Alert archive / North Dakota / Tornado Warnings in 1999

Tornado Warning 9, NWS Grand Forks, ND

June 6, 1999Walsh County, North Dakota

NWS Grand Forks, ND issued this tornado warning at Jun 6, 1999, 3:09 PM CDT for Walsh County, North Dakota. It was in force for 36 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 6, 1999, 3:09 PM CDT (20:09 UTC)
Expired
Jun 6, 1999, 3:45 PM CDT
In force
36 min
Issued by
NWS Grand Forks, ND
Area
Whole counties

County Walsh County, ND

The radar

The Fargo/Grand Forks radar (KMVX), 98 km from the middle of the area, began a volume at 20:10 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

TimeReportWhereRemark
Jun 6, 3:20 PM CDTTornado F0Edinburg, NDTwin tornadoes were reported.

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.

IssuedProductOfficeLasted
Jun 6, 12:30 PM CDTTornado WatchSPC6 hr

The nearest sounding before it

Bismarck Municip, ND (KBIS), launched 12:00Z, 8.2 hours before the alert went out and 286 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, Bismarck Municip, ND at 12:00Z on 1999-06-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 338 joules per kilogram.LCLLFCEL10008507005003002001001 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, Bismarck Municip, ND at 12:00Z on 1999-06-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 107 square meters per square second.193958Sfc1 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
338 J/kg
Mixed-layer CIN
-27 J/kg
Mixed-layer LCL
874 m above ground
0-6 km bulk shear
27 kt
0-1 km storm-relative helicity
107 m²/s²
0-3 km storm-relative helicity
138 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.2

Open this sounding in Storm Lab

The text

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

393 
WFUS1 KFAR 062010 RRA
TORFAR
NDC099-062045-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
309 PM CDT SUN JUN 6 1999

THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A

* TORNADO WARNING FOR...
  WESTERN WALSH COUNTY IN NORTHEASTERN NORTH DAKOTA

* UNTIL 345 PM CDT

* AT 308 PM CDT... NATIONAL WEATHER SERVICE DOPPLER RADAR
  AND SPOTTERS INDICATED   A TORNADO 25 MILES SOUTH OF LANGDON OR 6
  MILES SOUTHEAST OF FAIRDALE... MOVING NORTH AT 15 MPH.

* THE TORNADO IS EXPECTED TO BE NEAR...
  FAIRDALE AT 328 PM CDT

THIS IS A DANGEROUS STORM. IF YOU ARE IN THE PATH OF A TORNADO
ABANDON CARS AND MOBILE HOMES FOR A STURDY BUILDING.

TURNER

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 6, 1:25 PM CDTSevere Thunderstorm WarningFGFEddy35 min
Jun 6, 1:33 PM CDTTornado WarningFGFEddy32 min
Jun 6, 1:43 PM CDTTornado WarningFGFBenson, Eddy32 min
Jun 6, 1:51 PM CDTTornado WarningFGFRamsey34 min
Jun 6, 1:57 PM CDTTornado WarningFGFNelson, Ramsey33 min
Jun 6, 2:26 PM CDTTornado WarningFGFRamsey34 min
Jun 6, 2:29 PM CDTSevere Thunderstorm WarningFGFBenson36 min
Jun 6, 2:35 PM CDTTornado WarningFGFWalsh35 min
Jun 6, 3:04 PM CDTTornado WarningFGFCavalier36 min
Jun 6, 3:21 PM CDTTornado WarningFGFPembina34 min
Jun 6, 3:38 PM CDTTornado WarningFGFCavalier32 min
Jun 6, 4:04 PM CDTSevere Thunderstorm WarningFGFPembina36 min
Jun 6, 4:10 PM CDTSevere Thunderstorm WarningFGFCavalier35 min

Nearby

Tornado Warnings in North Dakota, 1999Every tornado warning in 1999Tornadoes in 1999

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.