT	Tornado Warning	MPX	Kandiyohi, Meeker	25 min
Jul 21, 9:53 PM CDT	Severe Thunderstorm Warning	MPX	Benton, Morrison	37 min
Jul 21, 10:32 PM CDT	Severe Thunderstorm Warning	MPX	Benton, Mille Lacs, Sherburne	43 min
Jul 21, 11:19 PM CDT	Severe Thunderstorm Warning	MPX	Chisago, Isanti	61 min

Nearby

Tornado Warnings in Minnesota, 1996 Every tornado warning in 1996 Tornadoes 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.