Alert archive / North Dakota / Tornado Warnings in 2014

Tornado Warning 20, NWS Grand Forks, ND

September 4, 2014Barnes County, North Dakota

NWS Grand Forks, ND issued this tornado warning at Sep 4, 2014, 3:13 AM CDT for Barnes County, North Dakota. It was in force for 47 min. 3 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: Sep 4, 2014, 3:13 AM CDT (08:13 UTC)
Expired: Sep 4, 2014, 4:00 AM CDT
In force: 47 min
Issued by: NWS Grand Forks, ND
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 1.25 in

County Barnes County, ND

The radar

The Fargo/Grand Forks radar (KMVX), 92 km from the middle of the area, began a volume at 08:13 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
Sep 4, 3:15 AM CDT	TSTM WND GST 45	Valley City, ND
Sep 4, 3:26 AM CDT	TORNADO 0	10 Ssw Valley City, ND	A TORNADO TRACKED FOR A MILE OR SO... CROSSING STATE HIGHWAY 1 IN NORTHEAST SKANDIA TOWNSHIP TO AROUND 9 SSW OF VALLEY CITY BY 328 AM CDT. A 30 YARD WIDE PATH WAS EVIDENT IN A NEARBY FIELD AND SEVERAL LARGE BRANCHES WERE BROKEN DOWN IN A SHELTER BELT AND TOSSE
Sep 4, 3:48 AM CDT	HAIL 2.5	8 S Eckelson, ND	RELAYED VIA MEDIA PARTNER FACEBOOK PICTURE

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
Sep 4, 1:48 AM CDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Bismarck Municip, ND (KBIS), launched 00:00Z, 8.2 hours before the alert went out and 200 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: 1433 J/kg
Mixed-layer CIN: -54 J/kg
Mixed-layer LCL: 1425 m above ground
0-6 km bulk shear: 69 kt
0-1 km storm-relative helicity: 155 m²/s²
0-3 km storm-relative helicity: 474 m²/s²
Significant tornado parameter: 1.3
Supercell composite: 8.3

Open this sounding in Storm Lab

The text

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

945 
WFUS53 KFGF 040813
TORFGF
NDC003-040900-
/O.NEW.KFGF.TO.W.0020.140904T0813Z-140904T0900Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
313 AM CDT THU SEP 4 2014

THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHERN BARNES COUNTY IN SOUTHEAST NORTH DAKOTA...

* UNTIL 400 AM CDT

* AT 310 AM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A
  TORNADO WAS LOCATED 9 MILES NORTH OF LITCHVILLE...AND MOVING EAST
  AT 25 MPH.

  HAZARD...TORNADO AND HALF DOLLAR SIZE HAIL.

  SOURCE...RADAR INDICATED ROTATION.

  IMPACT...EXPECT DAMAGE TO MOBILE HOMES...ROOFS AND VEHICLES.

* THIS DANGEROUS STORM WILL BE NEAR...
  VALLEY CITY AROUND 345 AM CDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TO REPORT SEVERE WEATHER CONTACT YOUR NEAREST LAW ENFORCEMENT AGENCY.
THEY WILL SEND YOUR REPORT TO THE NATIONAL WEATHER SERVICE IN GRAND
FORKS.

&&

LAT...LON 4707 9786 4663 9781 4666 9840 4694 9844
TIME...MOT...LOC 0814Z 252DEG 20KT 4679 9821

TORNADO...RADAR INDICATED
HAIL...1.25IN

$$

JR

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 4, 2:19 AM CDT	Special Weather Statement	FGF	Traill	56 min
Sep 4, 2:36 AM CDT	Severe Thunderstorm Warning	FGF	Cass, Ransom, Richland	54 min
Sep 4, 2:40 AM CDT	Severe Thunderstorm Warning	FGF	Barnes, Cass	65 min
Sep 4, 2:48 AM CDT	Severe Thunderstorm Warning	FGF	Barnes, Cass, Ransom	42 min
Sep 4, 3:28 AM CDT	Severe Thunderstorm Warning	FGF	Cass, Ransom, Richland	62 min
Sep 4, 3:51 AM CDT	Severe Thunderstorm Warning	FGF	Barnes, Cass, Ransom, Richland	54 min
Sep 4, 3:55 AM CDT	Flash Flood Warning	FGF	Barnes, Cass, Ransom, Richland	8 hr
Sep 4, 4:02 AM CDT	Severe Thunderstorm Warning	FGF	Cass, Richland	58 min
Sep 4, 4:10 AM CDT	Tornado Warning	FGF	Cass, Ransom, Richland	39 min

Nearby

Tornado Warnings in North Dakota, 2014 Every tornado warning in 2014 Tornadoes in 2014

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.