Alert archive / North Dakota / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 88, NWS Grand Forks, ND

June 29, 2000Eddy County, North Dakota

NWS Grand Forks, ND issued this severe thunderstorm warning at Jun 29, 2000, 9:16 PM CDT for Eddy County, North Dakota. It was in force for 34 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 29, 2000, 9:16 PM CDT (02:16 UTC)
Expired: Jun 29, 2000, 9:50 PM CDT
In force: 34 min
Issued by: NWS Grand Forks, ND
Area: Whole counties

County Eddy County, ND

The radar

The Fargo/Grand Forks radar (KMVX), 120 km from the middle of the area, began a volume at 02:19 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
Jun 29, 9:35 PM CDT	Hail 0.75	New Rockford, 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, 2.3 hours before the alert went out and 172 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: 211 J/kg
Mixed-layer CIN: -9 J/kg
Mixed-layer LCL: 2594 m above ground
0-6 km bulk shear: 29 kt
0-1 km storm-relative helicity: 0 m²/s²
0-3 km storm-relative helicity: 59 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.0

Open this sounding in Storm Lab

The text

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

465 
WUUS53 KFGF 300216
SVRFAR
NDC027-300250-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
916 PM CDT THU JUN 29 2000

THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EDDY COUNTY IN NORTHEASTERN NORTH DAKOTA

* UNTIL 950 PM CDT

* AT 915 PM CDT... NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  A SEVERE THUNDERSTORM 25 MILES SOUTH OF DEVILS LAKE OR 10 MILES
  NORTH OF BRANTFORD... MOVING SOUTHEAST AT 15 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  BRANTFORD AT 945 PM CDT

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

$$

GUST

N

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 Jun 29, 7:45 PM CDT, 1 hour 31 minutes earlier.

Area forecast discussion, Jun 29, 7:45 PM CDT, 1 hour 31 minutes before

FORECAST DISCUSSION FOR EASTERN NORTH DAKOTA AND NORTHWEST MINNESOTA
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
745 PM CDT THU JUN 29 2000

ANALYSIS/SHORT TERM...WEAK SFC TROF PASSING THROUGH NW MN EARLIER
THIS EVENING PROVIDED FOCUS FOR CONVECTION THROUGH THE MAX HEATING
PHASE TDY. THIS TROF/ACTIVITY HAS PUSHED EWD INTO NERN MN. ACTIVITY
IN SERN ND IS TIED TO THE TRAILING END OF THE SFC TROF AND THE
REGION OF HIGHER INSTABILITIES (LOWER LIS) CENTERED OVR CNTRL ND AND
SOMEWHAT AUGMENTED WITH A WEAK MID LVL SHTWV AXIS DROPPING THROUGH
THE CNTRL DKTAS IN THE NW FLOW PATTERN. ACTIVITY W OF DVL IS ALSO
ASSOCIATED WITH THIS AREA OF GREATER INSTABILITY. THE 18Z MESOETA
CARRIES THIS INSTABILITY AXIS INTO THE ERN EDGE OF THE RRV BETWEEN
03-06Z...MAINTAINING CAPES GREATER THAN 1000 J/KG THROUGH THIS
PERIOD. SFC BASED LIS APCNG MINUS 6 ARE CERTAINLY SUFFICIENT TO
MAINTAIN ISOLD STRONG TSTM ACTIVITY TO NEAR MIDNIGHT OVR PTNS OF ERN
ND SOUTH OF U.S. HWY 2. MOST OF NW MN WILL REMAIN SOMEWHAT UNSTABLE
THROUGH THE EVENING...BUT THE ACTIVITY IN SRN MAN SHOULD DIMINISH
BEFORE MOVING INTO THE FAR NRN MN ZONES LATE TNGT SO PCPN NOT
EXPECTED. WILL NEED TO CLOSELY MONITOR MOST TSTM CELLS SINCE SOME
HAIL THREAT WILL PERSIST THIS EVENING. FCST UPDATE HAS BEEN ISSUED.

.FGF...NONE.
GUST

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 29, 8:20 PM CDT	Severe Thunderstorm Warning	FGF	Benson	35 min
Jun 29, 8:44 PM CDT	Severe Thunderstorm Warning	FGF	Eddy	31 min
Jun 29, 9:33 PM CDT	Severe Thunderstorm Warning	FGF	Griggs	32 min
Jun 29, 9:53 PM CDT	Severe Thunderstorm Warning	FGF	Steele	32 min
Jun 29, 10:24 PM CDT	Severe Thunderstorm Warning	FGF	Steele	36 min
Jun 29, 11:38 PM CDT	Severe Thunderstorm Warning	FGF	Benson	32 min
Jun 29, 11:47 PM CDT	Severe Thunderstorm Warning	FGF	Eddy	33 min
Jun 30, 12:19 AM CDT	Severe Thunderstorm Warning	FGF	Eddy	36 min
Jun 30, 12:45 AM CDT	Severe Thunderstorm Warning	FGF	Nelson	35 min
Jun 30, 2:17 AM CDT	Severe Thunderstorm Warning	FGF	Nelson	33 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.