Alert archive / North Dakota / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 112, NWS Grand Forks, ND

July 5, 2000Sargent County, North Dakota

NWS Grand Forks, ND issued this severe thunderstorm warning at Jul 5, 2000, 1:21 AM CDT for Sargent County, North Dakota. It was in force for 29 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: Jul 5, 2000, 1:21 AM CDT (06:21 UTC)
Expired: Jul 5, 2000, 1:50 AM CDT
In force: 29 min
Issued by: NWS Grand Forks, ND
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Sargent County, ND

The radar

The Aberdeen radar (KABR), 103 km from the middle of the area, began a volume at 06:24 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

Time	Report	Where	Remark
Jul 5, 1:25 AM CDT	Hail 0.75	Forman, 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

Aberdeen, SD (KABR), launched 00:00Z, 6.4 hours before the alert went out and 155 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: 1885 J/kg
Mixed-layer CIN: -23 J/kg
Mixed-layer LCL: 1396 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: 78 m²/s²
0-3 km storm-relative helicity: 112 m²/s²
Significant tornado parameter: 0.4
Supercell composite: 5.6

Open this sounding in Storm Lab

The text

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

000 
WUUS53 KFGF 050621
SVRFAR
NDC081-050651-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE EASTERN ND-GRAND FORKS
121 AM CDT WED JUL 5 2000

THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EASTERN SARGENT COUNTY IN SOUTHEAST NORTH DAKOTA

* UNTIL 150 AM CDT

* AT 119 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 3 MILES NORTHEAST OF FORMAN...OR ABOUT 42 MILES
  NORTHWEST OF SISSETON...MOVEMENT WAS TO THE EAST AT 20 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  RUTLAND AT 125 AM CDT...
  CAYUGA AT 145 AM CDT...
  HAMLIN AT 150 AM CDT...

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

LAT...LON 4621 9772 4604 9768 4605 9726 4626 9729

NNNN

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, 9:34 PM CDT	Severe Thunderstorm Warning	FGF	Grand Forks	31 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

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.