Alert archive / North Dakota / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 233, NWS Grand Forks, ND

August 28, 2000Cavalier County, North Dakota

NWS Grand Forks, ND issued this severe thunderstorm warning at Aug 28, 2000, 8:23 AM CDT for Cavalier County, North Dakota. It was in force for 32 min. 1 report came from inside the area while it was in force.

The area

The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties, with what was reported inside it.

The facts

Issued
Aug 28, 2000, 8:23 AM CDT (13:23 UTC)
Expired
Aug 28, 2000, 8:55 AM CDT
In force
32 min
Issued by
NWS Grand Forks, ND
Area
Whole counties; the outline is the Mesonet’s reconstruction

County Cavalier County, ND

The radar

The Fargo/Grand Forks radar (KMVX), 160 km from the middle of the area, began a volume at 13:24 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

TimeReportWhereRemark
Aug 28, 8:27 AM CDTHail 0.75Langdon, 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.

The watch it was issued in

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

IssuedProductOfficeLasted
Aug 28, 5:30 AM CDTSevere Thunderstorm WatchSPC5 hr

The nearest sounding before it

Bismarck Municip, ND (KBIS), launched 12:00Z, 1.4 hours before the alert went out and 270 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 2000-08-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 533 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 2000-08-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 189 square meters per square second.1939587897117Sfc1 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
533 J/kg
Mixed-layer CIN
-391 J/kg
Mixed-layer LCL
665 m above ground
0-6 km bulk shear
50 kt
0-1 km storm-relative helicity
189 m²/s²
0-3 km storm-relative helicity
375 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

The text

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

000 
WUUS53 KFGF 281323
SVRFAR
NDC019-281355-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE EASTERN ND-GRAND FORKS
823 AM CDT MON AUG 28 2000

THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CAVALIER COUNTY IN NORTHEAST NORTH DAKOTA...
  THIS INCLUDES THE CITY OF LANGDON

* UNTIL 855 AM CDT

* AT 818 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 8 MILES SOUTHEAST OF ALSEN...OR ABOUT 20 MILES
  SOUTHWEST OF LANGDON...MOVEMENT WAS TO THE NORTHEAST AT 30 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  LOMA AT 830 AM CDT...
  HANNAH AT 835 AM CDT...
  LANGDON AT 840 AM CDT...
  OSNABROCK AT 850 AM CDT...

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

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 AM CDT
MONDAY MORNING FOR NORTHWESfTERN MINNESOTA AND EASTERN NORTH DAKOTA.

LAT...LON 4861 9892 4856 9852 4866 9794 4886 9810
          4899 9883

NNNN

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 28, 5:17 AM CDTSevere Thunderstorm WarningFGFBenson, Eddy58 min
Aug 28, 6:00 AM CDTSevere Thunderstorm WarningFGFBenson, Ramsey45 min
Aug 28, 6:14 AM CDTSevere Thunderstorm WarningFGFEddy31 min
Aug 28, 6:24 AM CDTSevere Thunderstorm WarningFGFNelson, Walsh31 min
Aug 28, 6:44 AM CDTSevere Thunderstorm WarningFGFBenson, Eddy, Nelson, Ramsey46 min
Aug 28, 6:44 AM CDTSevere Thunderstorm WarningFGFWalsh46 min
Aug 28, 7:00 AM CDTSevere Thunderstorm WarningFGFCavalier45 min
Aug 28, 7:40 AM CDTSevere Thunderstorm WarningFGFTowner30 min
Aug 28, 8:38 AM CDTSevere Thunderstorm WarningFGFRamsey32 min
Aug 28, 8:48 AM CDTSevere Thunderstorm WarningFGFCavalier, Walsh32 min
Aug 28, 9:24 AM CDTSevere Thunderstorm WarningFGFPembina31 min
Aug 28, 9:52 AM CDTSevere Thunderstorm WarningFGFPembina28 min
Aug 28, 10:05 AM CDTSevere Thunderstorm WarningFGFWalsh30 min
Aug 28, 10:18 AM CDTSevere Thunderstorm WarningFGFPembina32 min
Aug 28, 10:33 AM CDTSevere Thunderstorm WarningFGFWalsh32 min
Aug 28, 10:47 AM CDTSevere Thunderstorm WarningFGFPembina28 min

Nearby

Severe Thunderstorm Warnings in North Dakota, 2000Every severe thunderstorm warning in 2000

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.