Alert archive / North Dakota / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 16, NWS Grand Forks, ND

May 6, 2000Benson County, Cavalier County, Ramsey County, North Dakota

NWS Grand Forks, ND issued this severe thunderstorm warning at May 6, 2000, 2:11 AM CDT for Benson County, Cavalier County, Ramsey County, North Dakota. It was in force for 29 min. 5 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
May 6, 2000, 2:11 AM CDT (07:11 UTC)
Expired
May 6, 2000, 2:40 AM CDT
In force
29 min
Issued by
NWS Grand Forks, ND
Area
Whole counties

Counties Benson County, ND, Cavalier County, ND, Ramsey County, ND

The radar

The Fargo/Grand Forks radar (KMVX), 147 km from the middle of the area, began a volume at 07:11 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
May 6, 2:15 AM CDTHail 1St Michael, ND
May 6, 2:30 AM CDTHail 1.75Osnabrock, ND
May 6, 2:30 AM CDTHail 0.75Devils Lake, ND
May 6, 2:30 AM CDTHail 1Webster, ND
May 6, 2:47 AM CDTHail 1Edmore, 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 nearest sounding before it

Bismarck Municip, ND (KBIS), launched 00:00Z, 7.2 hours before the alert went out and 226 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 00:00Z on 2000-05-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1703 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Bismarck Municip, ND at 00:00Z on 2000-05-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 26 square meters per square second.19395878Sfc1 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
1703 J/kg
Mixed-layer CIN
-86 J/kg
Mixed-layer LCL
1710 m above ground
0-6 km bulk shear
48 kt
0-1 km storm-relative helicity
26 m²/s²
0-3 km storm-relative helicity
184 m²/s²
Significant tornado parameter
0.2
Supercell composite
5.5

Open this sounding in Storm Lab

The text

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

000 
WUUS53 KFGF 060717 COR
SVRFAR
NDC005-019-071-060740-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE EASTERN ND-GRAND FORKS
211 AM CDT SAT MAY 6 2000

THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHEASTERN BENSON COUNTY IN NORTHEAST NORTH DAKOTA
  SOUTH CENTRAL CAVALIER COUNTY IN NORTHEAST NORTH DAKOTA
  RAMSEY COUNTY IN NORTHEAST NORTH DAKOTA

* UNTIL 240 AM CDT

* AT 206 AM CDT...NATIONAL WEATHER SEVICE DOPPLER RADAR INDICATED    
  A LINE OF SEVERE THUNDERSTORMS FROM 8 MILES NORTH OF OBERON...OR
  15 MILES SOUTHWEST OF DEVILS LAKE...TO 10 MILES WEST OF            
  EDMORE...OR 25 MILES NORTHEAST OF DEVILS LAKE...MOVING             
  NORTHEAST AT 35 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  DERRICK AT 225 AM CDT
  NEKOMA AT 235 AM CDT

DAMAGING WINDS...LARGE HAIL...DEADLY LIGHTNING AND TORNADOES ARE ALL
POSSIBLE IN SEVERE THUNDERSTORMS. SEEK SHELTER IN A REINFORCED
BUILDING IMMEDIATELY.

NNNN

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.

NWS Grand Forks, ND wrote its last area forecast discussion before this severe thunderstorm warning went out at May 5, 8:55 PM CDT, 5 hours 16 minutes earlier.

Area forecast discussion, May 5, 8:55 PM CDT, 5 hours 16 minutes before
FORECAST DISCUSSION FOR EASTERN NORTH DAKOTA AND NORTHWEST MINNESOTA
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS
855 PM CDT FRI MAY 5 2000

SEVERE THUNDERSTORMS CONTINUE TO FIRE OVER NW MN THIS EVENING...WITH
SVR THUNDERSTORM WATCH JUST ARRIVING. MOST ACTIVITY CONFINED ALONG
AND NORTH OF SFC BOUNDARY ATTM WHERE BEST MOISTURE CONVERGENCE
LOCATED. WITH MAIN UPPER LEVEL SYSTEM STILL WELL OFF TO THE
SOUTHEAST AND WITH SFC LOW STILL HOLDING OVER ERN WY...LOOK LIKE IT
WILL BE A BUSY NIGHT.

WILL NOT MAKE ANY ADJUSTMENTS TO ZONES OTHER THAN ADDING IN WATCH
WHICH WILL BE ISSUED SHORTLY.

RJT

In the hours before

Local storm report, May 6, 1:33 AM CDT, 38 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE EASTERN NORTH DAKOTA/GRAND FORKS
133 AM CDT SAT MAY 06 2000

TIME(CDT)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0820 PM    LAKE BRONSON              MN   .75 INCH HAIL
05/05/00   KITTSON                        DIME SIZED HAIL REPORTED
                                          BY SPOTTER

0842 PM    KARLSTAD                  MN   .88 INCH HAIL
05/05/00   KITTSON                        NICKLE SIZED HAIL REPORTED
                                          BY SPOTTER

0850 PM    LAKE BRONSON              MN   .88 INCH HAIL
05/05/00   KITTSON                        NICKLE SIZE HAIL REPORTED
                                          BY SPOTTER

0852 PM    BADGER                    MN   1 INCH HAIL
05/05/00   ROSEAU                         QUARTER SIZE HAIL FELL FOR
                                          5 TO 10 MINUTES. DIME SIZE
                                          HAIL ALSO REPORTED AT
                                          BADGER

0900 PM    MIDDLE RIVER              MN   WIND DAMAGE
05/05/00   MARSHALL                       METAL BUILDING LOST
                                          PORTION OF ROOF AND WAS
                                          MOVED OFF OF FOUNDATION
                                          DELAYED REPORT FROM HAM
                                          OPERATOR

0920 PM    BINFORD                   ND   1.5 INCH HAIL
05/05/00   GRIGGS                         QUARTER SIZE HAIL ALSO
                                          REPORTED IN BINFORD AT 817
                                          PM CST

0925 PM    16 NE MIDDLE RIVER        MN   .75 INCH HAIL
05/05/00   MARSHALL                       DIME SIZE HAIL REPORTED BY
                                          SPOTTER

0950 PM    ANETA                     ND   1.5 INCH HAIL
05/05/00   NELSON                         1.5 INCH HAIL REPORTED BY
                                          SPOTTER

0956 PM    ANETA                     ND   1.75 INCH HAIL
05/05/00   NELSON                         GOLFBALL SIZE HAIL
                                          REPORTED BY SHERIFF OFFICE

NNNN

RJT
Local storm report, May 6, 1:54 AM CDT, 17 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE EASTERN NORTH DAKOTA/GRAND FORKS
154 AM CDT SAT MAY 06 2000

TIME(CDT)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

1015 PM    ANETA                     ND   .75 INCH HAIL
05/05/00   NELSON                         DIME SIZE HAIL REPORTED BY
                                          SPOTTER

1041 PM    1 S EMERADO               ND   .75 INCH HAIL
05/05/00   GRAND FORKS                    DIME SIZE HAIL REPORTED BY
                                          HAM RADIO OPERATOR

1100 AM    HALLOCK                   MN   .75 INCH HAIL
05/05/00   KITTSON                        DIME SIZE HAIL REPORTED BY
                                          SPOTTER

NNNN

RJT
Local storm report, May 6, 1:54 AM CDT, 17 minutes before
PRELIMINARY LOCAL STORM REPORT...CORRECT HALLOCK TIME
NATIONAL WEATHER SERVICE EASTERN NORTH DAKOTA/GRAND FORKS
154 AM CDT SAT MAY 06 2000

TIME(CDT)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

1015 PM    ANETA                     ND   .75 INCH HAIL
05/05/00   NELSON                         DIME SIZE HAIL REPORTED BY
                                          SPOTTER

1041 PM    1 S EMERADO               ND   .75 INCH HAIL
05/05/00   GRAND FORKS                    DIME SIZE HAIL REPORTED BY
                                          HAM RADIO OPERATOR

1100 AM    HALLOCK                   MN   .75 INCH HAIL
05/05/00   KITTSON                        DIME SIZE HAIL REPORTED BY
                                          SPOTTER

NNNN

RJT

The office that day

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

IssuedProductOfficeCountiesLasted
May 5, 9:13 PM CDTSevere Thunderstorm WarningFGFGriggs, Nelson42 min
May 5, 9:53 PM CDTSevere Thunderstorm WarningFGFGriggs, Nelson, Steele42 min
May 5, 9:53 PM CDTSevere Thunderstorm WarningFGFGrand Forks42 min
May 5, 10:10 PM CDTSevere Thunderstorm WarningFGFGriggs40 min
May 5, 10:52 PM CDTSevere Thunderstorm WarningFGFGriggs, Steele33 min
May 6, 1:40 AM CDTSevere Thunderstorm WarningFGFBenson, Eddy30 min
May 6, 1:40 AM CDTSevere Thunderstorm WarningFGFRamsey30 min
May 6, 2:40 AM CDTSevere Thunderstorm WarningFGFCavalier, Pembina45 min
May 6, 2:42 AM CDTSevere Thunderstorm WarningFGFRamsey28 min
May 6, 2:53 AM CDTSevere Thunderstorm WarningFGFNelson, Walsh32 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.