Alert archive / Minnesota / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 113, NWS Grand Forks, ND

June 27, 1998Wadena County, Minnesota

NWS Grand Forks, ND issued this severe thunderstorm warning at Jun 27, 1998, 9:56 PM CDT for Wadena County, Minnesota. It was in force for 44 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
Jun 27, 1998, 9:56 PM CDT (02:56 UTC)
Expired
Jun 27, 1998, 10:40 PM CDT
In force
44 min
Issued by
NWS Grand Forks, ND
Area
Whole counties

County Wadena County, MN

The radar

The Fargo/Grand Forks radar (KMVX), 207 km from the middle of the area, began a volume at 02:59 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.

IssuedProductOfficeLasted
Jun 27, 9:00 PM CDTSevere Thunderstorm WatchSPC5 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 2.9 hours before the alert went out and 220 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-pSkew-T log-p diagram, Minneapolis, MN at 00:00Z on 1998-06-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Minneapolis, MN at 00:00Z on 1998-06-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -5 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
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
2178 m above ground
0-6 km bulk shear
62 kt
0-1 km storm-relative helicity
-5 m²/s²
0-3 km storm-relative helicity
238 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.

542 
WUUS1 KFAR 280256 RRA
SVRFAR
MNC159-280340-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
956 PM CDT SAT JUN 27 1998

THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  WADENA COUNTY IN NORTH CENTRAL MINNESOTA

* UNTIL 1040 PM CDT

* AT 950 PM...RADAR INDICATED A SEVERE THUNDERSTORM 35
  MILES SOUTHEAST OF DETROIT LAKES. MOVEMENT WAS NORTHEAST AT 30
  MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  WADENA
  NIMROD

REMEMBER SEVERE THUNDERSTORMS CAN AND OCCASIONALLY PRODUCE
TORNADOES WITH LITTLE OR NO ADVANCED WARNING.

RIDDLE

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 27, 8:23 PM CDTTornado WarningFGFPolk32 min
Jun 27, 8:59 PM CDTSevere Thunderstorm WarningFGFBecker31 min
Jun 27, 9:01 PM CDTSevere Thunderstorm WarningFGFBeltrami34 min
Jun 27, 9:17 PM CDTSevere Thunderstorm WarningFGFClearwater33 min
Jun 27, 9:29 PM CDTSevere Thunderstorm WarningFGFBecker31 min
Jun 27, 9:34 PM CDTSevere Thunderstorm WarningFGFBeltrami31 min
Jun 27, 9:57 PM CDTSevere Thunderstorm WarningFGFHubbard33 min
Jun 27, 10:43 PM CDTSevere Thunderstorm WarningFGFWadena32 min
Jun 27, 10:49 PM CDTSevere Thunderstorm WarningFGFHubbard36 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 1998Every 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.