Alert archive / Minnesota / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 264, NWS Twin Cities, MN

July 14, 1998Morrison County, Todd County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Jul 14, 1998, 5:14 PM CDT for Morrison County, Todd County, Minnesota. It was in force for 61 min. 2 reports 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 14, 1998, 5:14 PM CDT (22:14 UTC)
Expired: Jul 14, 1998, 6:15 PM CDT
In force: 61 min
Issued by: NWS Twin Cities, MN
Area: Whole counties

Counties Morrison County, MN, Todd County, MN

The radar

The Minneapolis radar (KMPX), 155 km from the middle of the area, began a volume at 22:16 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
Jul 14, 5:45 PM CDT	Thunderstorm Wind 50	Long Prairie, MN	Trees blown down. Estimated windspeed.
Jul 14, 5:47 PM CDT	Thunderstorm Wind 50	Belle Prairie, MN	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 watch it was issued in

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

Issued	Product	Office	Lasted
Jul 14, 2:00 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 10.2 hours before the alert went out and 153 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: 2677 J/kg
Mixed-layer CIN: -139 J/kg
Mixed-layer LCL: 801 m above ground
0-6 km bulk shear: 12 kt
0-1 km storm-relative helicity: 9 m²/s²
0-3 km storm-relative helicity: -14 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 142214 RRA
SVRMSP
MNC097-153-142315-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
514 PM CDT TUE JUL 14 1998

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

* SEVERE THUNDERSTORM WARNING FOR...
  WESTERN MORRISON COUNTY IN CENTRAL MINNESOTA
  TODD COUNTY IN CENTRAL MINNESOTA

* UNTIL 615 PM CDT

* AT 515 PM CDT...DOPPLER RADAR INDICATED SEVERE STORMS ...ONE
  LOCATED 15 MILES NORTHEAST OF LONG PRAIRIE AND THE SECOND 22
  MILES NORTH OF ALEXANDRIA.  THE STORMS WERE MOVING SOUTHEAST AT 20
  MPH.

* SOME LOCATIONS AFFECTED
    CUSHING
    LITTLE FALLS
    EAGLE BEND
    LONG PRAIRIE
    BROWERVILLE

THESE ARE DANGEROUS STORMS WITH LARGE HAIL.  STAY INDOORS AWAY FROM
WINDOWS.

JMP

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 14, 4:11 PM CDT	Severe Thunderstorm Warning	MPX	Todd	64 min
Jul 14, 5:07 PM CDT	Severe Thunderstorm Warning	MPX	Douglas	33 min
Jul 14, 6:08 PM CDT	Severe Thunderstorm Warning	MPX	Douglas	62 min
Jul 14, 6:30 PM CDT	Severe Thunderstorm Warning	MPX	Morrison	60 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 1998 Every severe thunderstorm warning 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.