Alert archive / North Dakota / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 7, NWS Grand Forks, ND

May 30, 2016Grand Forks County, North Dakota

NWS Grand Forks, ND issued this severe thunderstorm warning at May 30, 2016, 3:17 PM CDT for Grand Forks County, North Dakota. It was in force for 43 min. 4 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
May 30, 2016, 3:17 PM CDT (20:17 UTC)
Expired
May 30, 2016, 4:00 PM CDT
In force
43 min
Issued by
NWS Grand Forks, ND
Area
Storm-based polygon
Hail
1.0 in
Wind
50.0 mph

County Grand Forks County, ND

The radar

The Fargo/Grand Forks radar (KMVX), 49 km from the middle of the area, began a volume at 20:18 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
May 30, 3:20 PM CDTHAIL 1Larimore, ND
May 30, 3:40 PM CDTHAIL 0.75Larimore, ND
May 30, 3:53 PM CDTHAIL 0.75Arvilla, NDAT THE TURTLE RIVER STATE PARK.
May 30, 4:02 PM CDTHAIL 0.75Grand Forks Afb, ND

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
May 30, 2:48 PM CDTSevere Thunderstorm WatchSPC7 hr

The nearest sounding before it

Bismarck Municip, ND (KBIS), launched 12:00Z, 8.3 hours before the alert went out and 266 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 2016-05-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 197 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, Bismarck Municip, ND at 12:00Z on 2016-05-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 103 square meters per square second.19395878Sfc1 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
197 J/kg
Mixed-layer CIN
-196 J/kg
Mixed-layer LCL
1274 m above ground
0-6 km bulk shear
32 kt
0-1 km storm-relative helicity
103 m²/s²
0-3 km storm-relative helicity
131 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

The text

As transmitted.

998 
WUUS53 KFGF 302017
SVRFGF
NDC035-302100-
/O.NEW.KFGF.SV.W.0007.160530T2017Z-160530T2100Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
317 PM CDT MON MAY 30 2016

THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  WEST CENTRAL GRAND FORKS COUNTY IN NORTHEASTERN NORTH DAKOTA...

* UNTIL 400 PM CDT

* AT 316 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED OVER
  LARIMORE...OR 26 MILES WEST OF GRAND FORKS...MOVING EAST AT 10 MPH.

  HAZARD...QUARTER SIZE HAIL. 

  SOURCE...RADAR INDICATED. 

  IMPACT...DAMAGE TO VEHICLES IS EXPECTED. 

* THIS SEVERE THUNDERSTORM WILL BE NEAR...
  LARIMORE AROUND 320 PM CDT. 
  ARVILLA AROUND 340 PM CDT. 
  HONEYFORD AROUND 345 PM CDT. 
  EMERADO AROUND 355 PM CDT. 
  GRAND FORKS AFB AND MEKINOCK AROUND 400 PM CDT. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

&&

LAT...LON 4785 9776 4798 9778 4807 9739 4787 9733
TIME...MOT...LOC 2016Z 259DEG 17KT 4791 9765 

HAIL...1.00IN
WIND...<50MPH
 
$$

VG
3 follow-up statements
059 
WWUS53 KFGF 302033
SVSFGF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
333 PM CDT MON MAY 30 2016

NDC035-302100-
/O.CON.KFGF.SV.W.0007.000000T0000Z-160530T2100Z/
GRAND FORKS ND-
333 PM CDT MON MAY 30 2016

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 400 PM CDT
FOR CENTRAL GRAND FORKS COUNTY...

AT 332 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR ARVILLA...OR
22 MILES WEST OF GRAND FORKS...MOVING EAST AT 10 MPH.

HAZARD...QUARTER SIZE HAIL. 

SOURCE...RADAR INDICATED. 

IMPACT...DAMAGE TO VEHICLES IS EXPECTED. 

THIS SEVERE STORM WILL BE NEAR...
  ARVILLA AROUND 340 PM CDT. 
  EMERADO...GRAND FORKS AFB AND MEKINOCK AROUND 400 PM CDT. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

&&

LAT...LON 4787 9767 4797 9770 4804 9738 4790 9734
TIME...MOT...LOC 2032Z 255DEG 14KT 4793 9756 

HAIL...1.00IN
WIND...<50MPH
 
$$

VG
276 
WWUS53 KFGF 302047
SVSFGF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
347 PM CDT MON MAY 30 2016

NDC035-302100-
/O.CON.KFGF.SV.W.0007.000000T0000Z-160530T2100Z/
GRAND FORKS ND-
347 PM CDT MON MAY 30 2016

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 400 PM CDT
FOR CENTRAL GRAND FORKS COUNTY...

AT 346 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED OVER ARVILLA...OR
19 MILES WEST OF GRAND FORKS...MOVING EAST AT 15 MPH.

HAZARD...QUARTER SIZE HAIL. 

SOURCE...RADAR INDICATED. 

IMPACT...DAMAGE TO VEHICLES IS EXPECTED. 

THIS SEVERE STORM WILL BE NEAR...
  GRAND FORKS AFB...EMERADO AND MEKINOCK AROUND 400 PM CDT. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

&&

LAT...LON 4789 9754 4799 9759 4804 9738 4790 9734
TIME...MOT...LOC 2046Z 251DEG 13KT 4795 9749 

HAIL...1.00IN
WIND...<50MPH
 
$$

VG
858 
WWUS53 KFGF 302100
SVSFGF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
400 PM CDT MON MAY 30 2016

NDC035-302110-
/O.EXP.KFGF.SV.W.0007.000000T0000Z-160530T2100Z/
GRAND FORKS ND-
400 PM CDT MON MAY 30 2016

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL GRAND FORKS COUNTY HAS
EXPIRED...
                
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 ALLOWED TO EXPIRE.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT FOR
NORTHEASTERN NORTH DAKOTA.

LAT...LON 4789 9754 4799 9759 4804 9738 4790 9734
TIME...MOT...LOC 2059Z 259DEG 17KT 4795 9749 

$$

VG

The office that day

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

IssuedProductOfficeCountiesLasted
May 30, 1:22 PM CDTSpecial Weather StatementFGFEddy38 min
May 30, 2:16 PM CDTSpecial Weather StatementFGFNelson59 min
May 30, 2:21 PM CDTSpecial Weather StatementFGFGrand Forks39 min
May 30, 2:28 PM CDTSevere Thunderstorm WarningFGFGrand Forks47 min
May 30, 3:31 PM CDTAreal Flood AdvisoryFGFGrand Forks3 hr
May 30, 4:08 PM CDTSpecial Weather StatementFGFGrand Forks37 min
May 30, 4:14 PM CDTSevere Thunderstorm WarningFGFGrand Forks28 min
May 30, 4:32 PM CDTSevere Thunderstorm WarningFGFGrand Forks31 min
May 30, 6:27 PM CDTSpecial Weather StatementFGFSteele33 min

Nearby

Severe Thunderstorm Warnings in North Dakota, 2016Every severe thunderstorm warning 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.