Alert archive / Minnesota / Tornado Warnings in 2014

Tornado Warning 14, NWS Grand Forks, ND

June 21, 2014Polk County, Minnesota

NWS Grand Forks, ND issued this tornado warning at Jun 21, 2014, 8:24 PM CDT for Polk County, Minnesota. It was in force for 51 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
Jun 21, 2014, 8:24 PM CDT (01:24 UTC)
Expired
Jun 21, 2014, 9:15 PM CDT
In force
51 min
Issued by
NWS Grand Forks, ND
Area
Storm-based polygon
Tornado
Radar indicated
Hail
0.75 in

County Polk County, MN

The radar

The Fargo/Grand Forks radar (KMVX), 67 km from the middle of the area, began a volume at 01:26 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
Jun 21, 8:25 PM CDTTSTM WND DMG3 Ssw Greenview, MNNUMEROUS TREES AND LARGE TREE LIMBS SNAPPED IN FARMSTEADS AND SHELTER BELTS ACROSS NORTHERN SCANDIA AND FAR SOUTHERN HAMMOND TOWNSHIPS. PEAK WINDS ESTIMATED FROM 80 TO 90 MPH.
Jun 21, 8:35 PM CDTTORNADO 17 E Greenview, MNBRIEF AND INTERMITTENT TOUCHDOWNS LIKELY ALONG A 2 MILE TRACK TO NEAR MELVIN BY 842 PM CDT. TORNADO WRAPPED IN HEAVY RAIN...LARGE HAIL AND DAMAGING WINDS. NUMEROUS TREES WERE SNAPPED OR LARGE TREE LIMBS BROKEN DOWN ACROSS CHICOG WILDLIFE MANAGEMENT AREA. PEAK
Jun 21, 8:54 PM CDTFUNNEL CLOUD6 N Fertile, MNPERSISTENT WALL CLOUD WITH SMALL FUNNEL.

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
Jun 21, 3:37 PM CDTSevere Thunderstorm WatchSPC6 hr

The nearest sounding before it

International Fa, MN (KINL), launched 00:00Z, 1.4 hours before the alert went out and 258 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, International Fa, MN at 00:00Z on 2014-06-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 634 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, International Fa, MN at 00:00Z on 2014-06-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 114 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
634 J/kg
Mixed-layer CIN
-28 J/kg
Mixed-layer LCL
1499 m above ground
0-6 km bulk shear
38 kt
0-1 km storm-relative helicity
114 m²/s²
0-3 km storm-relative helicity
225 m²/s²
Significant tornado parameter
0.2
Supercell composite
2.7

Open this sounding in Storm Lab

The text

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

783 
WFUS53 KFGF 220124
TORFGF
MNC119-220215-
/O.NEW.KFGF.TO.W.0014.140622T0124Z-140622T0215Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
824 PM CDT SAT JUN 21 2014

THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTH CENTRAL POLK COUNTY IN NORTHWEST MINNESOTA...

* UNTIL 915 PM CDT

* AT 822 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A   
TORNADO WAS LOCATED 5 MILES NORTHWEST OF BELTRAMI...AND MOVING 
NORTHEAST AT 30 MPH.

  HAZARD...TORNADO.

  SOURCE...RADAR INDICATED ROTATION.

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

* THIS DANGEROUS STORM WILL BE NEAR...
  GREENVIEW AND BELTRAMI AROUND 830 PM CDT.
  MELVIN AROUND 845 PM CDT.
  MAPLE BAY AND DUGDALE AROUND 900 PM CDT.
  MENTOR AROUND 910 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 4749 9655 4750 9671 4765 9677 4775 9606
      4757 9597
TIME...MOT...LOC 0123Z 254DEG 27KT 4759 9661

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

$$

DTR
2 follow-up statements
357 
WWUS53 KFGF 220148
SVSFGF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
848 PM CDT SAT JUN 21 2014

MNC119-220215-
/O.CON.KFGF.TO.W.0014.000000T0000Z-140622T0215Z/
POLK MN-
848 PM CDT SAT JUN 21 2014

...A TORNADO WARNING REMAINS IN EFFECT FOR SOUTH CENTRAL POLK COUNTY
UNTIL 915 PM CDT...


AT 844 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO
WAS LOCATED NEAR MELVIN...AND MOVING EAST AT 35 MPH.

HAZARD...TORNADO AND GOLF BALL SIZE HAIL.

SOURCE...RADAR INDICATED ROTATION.

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

THE DANGEROUS STORM WILL BE NEAR...
  MENTOR AROUND 900 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 4749 9655 4750 9671 4765 9677 4775 9606
      4757 9597
TIME...MOT...LOC 0148Z 254DEG 30KT 4765 9628

TORNADO...RADAR INDICATED
HAIL...1.75IN

$$

DTR
800 
WWUS53 KFGF 220211
SVSFGF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
911 PM CDT SAT JUN 21 2014

MNC119-220221-
/O.EXP.KFGF.TO.W.0014.000000T0000Z-140622T0215Z/
POLK MN-
911 PM CDT SAT JUN 21 2014

...THE TORNADO WARNING FOR SOUTH CENTRAL POLK COUNTY WILL EXPIRE AT
915 PM CDT...

THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR PROPERTY.
THE STORM WAS LOCATED OVER MENTOR AND SPOTTERS AND RADAR INDICATE 
THE CIRCULATION HAS WEAKENED SIGNIFICANTLY.

LAT...LON 4749 9655 4750 9671 4765 9677 4775 9606
      4757 9597
TIME...MOT...LOC 0211Z 254DEG 30KT 4769 9600

$$

DTR

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 21, 7:49 PM CDTSevere Thunderstorm WarningFGFNorman, Polk26 min
Jun 21, 8:17 PM CDTSevere Thunderstorm WarningFGFPolk43 min

Nearby

Tornado Warnings in Minnesota, 2014Every tornado warning in 2014Tornadoes 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.