Alert archive / Minnesota / Severe Thunderstorm Warnings in 2018

Severe Thunderstorm Warning 49, NWS Grand Forks, ND

June 15, 2018Clay County, Minnesota; Cass County, North Dakota

NWS Grand Forks, ND issued this severe thunderstorm warning at Jun 15, 2018, 1:55 AM CDT for Clay County, Minnesota; Cass County, North Dakota. It was in force for 34 min. 7 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 15, 2018, 1:55 AM CDT (06:55 UTC)
Expired
Jun 15, 2018, 2:29 AM CDT
In force
34 min
Issued by
NWS Grand Forks, ND
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Clay County, MN, Cass County, ND

The radar

The Fargo/Grand Forks radar (KMVX), 85 km from the middle of the area, began a volume at 06:57 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 15, 2:00 AM CDTTSTM WND DMGFargo, NDPUBLIC REPORTS LARGE TREE BRANCHES DOWN. TIME ESTIMATED FROM RADAR.
Jun 15, 2:00 AM CDTHAIL 0.52 S West Fargo, NDPEA TO MARBLE SIZED HAIL NEAR VETERANS BLVD AND 32ND AVE S
Jun 15, 2:00 AM CDTHAIL 1Horace, NDVIA LOCAL MEDIA FACEBOOK PAGE
Jun 15, 2:00 AM CDTHAIL 1.5Horace, NDVIA WDAY TWITTER
Jun 15, 2:07 AM CDTHAIL 11 S Moorhead, MN
Jun 15, 2:07 AM CDTHAIL 12 Sse Fargo, NDMOSTLY PEA TO DIME SIZED WITH QUARTERS MIXED IN AND THE HAIL OCCURED FOR 10 MINUTES
Jun 15, 2:10 AM CDTHAIL 11 Nne Prairie Rose, ND

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Aberdeen, SD (KABR), launched 00:00Z, 6.9 hours before the alert went out and 259 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, Aberdeen, SD at 00:00Z on 2018-06-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3458 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Aberdeen, SD at 00:00Z on 2018-06-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 125 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
3458 J/kg
Mixed-layer CIN
-258 J/kg
Mixed-layer LCL
1475 m above ground
0-6 km bulk shear
42 kt
0-1 km storm-relative helicity
125 m²/s²
0-3 km storm-relative helicity
298 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.6

Open this sounding in Storm Lab

The text

As transmitted.

984 
WUUS53 KFGF 150655
SVRFGF
MNC027-NDC017-150745-
/O.NEW.KFGF.SV.W.0049.180615T0655Z-180615T0745Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Eastern ND/Grand Forks ND
155 AM CDT FRI JUN 15 2018

The National Weather Service in Grand Forks has issued a

* Severe Thunderstorm Warning for...
  Central Clay County in northwestern Minnesota...
  Southeastern Cass County in southeastern North Dakota...

* Until 245 AM CDT.

* At 155 AM CDT, a severe thunderstorm was located over Horace, or 7
  miles southwest of Fargo, moving northeast at 45 mph.

  HAZARD...60 mph wind gusts and quarter size hail.

  SOURCE...Radar indicated.

  IMPACT...Hail damage to vehicles is expected. Expect wind damage 
           to roofs, siding, and trees.

* This severe thunderstorm will be near...
  Prairie Rose, Briarwood and Rustad around 200 AM CDT.
  Fargo, Reile's Acres and North River around 205 AM CDT.
  Moorhead, Dilworth and Sabin around 210 AM CDT.
  Glyndon around 215 AM CDT.
  Averill and Buffalo River State Park around 220 AM CDT.

Other locations impacted by this severe thunderstorm include Moorhead
Airport.

This includes the following highways...
 Interstate 29 between mile markers 53 and 72.
 Interstate 94 in North Dakota between mile markers 338 and 352.
 Interstate 94 in Minnesota between mile markers 1 and 11.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 4685 9713 4715 9654 4695 9617 4693 9618
      4665 9694
TIME...MOT...LOC 0655Z 243DEG 40KT 4679 9690 

HAIL...1.00IN
WIND...60MPH
 
$$

JK
2 follow-up statements
401 
WWUS53 KFGF 150716
SVSFGF

Severe Weather Statement
National Weather Service Eastern ND/Grand Forks ND
216 AM CDT FRI JUN 15 2018

MNC027-NDC017-150745-
/O.CON.KFGF.SV.W.0049.000000T0000Z-180615T0745Z/
Clay MN-Cass ND-
216 AM CDT FRI JUN 15 2018

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 245 AM CDT
FOR CENTRAL CLAY AND EAST CENTRAL CASS COUNTIES...

At 214 AM CDT, a severe thunderstorm was located near Dilworth, or 8
miles northeast of Fargo, moving northeast at 45 mph.

HAZARD...60 mph wind gusts and quarter size hail.

SOURCE...Trained weather spotters.

IMPACT...Hail damage to vehicles is expected. Expect wind damage to 
         roofs, siding, and trees.

This severe storm will be near...
  Averill around 220 AM CDT.
  Felton around 230 AM CDT.

Other locations impacted by this severe thunderstorm include Moorhead
Airport.

This includes the following highways...
 Interstate 29 between mile markers 62 and 72.
 Interstate 94 in North Dakota between mile markers 349 and 352.
 Interstate 94 in Minnesota between mile markers 1 and 9.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 4695 9692 4715 9654 4695 9617 4693 9618
      4675 9680
TIME...MOT...LOC 0714Z 232DEG 43KT 4694 9666 

HAIL...1.00IN
WIND...60MPH
 
$$

JK
379 
WWUS53 KFGF 150729
SVSFGF

Severe Weather Statement
National Weather Service Eastern ND/Grand Forks ND
229 AM CDT FRI JUN 15 2018

MNC027-NDC017-150738-
/O.CAN.KFGF.SV.W.0049.000000T0000Z-180615T0745Z/
Clay MN-Cass ND-
229 AM CDT FRI JUN 15 2018

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL CLAY AND EAST CENTRAL
CASS COUNTIES IS CANCELLED...
                
The storm which prompted the warning has weakened below severe
limits, and no longer pose an immediate threat to life or property.
Therefore, the warning has been cancelled.  However gusty winds and
heavy rain are still possible with this thunderstorm.

LAT...LON 4695 9692 4715 9654 4695 9617 4693 9618
      4675 9680
TIME...MOT...LOC 0727Z 243DEG 40KT 4702 9644 

$$

JK

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 14, 11:34 PM CDTSpecial Weather StatementFGFKittson56 min
Jun 15, 12:35 AM CDTSpecial Weather StatementFGFKittson, Roseau40 min
Jun 15, 1:21 AM CDTSpecial Weather StatementFGFKittson, Roseau54 min
Jun 15, 1:42 AM CDTSpecial Weather StatementFGFClay63 min
Jun 15, 2:06 AM CDTSpecial Weather StatementFGFLake of the Woods, Roseau54 min
Jun 15, 2:07 AM CDTSpecial Weather StatementFGFLake of the Woods, Roseau53 min
Jun 15, 2:54 AM CDTSpecial Weather StatementFGFHubbard51 min
Jun 15, 3:35 AM CDTSpecial Weather StatementFGFHubbard40 min
Jun 14, 8:54 PM CDTSevere Thunderstorm WarningFGFCavalier, Towner66 min
Jun 14, 9:17 PM CDTTornado Warning Tornado observedFGFCavalier, Towner43 min
Jun 14, 9:51 PM CDTSevere Thunderstorm WarningFGFBenson, Ramsey, Towner39 min
Jun 14, 9:56 PM CDTTornado WarningFGFCavalier, Ramsey, Towner49 min
Jun 14, 10:29 PM CDTSevere Thunderstorm WarningFGFCavalier, Ramsey, Towner46 min
Jun 14, 10:42 PM CDTSevere Thunderstorm WarningFGFCavalier, Ramsey33 min
Jun 14, 11:06 PM CDTSpecial Weather StatementFGFPembina24 min
Jun 14, 11:11 PM CDTSevere Thunderstorm WarningFGFBenson, Ramsey49 min
Jun 14, 11:15 PM CDTSevere Thunderstorm WarningFGFCavalier, Pembina, Ramsey, Walsh45 min
Jun 14, 11:57 PM CDTSevere Thunderstorm WarningFGFBenson, Nelson, Ramsey, Walsh48 min
Jun 14, 11:59 PM CDTSevere Thunderstorm WarningFGFCavalier, Pembina, Ramsey, Walsh46 min
Jun 15, 12:17 AM CDTSevere Thunderstorm WarningFGFBarnes, Cass, Ransom28 min
Jun 15, 12:40 AM CDTSevere Thunderstorm WarningFGFCavalier, Pembina, Ramsey, Walsh42 min
Jun 15, 12:44 AM CDTSpecial Weather StatementFGFCass31 min
Jun 15, 1:01 AM CDTSevere Thunderstorm WarningFGFCass, Ransom, Richland, Sargent44 min
Jun 15, 1:17 AM CDTSpecial Weather StatementFGFCass43 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 2018Severe Thunderstorm Warnings in North Dakota, 2018Every severe thunderstorm warning in 2018

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.