Alert archive / North Dakota / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 103, NWS Grand Forks, ND

July 4, 2000Grand Forks County, North Dakota

NWS Grand Forks, ND issued this severe thunderstorm warning at Jul 4, 2000, 9:34 PM CDT for Grand Forks County, North Dakota. It was in force for 31 min. No storm report in the archive falls 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.

The facts

Issued: Jul 4, 2000, 9:34 PM CDT (02:34 UTC)
Expired: Jul 4, 2000, 10:05 PM CDT
In force: 31 min
Issued by: NWS Grand Forks, ND
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Grand Forks County, ND

The radar

The Fargo/Grand Forks radar (KMVX), 32 km from the middle of the area, began a volume at 02:38 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 nearest sounding before it

Bismarck Municip, ND (KBIS), launched 00:00Z, 2.6 hours before the alert went out and 281 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: 1565 J/kg
Mixed-layer CIN: -56 J/kg
Mixed-layer LCL: 683 m above ground
0-6 km bulk shear: 41 kt
0-1 km storm-relative helicity: 76 m²/s²
0-3 km storm-relative helicity: 86 m²/s²
Significant tornado parameter: 0.8
Supercell composite: 4.7

Open this sounding in Storm Lab

The text

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

000 
WUUS53 KFGF 050235
SVRFAR
NDC035-050304-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE EASTERN ND-GRAND FORKS
934 PM CDT TUE JUL 4 2000

THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHEASTERN GRAND FORKS COUNTY IN NORTHEAST NORTH DAKOTA

* UNTIL 1005 PM CDT

* AT 933 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 7 MILES NORTHWEST OF HOLMES...OR ABOUT 16 MILES
  SOUTHWEST OF GRAND FORKS...MOVEMENT WAS TO THE EAST AT 30 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  HOLMES AT 935 PM CDT...
  THOMPSON AT 955 PM CDT...

DAMAGING WINDS OF 60 MPH...LARGE HAIL...DEADLY LIGHTNING AND TORNADOES 
ARE ALL POSSIBLE IN SEVERE THUNDERSTORMS. SEEK SHELTER IN A 
REINFORCED BUILDING IMMEDIATELY.

LAT...LON 4788 9753 4770 9748 4770 9693 4791 9704

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 Jul 4, 8:55 PM CDT, 39 minutes earlier.

Area forecast discussion, Jul 4, 8:55 PM CDT, 39 minutes before

FORECAST DISCUSSION FOR EASTERN NORTH DAKOTA AND NORTHWEST MINNESOTA
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
855 PM CDT TUE JUL 4 2000

UPDATED...AFTER IN HOUSE DISCUSSION AND REVIEW OF DATA WILL HOIST A
FLASH FLOOD WATCH OVERNIGHT FOR SE ND (COOPERTOWN TO HILLSBORO
SOUTH) AND FOR ADJACENT WCNTRL MN (ADA TO BRECKENRIDGE).  CONCERN IS
ACTIVITY WILL DEVELOP SOUTHEAST INTO SE ND OVERNIGHT AND MAY NOT
MOVE MUCH DUE TO DIFFLUENT FLOW ALOFT.  IN ADDITION...SPC THINKS MCS
IN SE MT WILL TRACK ALONG SD/ND BORDER TONIGHT AND THIS MAY REACH SE
ND TOO LATE.  PWAT AND FFG GUIDANCE REMAIN LOW WITH 1-HR 2 INCH OR
LESS IN SE ND.

------------------------

MESSY SFC PATTERN THIS EVENING WITH NUMEROUS BOUNDARIES OVER ND.
SFC LOW LOCATED IN SCNTRL ND WITH ANOTHER LOW IN SW SD.  SFC TROUGHS
LOCATED FROM SE MANITOBA TO CNTRL ND THEN TO WRN SD.  WARM FRONT
FROM THE ND LOW EAST INTO CNTRL/SRN MN.

COMPLEX OF TSTMS IN ERN ND HAS BEEN MOVING SLOWLY EAST WITH
STRONGEST TSTMS DEVELOPING SOUTH WITH TIME ALL EVENING.  THIS
21Z/00Z RUC MAINTAINS TIGHT 85H THETA-E RIDGE CNTRL ND...NR A
BIS-DVL LINE.  THIS DOES NOT MOVE EAST MUCH OVERNIGHT.  THUS
ANTICIPATE CELLS TO CONTINUE TO BUILD SOUTH WITH TIME INTO THIS RICH
THETA-E AIR...WITH GREATEST THREAT OF SVR WEATHER JMS/VCY AREA NEXT
FEW HOURS.  VERY HIGH PWAT (1.50+) SO HEAVY RAIN A BIG THREAT WHERE
CELLS TRAIN.  THICKNESS PATTERN SHOWS MCS WILL GENERALLY MOVE
DEVELOP SOUTHEAST WITH TIME HOWEVER IT WILL RUN INTO LESS RICH
THETA-E AIR.  SO SVR/HEAVY RAIN MAY DIMINISH OVERNIGHT.

IN ADDITION...MCS IN SE MT WILL TRACK INTO SW/SCNTRL ND TONIGHT
AND ACCORDING TO ETA TRACK ACROSS ND OVERNIGHT.  UNCERTAIN HOW
CURRENT ACTIVITY WILL INFLUENCE ANY MCS THAT WILL MOVE IN FROM THE
WEST.

WILL BROADBRUSH CWFA WITH SCT TSRA TONIGHT AND MENTION LOCALLY HEAVY
RAIN.

.FGF...FLASH FLOOD WATCH OVERNIGHT FOR SE ND AND oA SMALL PART OF
WCNTRL MN...INCLUDING NDZ028-030-038-039-049-052-053 AND
MNZ002-003-029.

RIDDLE

In the hours before

Local storm report, Jul 4, 7:54 PM CDT, 1 hour 40 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE EASTERN NORTH DAKOTA/GRAND FORKS
754 PM CDT TUE JUL 04 2000

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

0600 PM    4 N OBERON                ND   60 MPH TSTM GUST
07/04/00   BENSON                         ANTENNAS BLOWN DOWN AND
                                          TREES DOWN

0612 PM    5 W NEW ROCKFORD          ND   1 INCH HAIL
07/04/00   EDDY

N

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 4, 7:57 PM CDT	Severe Thunderstorm Warning	FGF	Nelson	28 min
Jul 4, 8:43 PM CDT	Severe Thunderstorm Warning	FGF	Barnes	47 min
Jul 4, 10:08 PM CDT	Severe Thunderstorm Warning	FGF	Grand Forks	32 min
Jul 4, 10:53 PM CDT	Severe Thunderstorm Warning	FGF	Barnes	32 min
Jul 4, 11:10 PM CDT	Severe Thunderstorm Warning	FGF	Cass	30 min
Jul 4, 11:40 PM CDT	Severe Thunderstorm Warning	FGF	Ransom	45 min
Jul 4, 11:42 PM CDT	Severe Thunderstorm Warning	FGF	Cass	43 min
Jul 5, 12:05 AM CDT	Flash Flood Warning	FGF	Barnes, Cass	6 hr
Jul 5, 12:25 AM CDT	Severe Thunderstorm Warning	FGF	Ransom	30 min
Jul 5, 12:38 AM CDT	Severe Thunderstorm Warning	FGF	Sargent	32 min
Jul 5, 12:54 AM CDT	Severe Thunderstorm Warning	FGF	Richland	46 min
Jul 5, 1:16 AM CDT	Flash Flood Warning	FGF	Ransom, Richland, Sargent	5 hr
Jul 5, 1:21 AM CDT	Severe Thunderstorm Warning	FGF	Sargent	29 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.