Alert archive / North Dakota / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 240, NWS Grand Forks, ND

August 28, 2000Walsh County, North Dakota

NWS Grand Forks, ND issued this severe thunderstorm warning at Aug 28, 2000, 10:33 AM CDT for Walsh 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, 10:33 AM CDT (15:33 UTC)
Expired: Aug 28, 2000, 11:05 AM CDT
In force: 32 min
Issued by: NWS Grand Forks, ND
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Walsh County, ND

The radar

The Fargo/Grand Forks radar (KMVX), 109 km from the middle of the area, began a volume at 15:32 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

Time	Report	Where	Remark
Aug 28, 10:35 AM CDT	Hail 1	Hoople, 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 12:00Z, 3.6 hours before the alert went out and 306 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: 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 281533
SVRFAR
NDC099-281605-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE EASTERN ND-GRAND FORKS
1033 AM CDT MON AUG 28 2000

THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EASTERN WALSH COUNTY IN NORTHEAST NORTH DAKOTA...

* UNTIL 1105 AM CDT

* AT 1032 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 7 MILES NORTHEAST OF NASH...OR ABOUT 11 MILES
  NORTH OF GRAFTON...MOVEMENT WAS TO THE NORTHEAST AT 35 MPH.

* THE SEVERE THUNDERSTORM WILL REMAIN IN RURAL AREAS OF
  EXTREME NORTHEASTERN WALSH COUNTY

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

LAT...LON 4852 9771 4844 9750 4850 9726 4851 9739

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 Aug 28, 10:30 AM CDT, 3 minutes earlier.

Area forecast discussion, Aug 28, 10:30 AM CDT, 3 minutes before

FORECAST DISCUSSION FOR EASTERN NORTH DAKOTA AND NORTHWEST MINNESOTA
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS
1030 AM CDT MON AUG 28 2000

GOOD HGT 500 HPA RISE-FALL COUPLET TO THE W OVR MT AND WA.
RELATIVELY COLD 500 HPA TEMPS WERE TO THE W AND FCST TO MOV INTO NW
COUNTIES THIS AFTN. SW-NE UPR LVL JET PUNCHING INTO THE AREA WITH
STORMS FIRING UNDER AND IN THE LFQ. WATER VAPOR LOOP SHOWING DARK
BAND MOVG IN FM THE SW. PLENTY OF MSTR AVAILABLE WITH 330+K 850 HPA
THETA-E AIR ACRS MUCH OF CWFA. DRIER AND COOLER AIR TO MOV IN LATE
THIS MORN AND THIS AFTN. EXTENDED TSRA WATCH TIL NOON.

.FGF...SVR TSRA WATCH #715 IN EFFECT TIL NOON FOR NDZ006>008-014>016-
024-026>030-054-MNZ001-002-004>009-013>017-022-023.

HOPPES

In the hours before

Special weather statement, Aug 28, 5:00 AM CDT, 5 hours 33 minutes before

MNZ001>009-013>017-022>024-027>032-040-NDZ006>008-014>016-024-
026>030-038-039-049-052>054-281300-

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
500 AM CDT MON AUG 28 2000

...SEVERE THUNDERSTORMS EXPECTED ACROSS MUCH OF EASTERN NORTH DAKOTA
AND NORTHWESTERN MINNESOTA TODAY...

SYNOPSIS...A STRONG UPPER LEVEL SYSTEM WILL PUSH A COLD FRONT INTO
NORTHEAST NORTH DAKOTA THIS MORNING...REACHING THE RED RIVER DURING
THE EARLY AFTERNOON....THEN INTO EASTERN MINNESOTA BY EVENING.
AHEAD OF THIS FRONT SURFACE DEW POINTS IN THE MID TO UPPER 60S WILL
COMBINE WITH SURFACE TEMPERATURES IN THE 80S TO MAKE A VERY
UNSTABLE AIRMASS.

AREA OF CONCERN...SLIGHT RISK OF SEVERE THUNDERSTORMS THIS MORNING
WEST OF THE RED RIVER. INCREASING RISK SHIFTING EAST OF THE RED RIVER
THIS AFTERNOON. GREATEST RISK THIS AFTERNOON EAST OF THE RED RIVER
ACROSS NORTHWEST MINNESOTA.

TIME...WEST OF THE RED RIVER VALLEY THIS MORNING AND VERY EARLY
AFTERNOON...EAST OF THE RED RIVER AFTERNOON INTO EARLY EVENING.

TYPE OF HAZARD...MAINLY LARGE HAIL AND DAMAGING WINDS. ISOLATED
TORNADOES POSSIBLE EAST OF THE RED RIVER.

ME/PB

NNNN

Local storm report, Aug 28, 9:17 AM CDT, 1 hour 16 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE EASTERN NORTH DAKOTA/GRAND FORKS
917 AM CDT MON AUG 28 2000

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

0730 AM    LANGDON                   ND   65 MPH TSTM GUST
08/28/00   CAVALIER                       5 MILES NORTHEAST OF
                                          LANGDON

0827 AM    LANGDON                   ND   .75 INCH HAIL
08/28/00   CAVALIER                       15 MILES SOUTHWEST OF
                                          LANGDON

0828 AM    LANGDON                   ND   .75 INCH HAIL
08/28/00   CAVALIER                       15 MILES SOUTHWEST OF
                                          LANGDON

0912 AM    ADAMS                     ND
08/28/00   WALSH                          RW++ 5 MILES NORTHEAST OF
                                          ADAMS

N

Local storm report, Aug 28, 10:14 AM CDT, 19 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE EASTERN NORTH DAKOTA/GRAND FORKS
1014 AM CDT MON AUG 28 2000

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

0730 AM    LANGDON                   ND   65 MPH TSTM GUST
08/28/00   CAVALIER                       5 MILES NORTHEAST OF
                                          LANGDON

0827 AM    LANGDON                   ND   .75 INCH HAIL
08/28/00   CAVALIER                       15 MILES SOUTHWEST OF
                                          LANGDON

0828 AM    LANGDON                   ND   .75 INCH HAIL
08/28/00   CAVALIER                       15 MILES SOUTHWEST OF
                                          LANGDON

0912 AM    ADAMS                     ND
08/28/00   WALSH                          RW++ 5 MILES NORTHEAST OF
                                          ADAMS

1005 AM    ST THOMAS                 ND   1.5 INCH HAIL
08/28/00   PEMBINA                        SILVER DOLLAR SIZE HAIL
                                          REPORTED BY ARB #599 5.5
                                          MILES NORTHWEST OF ST THOS
                                          PEMBINA CO. ND

N

Local storm report, Aug 28, 10:32 AM CDT, 1 minute before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE EASTERN NORTH DAKOTA/GRAND FORKS
1032 AM CDT MON AUG 28 2000

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

1020 AM    HOOPLE                    ND   1 INCH HAIL
08/28/00   WALSH

N

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 28, 5:17 AM CDT	Severe Thunderstorm Warning	FGF	Benson, Eddy	58 min
Aug 28, 6:00 AM CDT	Severe Thunderstorm Warning	FGF	Benson, Ramsey	45 min
Aug 28, 6:14 AM CDT	Severe Thunderstorm Warning	FGF	Eddy	31 min
Aug 28, 6:24 AM CDT	Severe Thunderstorm Warning	FGF	Nelson, Walsh	31 min
Aug 28, 6:44 AM CDT	Severe Thunderstorm Warning	FGF	Benson, Eddy, Nelson, Ramsey	46 min
Aug 28, 6:44 AM CDT	Severe Thunderstorm Warning	FGF	Walsh	46 min
Aug 28, 7:00 AM CDT	Severe Thunderstorm Warning	FGF	Cavalier	45 min
Aug 28, 7:40 AM CDT	Severe Thunderstorm Warning	FGF	Towner	30 min
Aug 28, 8:23 AM CDT	Severe Thunderstorm Warning	FGF	Cavalier	32 min
Aug 28, 8:38 AM CDT	Severe Thunderstorm Warning	FGF	Ramsey	32 min
Aug 28, 8:48 AM CDT	Severe Thunderstorm Warning	FGF	Cavalier, Walsh	32 min
Aug 28, 9:24 AM CDT	Severe Thunderstorm Warning	FGF	Pembina	31 min
Aug 28, 9:52 AM CDT	Severe Thunderstorm Warning	FGF	Pembina	28 min
Aug 28, 10:05 AM CDT	Severe Thunderstorm Warning	FGF	Walsh	30 min
Aug 28, 10:18 AM CDT	Severe Thunderstorm Warning	FGF	Pembina	32 min
Aug 28, 10:47 AM CDT	Severe Thunderstorm Warning	FGF	Pembina	28 min

Nearby

Severe Thunderstorm Warnings in North Dakota, 2000 Every 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.