Alert archive / North Dakota / Tornado Warnings in 2007

Tornado Warning 16, NWS Grand Forks, ND

June 17, 2007Nelson County, Walsh County, North Dakota

NWS Grand Forks, ND issued this tornado warning at Jun 17, 2007, 9:35 PM CDT for Nelson County, Walsh County, North Dakota. It was in force for 43 min. 2 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Jun 17, 2007, 9:35 PM CDT (02:35 UTC)
Expired: Jun 17, 2007, 10:18 PM CDT
In force: 43 min
Issued by: NWS Grand Forks, ND
Area: Counties, with a storm outline in the text

Counties Nelson County, ND, Walsh County, ND

The radar

The Fargo/Grand Forks radar (KMVX), 92 km from the middle of the area, began a volume at 02:37 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 17, 9:42 PM CDT	HAIL 0.75	3 Ene Whitman, ND
Jun 17, 9:50 PM CDT	TORNADO 0	3 Wnw Dahlen, ND	TWO BRIEF TOUCHDOWNS OBSERVED IN OPEN FIELD.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jun 17, 4:18 PM CDT	Tornado Watch	SPC	8 hr

The nearest sounding before it

Bismarck Municip, ND (KBIS), launched 00:00Z, 2.6 hours before the alert went out and 247 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: 2169 J/kg
Mixed-layer CIN: -24 J/kg
Mixed-layer LCL: 1314 m above ground
0-6 km bulk shear: 46 kt
0-1 km storm-relative helicity: -49 m²/s²
0-3 km storm-relative helicity: 77 m²/s²
Significant tornado parameter: 0.6
Supercell composite: 5.3

Open this sounding in Storm Lab

The text

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

000 
WFUS53 KFGF 180236
TORFGF
NDC063-099-180330-
/O.NEW.KFGF.TO.W.0016.070618T0235Z-070618T0330Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
935 PM CDT SUN JUN 17 2007

THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A

* TORNADO WARNING FOR...
  NORTH CENTRAL NELSON COUNTY IN NORTHEAST NORTH DAKOTA...
  EXTREME SOUTHWESTERN WALSH COUNTY IN NORTHEAST NORTH DAKOTA...

* UNTIL 1030 PM CDT

* AT 933 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR WHITMAN...
  OR 35 MILES EAST OF DEVILS LAKE...MOVING TO THE EAST AT 20 MPH.

* THE TORNADO WILL BE NEAR...
  WHITMAN THROUGH 945 PM CDT...
  DAHLEN BY 1015 PM CDT...

IF YOU ARE IN THE PATH OF A TORNADO THE SAFEST PLACE IS A BASEMENT.
GET UNDER A STAIRWAY OR A PIECE OF STURDY FURNITURE.

A TORNADO WATCH REMAINS IN EFFECT UNTIL MIDNIGHT CDT MONDAY MORNING
FOR NORTHWESTERN MINNESOTA. A TORNADO WATCH ALSO REMAINS IN EFFECT
UNTIL MIDNIGHT CDT MONDAY MORNING FOR NORTHWESTERN MINNESOTA.

LAT...LON 4818 9825 4808 9822 4811 9794 4823 9797

$$

GUST

2 follow-up statements

000 
WWUS53 KFGF 180301
SVSFGF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
1000 PM CDT SUN JUN 17 2007

NDC063-099-180330-
/O.CON.KFGF.TO.W.0016.000000T0000Z-070618T0330Z/
NELSON ND-WALSH ND-
1000 PM CDT SUN JUN 17 2007

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1030 PM CDT FOR EXTREME
NORTHEASTERN NELSON AND SOUTH CENTRAL WALSH COUNTIES...

AT 957 PM CDT...WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE
THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THE TORNADO WAS LOCATED
4 MILES NORTH OF DAHLEN...OR 28 MILES SOUTHWEST OF GRAFTON...MOVING
TO THE NORTHEAST AT 30 MPH.

IF YOU ARE IN THE PATH OF A TORNADO THE SAFEST PLACE IS A BASEMENT.
GET UNDER A STAIRWAY OR A PIECE OF STURDY FURNITURE.

A TORNADO WATCH REMAINS IN EFFECT UNTIL MIDNIGHT CDT MONDAY MORNING 
FOR EASTERN NORTH DAKOTA.

LAT...LON 4820 9811 4813 9808 4816 9791 4820 9791
      4821 9783 4827 9787

$$

GUST

000 
WWUS53 KFGF 180318
SVSFGF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
1018 PM CDT SUN JUN 17 2007

NDC063-099-180328-
/O.CAN.KFGF.TO.W.0016.000000T0000Z-070618T0330Z/
NELSON ND-WALSH ND-
1018 PM CDT SUN JUN 17 2007

...THE TORNADO WARNING FOR EXTREME NORTHEASTERN NELSON AND SOUTH
CENTRAL WALSH COUNTIES IS CANCELLED...

AT 1018 PM CDT...THE TORNADO HAS DISSIPATED IN EXTREME NORTHEASTERN
NELSON AND SOUTH CENTRAL WALSH COUNTIES. SO THE WARNING HAS BEEN
CANCELLED.

A TORNADO WATCH REMAINS IN EFFECT UNTIL MIDNIGHT CDT MONDAY MORNING
FOR NORTHWESTERN MINNESOTA.

LAT...LON 4820 9811 4813 9808 4816 9791 4820 9791
      4821 9783 4827 9787

$$

GUST

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 17, 8:00 PM CDT	Severe Thunderstorm Warning	FGF	Ramsey	45 min
Jun 17, 9:25 PM CDT	Severe Thunderstorm Warning	FGF	Barnes, Griggs	46 min
Jun 17, 9:31 PM CDT	Severe Thunderstorm Warning	FGF	Nelson, Walsh	59 min
Jun 17, 9:55 PM CDT	Severe Thunderstorm Warning	FGF	Benson	65 min
Jun 17, 10:06 PM CDT	Tornado Warning	FGF	Benson	35 min
Jun 17, 10:13 PM CDT	Severe Thunderstorm Warning	FGF	Steele	40 min
Jun 17, 10:14 PM CDT	Flash Flood Warning	FGF	Barnes, Griggs, Steele	9 hr
Jun 17, 10:28 PM CDT	Severe Thunderstorm Warning	FGF	Ramsey	40 min
Jun 17, 11:28 PM CDT	Severe Thunderstorm Warning	FGF	Cass, Richland	62 min
Jun 18, 5:00 AM CDT	Wind Advisory	FGF	Barnes, Benson, Cass, Cavalier, Eddy, Grand Forks and 11 more	16 hr

Nearby

Tornado Warnings in North Dakota, 2007 Every tornado warning in 2007 Tornadoes in 2007

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.