Alert archive / North Dakota / Tornado Warnings in 2016

Tornado Warning 24, NWS Grand Forks, ND

August 3, 2016Cavalier County, Towner County, North Dakota

NWS Grand Forks, ND issued this tornado warning at Aug 3, 2016, 6:43 PM CDT for Cavalier County, Towner County, North Dakota. It was in force for 47 min. 6 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
Aug 3, 2016, 6:43 PM CDT (23:43 UTC)
Expired
Aug 3, 2016, 7:30 PM CDT
In force
47 min
Issued by
NWS Grand Forks, ND
Area
Storm-based polygon
Tornado
Radar indicated
Hail
1.5 in

Counties Cavalier County, ND, Towner County, ND

The radar

The Fargo/Grand Forks radar (KMVX), 160 km from the middle of the area, began a volume at 23:45 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

TimeReportWhereRemark
Aug 3, 6:47 PM CDTHAIL 1.55 Ese Egeland, NDLARGE HAIL AND VERY STRONG WINDS ACROSS NORTHERN VICTOR TOWNSHIP.
Aug 3, 6:52 PM CDTTSTM WND DMG2 Sw Munich, NDNUMEROUS LARGE TREE BRANCHES AND LIMBS BROKEN DOWN IM SHELTER BELTS ACROSS TRIER AND SEIVERT TOWNSHIPS.
Aug 3, 7:31 PM CDTTSTM WND DMGLangdon, NDA FEW LARGE TREE BRANCHES AND LIMBS BROKEN DOWN AROUND TOWN. AT LEAST ON 12 INCH DIAMETER TREE SNAPPED NEAR THE GROUND.
Aug 3, 7:31 PM CDTTSTM WND DMGLangdon, NDA FEW LARGE TREE BRANCHES AND LIMBS BROKEN DOWN AROUND TOWN. AT LEAST ONE 12 INCH DIAMETER TREE SNAPPED NEAR THE GROUND.
Aug 3, 7:33 PM CDTTSTM WND GST 581 E Langdon, NDPEAK WIND MEASURED AT A PERSONAL WEATHER STATION.
Aug 3, 7:38 PM CDTHAIL 1Langdon, NDQUARTER SIZED HAIL AND SMALL WITH HEAVY RAIN

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.

IssuedProductOfficeLasted
Aug 3, 3:38 PM CDTTornado WatchSPC7 hr

The nearest sounding before it

Bismarck Municip, ND (KBIS), launched 12:00Z, 11.7 hours before the alert went out and 274 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-pSkew-T log-p diagram, Bismarck Municip, ND at 12:00Z on 2016-08-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 58 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Bismarck Municip, ND at 12:00Z on 2016-08-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 51 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
58 J/kg
Mixed-layer CIN
-522 J/kg
Mixed-layer LCL
1927 m above ground
0-6 km bulk shear
20 kt
0-1 km storm-relative helicity
51 m²/s²
0-3 km storm-relative helicity
150 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

759 
WFUS53 KFGF 032343
TORFGF
NDC019-095-040030-
/O.NEW.KFGF.TO.W.0024.160803T2343Z-160804T0030Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
643 PM CDT WED AUG 3 2016

THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A

* TORNADO WARNING FOR...
  EAST CENTRAL TOWNER COUNTY IN NORTHEASTERN NORTH DAKOTA...
  CENTRAL CAVALIER COUNTY IN NORTHEASTERN NORTH DAKOTA...

* UNTIL 730 PM CDT
    
* AT 642 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A
  TORNADO WAS LOCATED NEAR MUNICH...OR 24 MILES WEST OF
  LANGDON...MOVING EAST AT 45 MPH.

  HAZARD...TORNADO AND PING PONG BALL SIZE HAIL. 

  SOURCE...RADAR INDICATED ROTATION. 

  IMPACT...FLYING DEBRIS WILL BE DANGEROUS TO THOSE CAUGHT WITHOUT
           SHELTER. MOBILE HOMES WILL BE DAMAGED OR DESTROYED.
           DAMAGE TO ROOFS...WINDOWS...AND VEHICLES WILL OCCUR. TREE
           DAMAGE IS LIKELY. 

* THIS DANGEROUS STORM WILL BE NEAR...
  MUNICH AROUND 645 PM CDT. 
  ALSEN AROUND 655 PM CDT. 
  LOMA AROUND 705 PM CDT. 
  DRESDEN AROUND 710 PM CDT. 
  LANGDON AROUND 715 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 4897 9828 4855 9813 4854 9824 4855 9901
      4883 9905
TIME...MOT...LOC 2342Z 262DEG 37KT 4868 9890 

TORNADO...RADAR INDICATED
HAIL...1.50IN

$$

JAM
1 follow-up statement
085 
WWUS53 KFGF 040021
SVSFGF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
721 PM CDT WED AUG 3 2016

NDC019-095-040030-
/O.EXP.KFGF.TO.W.0024.000000T0000Z-160804T0030Z/
TOWNER ND-CAVALIER ND-
721 PM CDT WED AUG 3 2016

...THE TORNADO WARNING FOR EAST CENTRAL TOWNER AND CENTRAL CAVALIER
COUNTIES WILL EXPIRE AT 730 PM CDT...
    
THE TORNADO THREAT HAS DIMINISHED AND THE TORNADO WARNING HAS BEEN
CANCELLED. HOWEVER...LARGE HAIL AND DAMAGING WINDS REMAIN LIKELY AND
A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR THE AREA.
HOWEVER GUSTY WINDS ARE STILL POSSIBLE WITH THIS THUNDERSTORM.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1100 PM CDT FOR NORTHEASTERN
NORTH DAKOTA.

LAT...LON 4897 9828 4855 9813 4854 9824 4855 9901
      4883 9905
TIME...MOT...LOC 0019Z 262DEG 37KT 4868 9890 

$$

KNUTSVIG

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 3, 4:30 PM CDTSevere Thunderstorm WarningFGFBenson, Towner60 min
Aug 3, 5:17 PM CDTSevere Thunderstorm WarningFGFCavalier, Towner58 min
Aug 3, 5:31 PM CDTTornado WarningFGFTowner44 min
Aug 3, 6:14 PM CDTTornado WarningFGFCavalier, Towner46 min
Aug 3, 6:48 PM CDTSevere Thunderstorm WarningFGFBenson, Cavalier, Ramsey, Towner42 min

Nearby

Tornado Warnings in North Dakota, 2016Every tornado warning in 2016Tornadoes in 2016

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.