Alert archive / Minnesota / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 16, NWS Grand Forks, ND

June 18, 1990Kittson County, Minnesota; Pembina County, North Dakota

NWS Grand Forks, ND issued this severe thunderstorm warning at Jun 18, 1990, 8:13 PM CDT for Kittson County, Minnesota; Pembina County, North Dakota. It was in force for 62 min. 3 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: Jun 18, 1990, 8:13 PM CDT (01:13 UTC)
Expired: Jun 18, 1990, 9:15 PM CDT
In force: 62 min
Issued by: NWS Grand Forks, ND
Area: Whole counties

Counties Kittson County, MN, Pembina County, ND

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

What was reported inside it

Time	Report	Where
Jun 18, 8:15 PM CDT	Tornado F0	Pembina, ND
Jun 18, 8:35 PM CDT	Tornado F0	Pembina, ND
Jun 18, 8:50 PM CDT	Hail 1.75	Pembina, ND

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. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.

The nearest sounding before it

International Fa, MN (KINL), launched 00:00Z, 1.2 hours before the alert went out and 285 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: 61 J/kg
Mixed-layer CIN: -60 J/kg
Mixed-layer LCL: 1789 m above ground
0-6 km bulk shear: 29 kt
0-1 km storm-relative helicity: -9 m²/s²
0-3 km storm-relative helicity: -16 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 KFAR 190113
SVRFAR
NDC067-MNC069-190215-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING 
NATIONAL WEATHER SERVICE FARGO ND
813 PM CDT MON JUN 18 1990

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM 
WARNING EFFECTIVE UNTIL 915 PM CDT FOR PEOPLE IN THE FOLLOWING 
COUNTIES

   IN THE NORTHEAST PART OF NORTH DAKOTA
      SOUTHEAST PEMBINA...

   IN THE NORTHWEST PART OF MINNESOTA
      SOUTHERN KITTSON...

AT 805 PM CDT RADAR INDICATED A SEVERE THUNDERSTORM 20 MILES NORTH
OF GRAFTON NORTH DAKOTA MOVING EAST AT 35 MILES AN HOUR. SOME TOWNS
IN THE WARNING AREA INCLUDE DRAYTON AND ROBBIN.

REMEMBER...SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE
A TORNADO WITH LI)TTLE OR NO ADVANCE WARNING...SO BE ON THE LOOKOUT.

IF THREATENING WEATHER APPROACHES...YOU SHOULD GO TO A PLACE OF
SAFETY IMMEDIATELY.  REPORT ALL SEVERE WEATHER TO YOUR LOCAL LAW
ENFORCEMENT AGENCY AFTER THE STORM PASSES.

VOELKER

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

Local storm report, Jun 18, 7:38 PM CDT, 35 minutes before

STORM REPORTS
NATIONAL WEATHER SERVICE FARGO ND
730 PM CDT MON JUN 18 1990

TIME      EVENT
650 PM CDT   CAVALIER COUNTY SHERIFF REPORTED A FUNNEL CLOUD 20 MILES
             NORTHEAST OF LANGDON ND (70 NORTHWEST OF GRAND FORKS)
             MOVING EAST.
705 PM CDT   PEMBINA COUNTY SHERIFF REPORTED THAT THE DEPUTY IN WALHALLA
             REPORTED THE HEAVIEST RAIN HES EVER SEEN AND PEA SIZED
             HAIL.
715 PM CDT   GOLF BALL SIZED HAIL REPORTED BY DEPUTY AT WALHALLA ND (65
             MILES NORTHWEST OF GRAND FORKS.

The office that day

Everything else NWS Grand Forks, ND issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 18, 8:58 PM CDT	Severe Thunderstorm Warning	FGF	Marshall	62 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 1990 Severe Thunderstorm Warnings in North Dakota, 1990 Every severe thunderstorm warning in 1990

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.