Alert archive / North Dakota / Tornado Warnings in 2013

Tornado Warning 4, NWS Grand Forks, ND

June 20, 2013Barnes County, North Dakota

NWS Grand Forks, ND issued this tornado warning at Jun 20, 2013, 5:58 PM CDT for Barnes County, North Dakota. It was in force for 47 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 20, 2013, 5:58 PM CDT (22:58 UTC)
Expired: Jun 20, 2013, 6:45 PM CDT
In force: 47 min
Issued by: NWS Grand Forks, ND
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.75 in

County Barnes County, ND

The radar

The Fargo/Grand Forks radar (KMVX), 93 km from the middle of the area, began a volume at 23:00 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 20, 6:11 PM CDT	TORNADO 0	5 Wsw Rogers, ND	SPOTTER WATCHED SMALL ROPE TORNADO ON THE GROUND LIFT BACK UP.
Jun 20, 6:20 PM CDT	TORNADO	Rogers, ND	SPOTTER WATCHED SMALL ROPE TORNADO ON THE GROUND LIFT BACK UP.

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 20, 3:26 PM CDT	Severe Thunderstorm Watch	SPC	9 hr

The nearest sounding before it

Bismarck Municip, ND (KBIS), launched 12:00Z, 11.0 hours before the alert went out and 183 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: 921 J/kg
Mixed-layer CIN: -317 J/kg
Mixed-layer LCL: 830 m above ground
0-6 km bulk shear: 21 kt
0-1 km storm-relative helicity: 246 m²/s²
0-3 km storm-relative helicity: 414 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 2.1

Open this sounding in Storm Lab

The text

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

379 
WFUS53 KFGF 202258
TORFGF
NDC003-202345-
/O.NEW.KFGF.TO.W.0004.130620T2258Z-130620T2345Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
558 PM CDT THU JUN 20 2013

THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A

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

* UNTIL 645 PM CDT

* AT 555 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A
  TORNADO WAS LOCATED 6 MILES SOUTHWEST OF LEAL...AND MOVING EAST AT
  20 MPH.

  HAZARD...TORNADO.

  SOURCE...RADAR INDICATED ROTATION.

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

* THIS DANGEROUS STORM WILL BE NEAR...
  LEAL AND SANBORN AROUND 610 PM CDT.
  ROGERS AROUND 625 PM CDT.
  BALD HILL DAM AROUND 635 PM CDT.
  SIBLEY AROUND 645 PM 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 4711 9848 4722 9795 4695 9794 4692 9845
      4697 9845 4698 9847
TIME...MOT...LOC 2258Z 249DEG 18KT 4704 9838

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$

HOPKINS

2 follow-up statements

411 
WWUS53 KFGF 202324
SVSFGF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
624 PM CDT THU JUN 20 2013

NDC003-202345-
/O.CON.KFGF.TO.W.0004.000000T0000Z-130620T2345Z/
BARNES ND-
624 PM CDT THU JUN 20 2013

...A TORNADO WARNING REMAINS IN EFFECT FOR NORTHWESTERN BARNES COUNTY
UNTIL 645 PM CDT...

AT 620 PM CDT...A CONFIRMED TORNADO WAS LOCATED NEAR ROGERS...AND
MOVING EAST AT 20 MPH.

HAZARD...TORNADO.

SOURCE...WEATHER SPOTTERS CONFIRMED TORNADO.

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

THIS TORNADIC STORM WILL BE NEAR...
  BALD HILL DAM AROUND 635 PM 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 4711 9848 4722 9795 4695 9794 4692 9845
      4697 9845 4698 9847
TIME...MOT...LOC 2324Z 249DEG 18KT 4709 9820

TORNADO...OBSERVED
HAIL...<.75IN

$$

HOPKINS

675 
WWUS53 KFGF 202343
SVSFGF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
643 PM CDT THU JUN 20 2013

NDC003-202353-
/O.EXP.KFGF.TO.W.0004.000000T0000Z-130620T2345Z/
BARNES ND-
643 PM CDT THU JUN 20 2013

...THE TORNADO WARNING FOR NORTHWESTERN BARNES COUNTY WILL EXPIRE AT
645 PM CDT...

THE TORNADO THREAT HAS DIMINISHED...THEREFORE THE TORNADO WARNING HAS
EXPIRED. HOWEVER...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT
FOR THE AREA.  HOWEVER...GUSTY WINDS ARE STILL POSSIBLE WITH THIS
THUNDERSTORM.

LAT...LON 4711 9848 4722 9795 4695 9794 4692 9845
      4697 9845 4698 9847
TIME...MOT...LOC 2343Z 071DEG 29KT 4699 9829

$$
SPEICHER

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 19, 7:45 PM CDT	Special Weather Statement	FGF	Benson	60 min
Jun 19, 11:16 PM CDT	Severe Thunderstorm Warning	FGF	Sargent	44 min
Jun 19, 11:31 PM CDT	Special Weather Statement	FGF	Sargent	59 min
Jun 20, 12:23 AM CDT	Special Weather Statement	FGF	Ransom	37 min
Jun 20, 12:31 AM CDT	Severe Thunderstorm Warning	FGF	Richland, Sargent	44 min
Jun 20, 2:48 AM CDT	Areal Flood Advisory	FGF	Ransom, Richland, Sargent	33 hr
Jun 20, 3:58 AM CDT	Special Weather Statement	FGF	Sargent	32 min
Jun 20, 4:15 AM CDT	Flash Flood Warning	FGF	Ransom, Richland, Sargent	8 hr
Jun 20, 10:41 AM CDT	Severe Thunderstorm Warning	FGF	Benson, Ramsey, Towner	49 min
Jun 20, 11:16 AM CDT	Special Weather Statement	FGF	Nelson	44 min
Jun 20, 11:44 AM CDT	Areal Flood Advisory	FGF	Ransom, Richland, Sargent	24 hr
Jun 20, 12:28 PM CDT	Special Weather Statement	FGF	Nelson	62 min
Jun 20, 1:18 PM CDT	Flash Flood Watch	FGF	Barnes, Benson, Cass, Cavalier, Eddy, Grand Forks and 11 more	39 hr
Jun 20, 3:51 PM CDT	Severe Thunderstorm Warning	FGF	Griggs	39 min
Jun 20, 5:16 PM CDT	Severe Thunderstorm Warning	FGF	Cass, Steele, Traill	44 min
Jun 20, 5:54 PM CDT	Severe Thunderstorm Warning	FGF	Barnes	51 min
Jun 20, 6:05 PM CDT	Severe Thunderstorm Warning	FGF	Cass, Traill	40 min
Jun 20, 6:29 PM CDT	Severe Thunderstorm Warning	FGF	Cass, Traill	46 min
Jun 20, 6:42 PM CDT	Severe Thunderstorm Warning	FGF	Barnes, Cass, Griggs, Steele	48 min

Nearby

Tornado Warnings in North Dakota, 2013 Every tornado warning in 2013 Tornadoes in 2013

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.