Alert archive / Minnesota / Tornado Warnings in 1998

Tornado Warning 29, NWS Twin Cities, MN

June 18, 1998Pope County, Stevens County, Minnesota

NWS Twin Cities, MN issued this tornado warning at Jun 18, 1998, 4:25 PM CDT for Pope County, Stevens County, Minnesota. It was in force for 50 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 18, 1998, 4:25 PM CDT (21:25 UTC)
Expired: Jun 18, 1998, 5:15 PM CDT
In force: 50 min
Issued by: NWS Twin Cities, MN
Area: Whole counties

Counties Pope County, MN, Stevens County, MN

The radar

The Minneapolis radar (KMPX), 188 km from the middle of the area, began a volume at 21:24 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 18, 4:40 PM CDT	Thunderstorm Wind 50	Cyrus, MN	Large tree limbs blown down. Estimated windspeed.

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, 9.4 hours before the alert went out and 185 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: 430 J/kg
Mixed-layer CIN: -72 J/kg
Mixed-layer LCL: 666 m above ground
0-6 km bulk shear: 24 kt
0-1 km storm-relative helicity: -22 m²/s²
0-3 km storm-relative helicity: -35 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 182126 RRA
TORMSP
MNC121-149-182215-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
425 PM CDT THU JUN 18 1998

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES/CHANHASSEN HAS
ISSUED A

* TORNADO WARNING FOR...
  WESTERN POPE COUNTY IN WEST CENTRAL MINNESOTA
  EASTERN STEVENS COUNTY IN WEST CENTRAL MINNESOTA

* UNTIL 515 PM CDT

* AT 425PM CDT...DOPPLER RADAR DETECTED A POSSIBLE TORNADO NEAR
  CYRUS...ABOUT 30 SOUTHWEST OF ALEXANDRIA.  THE STORM WAS MOVING
  NORTH NORTHWEST AT 35 MPH.

* SOME LOCATIONS AFFECTED
    OPEN AREAS BETWEEN CYRUS AND MORRIS

IF YOU ARE IN A CAR...GO IN A NEARBY STURDY BUILDING!  AS A LAST
RESORT LIE FLAT IN A DITCH AND COVER YOUR HEAD!

CME

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 18, 2:32 AM CDT	Severe Thunderstorm Warning	MPX	Redwood	48 min
Jun 18, 11:36 AM CDT	Severe Thunderstorm Warning	MPX	Faribault	34 min
Jun 18, 1:20 PM CDT	Severe Thunderstorm Warning	MPX	Carver, McLeod	30 min
Jun 18, 2:38 PM CDT	Tornado Warning	MPX	Morrison	37 min
Jun 18, 3:39 PM CDT	Tornado Warning	MPX	Chippewa, Kandiyohi, Swift	31 min
Jun 18, 3:59 PM CDT	Tornado Warning	MPX	Redwood, Renville	46 min
Jun 18, 4:18 PM CDT	Tornado Warning	MPX	Kandiyohi	47 min
Jun 18, 4:44 PM CDT	Tornado Warning	MPX	Renville	46 min
Jun 18, 5:16 PM CDT	Severe Thunderstorm Warning	MPX	Kandiyohi, Meeker	49 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.