Alert archive / Minnesota / Tornado Warnings in 1998

Tornado Warning 9, NWS Twin Cities, MN

March 29, 1998Blue Earth County, Nicollet County, Minnesota

NWS Twin Cities, MN issued this tornado warning at Mar 29, 1998, 5:47 PM CST for Blue Earth County, Nicollet 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: Mar 29, 1998, 5:47 PM CST (23:47 UTC)
Expired: Mar 29, 1998, 6:35 PM CST
In force: 48 min
Issued by: NWS Twin Cities, MN
Area: Whole counties

Counties Blue Earth County, MN, Nicollet County, MN

The radar

The Minneapolis radar (KMPX), 87 km from the middle of the area, began a volume at 23:48 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.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Mar 29, 2:00 PM CST	Tornado Watch	SPC	6 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 11.8 hours before the alert went out and 85 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: 551 m above ground
0-6 km bulk shear: 46 kt
0-1 km storm-relative helicity: 160 m²/s²
0-3 km storm-relative helicity: 251 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KMSP 292347 RRA
TORMSP
MNC013-103-300035-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
547 PM CST SUN MAR 29 1998


* TORNADO WARNING FOR
  NORTHERN BLUE EARTH COUNTY - SOUTH CENTRAL MINNESOTA
  SOUTHERN NICOLLET COUNTY - SOUTH CENTRAL MINNESOTA

* UNTIL 635 PM CST

* SOME LOCATIONS AFFECTED
    MANKATO
    NORTH MANKATO
    EAGLE LAKE
    MADISON LAKE

* AT 545 PM CST DOPPLER RADAR DETECTED A POSSIBLE TORNADO 10 MILES
  WEST OF MANKATO.  THE STORM WAS MOVING EAST AT 20 MPH.

GO TO THE BASEMENT OR A SMALL INTERIOR ROOM ON THE LOWEST FLOOR!

MBK

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 29, 2:27 PM CST	Severe Thunderstorm Warning	MPX	Nicollet, Sibley	48 min
Mar 29, 2:43 PM CST	Severe Thunderstorm Warning	MPX	McLeod, Meeker, Wright	47 min
Mar 29, 2:47 PM CST	Severe Thunderstorm Warning	MPX	Faribault, Freeborn	48 min
Mar 29, 2:52 PM CST	Severe Thunderstorm Warning	MPX	Carver	48 min
Mar 29, 2:52 PM CST	Tornado Warning	MPX	Scott	38 min
Mar 29, 3:00 PM CST	Tornado Warning	MPX	Freeborn	35 min
Mar 29, 3:07 PM CST	Severe Thunderstorm Warning	MPX	Wright	33 min
Mar 29, 3:12 PM CST	Severe Thunderstorm Warning	MPX	Dakota, Hennepin, Ramsey	63 min
Mar 29, 3:12 PM CST	Severe Thunderstorm Warning	MPX	Anoka	63 min
Mar 29, 3:18 PM CST	Severe Thunderstorm Warning	MPX	Anoka, Sherburne	42 min
Mar 29, 3:23 PM CST	Severe Thunderstorm Warning	MPX	Freeborn, Steele	37 min
Mar 29, 3:32 PM CST	Severe Thunderstorm Warning	MPX	Dakota, Washington	63 min
Mar 29, 3:32 PM CST	Severe Thunderstorm Warning	MPX	Goodhue	63 min
Mar 29, 3:39 PM CST	Severe Thunderstorm Warning	MPX	Carver, Sibley	36 min
Mar 29, 3:43 PM CST	Severe Thunderstorm Warning	MPX	Chisago, Isanti	47 min
Mar 29, 4:21 PM CST	Tornado Warning	MPX	Brown, Watonwan	64 min
Mar 29, 4:28 PM CST	Severe Thunderstorm Warning	MPX	Scott	47 min
Mar 29, 4:56 PM CST	Tornado Warning	MPX	Blue Earth, Nicollet	59 min
Mar 29, 5:23 PM CST	Tornado Warning	MPX	Le Sueur	52 min

Nearby

Tornado Warnings in Minnesota, 1998 Every tornado warning in 1998 Tornadoes in 1998

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; radar from the NEXRAD Level II archive.