Alert archive / North Dakota / Tornado Warnings in 2007

Tornado Warning 28, NWS Grand Forks, ND

July 15, 2007Ransom County, North Dakota

NWS Grand Forks, ND issued this tornado warning at Jul 15, 2007, 9:49 PM CDT for Ransom County, North Dakota. It was in force for 26 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Jul 15, 2007, 9:49 PM CDT (02:49 UTC)
Expired: Jul 15, 2007, 10:15 PM CDT
In force: 26 min
Issued by: NWS Grand Forks, ND
Area: Counties, with a storm outline in the text

County Ransom County, ND

The radar

The Fargo/Grand Forks radar (KMVX), 114 km from the middle of the area, began a volume at 02:51 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 watch it was issued in

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

Issued	Product	Office	Lasted
Jul 15, 5:49 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Aberdeen, SD (KABR), launched 00:00Z, 2.8 hours before the alert went out and 194 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 2083 m above ground
0-6 km bulk shear: 45 kt
0-1 km storm-relative helicity: 30 m²/s²
0-3 km storm-relative helicity: 160 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.

000 
WFUS53 KFGF 160248
TORFGF
NDC073-160315-
/O.NEW.KFGF.TO.W.0028.070716T0249Z-070716T0315Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
949 PM CDT SUN JUL 15 2007

THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A

* TORNADO WARNING FOR...
  EASTERN RANSOM COUNTY IN SOUTHEAST NORTH DAKOTA...

* UNTIL 1015 PM CDT

* AT 947 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO OVER SHELDON...
  OR 34 MILES SOUTHEAST OF VALLEY CITY...MOVING TO THE SOUTHEAST AT
  40 MPH.

* THE TORNADO WILL BE NEAR...
  VENLO AT 955 PM CDT...

IF YOU ARE IN THE PATH OF THIS TORNADO ABANDON CARS AND MOBILE HOMES
FOR A STURDY BUILDING.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 100 AM CDT MONDAY
MORNING FOR NORTHWESTERN MINNESOTA.

LAT...LON 4662 9742 4657 9767 4630 9739 4644 9730

$$

JK

1 follow-up statement

000 
WWUS53 KFGF 160300
SVSFGF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
1000 PM CDT SUN JUL 15 2007

NDC073-160315-
/O.CON.KFGF.TO.W.0028.000000T0000Z-070716T0315Z/
RANSOM ND-
1000 PM CDT SUN JUL 15 2007

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1015 PM CDT FOR EASTERN
RANSOM COUNTY...

AT 951 PM CDT...WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE
THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THE TORNADO WAS LOCATED
2 MILES NORTHEAST OF VENLO...OR 38 MILES SOUTHWEST OF FARGO...MOVING
TO THE SOUTHEAST AT 50 MPH.

IF YOU ARE IN THE PATH OF THIS TORNADO ABANDON CARS AND MOBILE HOMES
FOR A STURDY BUILDING.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 100 AM CDT MONDAY
MORNING FOR NORTHWESTERN MINNESOTA.

LAT...LON 4662 9742 4657 9767 4630 9739 4641 9729

$$

JK

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 15, 7:20 PM CDT	Tornado Warning	FGF	Cass, Ransom	40 min
Jul 15, 7:29 PM CDT	Severe Thunderstorm Warning	FGF	Ramsey, Towner	61 min
Jul 15, 7:58 PM CDT	Tornado Warning	FGF	Ransom, Richland	23 min
Jul 15, 8:26 PM CDT	Severe Thunderstorm Warning	FGF	Benson, Eddy	49 min
Jul 15, 8:40 PM CDT	Severe Thunderstorm Warning	FGF	Barnes, Cass, Steele	65 min
Jul 15, 8:45 PM CDT	Severe Thunderstorm Warning	FGF	Cass, Traill	60 min
Jul 15, 9:29 PM CDT	Tornado Warning	FGF	Cass	31 min
Jul 15, 10:12 PM CDT	Tornado Warning	FGF	Ransom, Richland, Sargent	48 min

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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.