Alert archive / North Dakota / Tornado Warnings in 2015

Tornado Warning 53, NWS Grand Forks, ND

July 23, 20154 counties in North Dakota

NWS Grand Forks, ND issued this tornado warning at Jul 23, 2015, 11:14 PM CDT for 4 counties in North Dakota. It was in force for 46 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 23, 2015, 11:14 PM CDT (04:14 UTC)
Expired: Jul 24, 2015, 12:00 AM CDT
In force: 46 min
Issued by: NWS Grand Forks, ND
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.0 in

Counties Grand Forks County, ND, Nelson County, ND, Steele County, ND, Traill County, ND

The radar

The Fargo/Grand Forks radar (KMVX), 35 km from the middle of the area, began a volume at 04:15 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 23, 3:58 PM CDT	Severe Thunderstorm Watch	SPC	11 hr

The nearest sounding before it

Bismarck Municip, ND (KBIS), launched 00:00Z, 4.2 hours before the alert went out and 252 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: 1074 J/kg
Mixed-layer CIN: -71 J/kg
Mixed-layer LCL: 2327 m above ground
0-6 km bulk shear: 25 kt
0-1 km storm-relative helicity: 74 m²/s²
0-3 km storm-relative helicity: 137 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.0

Open this sounding in Storm Lab

The text

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

440 
WFUS53 KFGF 240414
TORFGF
NDC035-063-091-097-240500-
/O.NEW.KFGF.TO.W.0053.150724T0414Z-150724T0500Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
1114 PM CDT THU JUL 23 2015

THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHWESTERN TRAILL COUNTY IN SOUTHEASTERN NORTH DAKOTA...
  NORTHEASTERN STEELE COUNTY IN SOUTHEASTERN NORTH DAKOTA...
  SOUTHEASTERN NELSON COUNTY IN NORTHEASTERN NORTH DAKOTA...
  SOUTHWESTERN GRAND FORKS COUNTY IN NORTHEASTERN NORTH DAKOTA...

* UNTIL MIDNIGHT CDT
    
* AT 1113 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A
  TORNADO WAS LOCATED OVER LOGAN CENTER...OR 36 MILES WEST OF GRAND
  FORKS...MOVING EAST AT 50 MPH.

  HAZARD...TORNADO. 

  SOURCE...RADAR INDICATED ROTATION. 

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

* THIS DANGEROUS STORM WILL BE NEAR...
  KEMPTON AROUND 1125 PM CDT.
  NORTHWOOD AROUND 1130 PM CDT.
  HOLMES AROUND 1145 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 OFFICE IN
GRAND FORKS.

&&

LAT...LON 4767 9795 4785 9794 4786 9729 4761 9724
TIME...MOT...LOC 0413Z 272DEG 43KT 4776 9783 

TORNADO...RADAR INDICATED
HAIL...0.00IN

$$

TG/DK

2 follow-up statements

609 
WWUS53 KFGF 240436
SVSFGF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
1136 PM CDT THU JUL 23 2015

NDC063-240446-
/O.CAN.KFGF.TO.W.0053.000000T0000Z-150724T0500Z/
NELSON ND-
1136 PM CDT THU JUL 23 2015

...THE TORNADO WARNING FOR SOUTHEASTERN NELSON COUNTY IS CANCELLED...
    
THE TORNADIC THUNDERSTORM WHICH PROMPTED THE WARNING HAS MOVED OUT 
OF THE WARNED AREA.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 100 AM CDT FOR
EASTERN NORTH DAKOTA.

LAT...LON 4764 9763 4786 9755 4786 9729 4761 9724
TIME...MOT...LOC 0436Z 273DEG 34KT 4775 9753 

$$

NDC035-091-097-240500-
/O.CON.KFGF.TO.W.0053.000000T0000Z-150724T0500Z/
TRAILL ND-STEELE ND-GRAND FORKS ND-
1136 PM CDT THU JUL 23 2015

...A TORNADO WARNING REMAINS IN EFFECT UNTIL MIDNIGHT CDT FOR
NORTHWESTERN TRAILL...NORTHEASTERN STEELE AND SOUTH CENTRAL GRAND
FORKS COUNTIES...
    
AT 1136 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO
WAS LOCATED OVER NORTHWOOD...OR 24 MILES SOUTHWEST OF GRAND FORKS...
MOVING EAST AT 40 MPH.

HAZARD...TORNADO. 

SOURCE...RADAR INDICATED ROTATION. 

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

THIS DANGEROUS STORM WILL BE NEAR...
  HATTON AROUND 1140 PM CDT.
  HOLMES AROUND 1155 PM CDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF A TORNADO OR OTHER SEVERE WEATHER IS SPOTTED...REPORT IT TO THE
NATIONAL WEATHER SERVICE OR YOUR LOCAL NEAREST LAW ENFORCEMENT AGENCY
WHO WILL SEND YOUR REPORT. THIS ACT MAY SAVE LIVES OF OTHERS IN THE
PATH OF DANGEROUS WEATHER.

&&

LAT...LON 4764 9763 4786 9755 4786 9729 4761 9724
TIME...MOT...LOC 0436Z 273DEG 34KT 4775 9753 

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

$$

TG/DK

535 
WWUS53 KFGF 240458
SVSFGF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
1158 PM CDT THU JUL 23 2015

NDC035-091-097-240508-
/O.EXP.KFGF.TO.W.0053.000000T0000Z-150724T0500Z/
TRAILL ND-STEELE ND-GRAND FORKS ND-
1158 PM CDT THU JUL 23 2015

...THE TORNADO WARNING FOR NORTHWESTERN TRAILL...NORTHEASTERN STEELE
AND SOUTH CENTRAL GRAND FORKS COUNTIES WILL EXPIRE AT 1200 AM CDT...
        
THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE AREA.
THEREFORE THE WARNING WILL BE ALLOWED TO EXPIRE.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 100 AM CDT FOR
EASTERN NORTH DAKOTA.

LAT...LON 4764 9763 4786 9755 4786 9729 4761 9724
TIME...MOT...LOC 0457Z 272DEG 43KT 4775 9753 

$$

TG/DK

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 23, 7:25 PM CDT	Severe Thunderstorm Warning	FGF	Towner	65 min
Jul 23, 7:39 PM CDT	Special Weather Statement	FGF	Cavalier	66 min
Jul 23, 8:25 PM CDT	Severe Thunderstorm Warning	FGF	Cavalier, Ramsey, Towner	65 min
Jul 23, 8:38 PM CDT	Severe Thunderstorm Warning	FGF	Benson	67 min
Jul 23, 8:48 PM CDT	Special Weather Statement	FGF	Cavalier, Pembina	42 min
Jul 23, 9:07 PM CDT	Severe Thunderstorm Warning	FGF	Cavalier, Pembina, Walsh	53 min
Jul 23, 9:20 PM CDT	Areal Flood Advisory	FGF	Benson, Ramsey, Towner	9 hr
Jul 23, 9:23 PM CDT	Severe Thunderstorm Warning	FGF	Benson, Cavalier, Ramsey, Towner	52 min
Jul 23, 9:54 PM CDT	Severe Thunderstorm Warning	FGF	Barnes, Benson, Eddy, Griggs, Nelson	66 min
Jul 23, 10:09 PM CDT	Severe Thunderstorm Warning	FGF	Benson, Cavalier, Eddy, Nelson, Pembina, Ramsey and 1 more	66 min
Jul 23, 10:40 PM CDT	Severe Thunderstorm Warning	FGF	Barnes, Cass, Grand Forks, Griggs, Nelson, Steele and 1 more	65 min
Jul 23, 10:58 PM CDT	Severe Thunderstorm Warning	FGF	Barnes, Cass, Ransom	47 min
Jul 23, 11:33 PM CDT	Tornado Warning	FGF	Steele, Traill	42 min
Jul 23, 11:40 PM CDT	Severe Thunderstorm Warning	FGF	Barnes, Cass, Grand Forks, Steele, Traill	65 min
Jul 24, 12:34 AM CDT	Severe Thunderstorm Warning	FGF	Cass	56 min

Nearby

Tornado Warnings in North Dakota, 2015 Every tornado warning in 2015 Tornadoes in 2015

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.