Alert archive / North Dakota / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 9, NWS Grand Forks, ND

May 30, 2016Grand Forks County, North Dakota; Polk County, Minnesota

NWS Grand Forks, ND issued this severe thunderstorm warning at May 30, 2016, 4:32 PM CDT for Grand Forks County, North Dakota; Polk County, Minnesota. It was in force for 31 min. 1 report 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, 4:32 PM CDT (21:32 UTC)
Expired: May 30, 2016, 5:03 PM CDT
In force: 31 min
Issued by: NWS Grand Forks, ND
Area: Storm-based polygon
Hail: 1.0 in
Wind: 50.0 mph

Counties Polk County, MN, Grand Forks County, ND

The radar

The Fargo/Grand Forks radar (KMVX), 48 km from the middle of the area, began a volume at 21:37 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

Time	Report	Where	Remark
May 30, 4:40 PM CDT	HAIL 1	Bygland, MN	MAINLY 0.50 TO 0.75 INCH HAIL.

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.

Issued	Product	Office	Lasted
May 30, 2:48 PM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

International Fa, MN (KINL), launched 12:00Z, 9.5 hours before the alert went out and 277 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: 23 J/kg
Mixed-layer CIN: -93 J/kg
Mixed-layer LCL: 1114 m above ground
0-6 km bulk shear: 47 kt
0-1 km storm-relative helicity: 118 m²/s²
0-3 km storm-relative helicity: 145 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

512 
WUUS53 KFGF 302132
SVRFGF
MNC119-NDC035-302215-
/O.NEW.KFGF.SV.W.0009.160530T2132Z-160530T2215Z/

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

THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  WEST CENTRAL POLK COUNTY IN NORTHWESTERN MINNESOTA...
  EASTERN GRAND FORKS COUNTY IN NORTHEASTERN NORTH DAKOTA...

* UNTIL 515 PM CDT

* AT 432 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED OVER
  BYGLAND...OR 9 MILES SOUTHEAST OF GRAND FORKS...MOVING NORTHEAST
  AT 15 MPH.

  HAZARD...QUARTER SIZE HAIL. 

  SOURCE...RADAR INDICATED. 

  IMPACT...DAMAGE TO VEHICLES IS EXPECTED. 

* THIS SEVERE THUNDERSTORM WILL BE NEAR...
  BYGLAND AROUND 435 PM CDT. 
  MALLORY AROUND 450 PM CDT. 
  FISHER AND DAVIDSON AROUND 500 PM CDT. 
  CROOKSTON AND KEY WEST AROUND 515 PM CDT. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4774 9701 4782 9705 4799 9667 4781 9656
TIME...MOT...LOC 2132Z 245DEG 14KT 4780 9696 

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

VG

2 follow-up statements

763 
WWUS53 KFGF 302146
SVSFGF

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

NDC035-302154-
/O.CAN.KFGF.SV.W.0009.000000T0000Z-160530T2215Z/
GRAND FORKS ND-
446 PM CDT MON MAY 30 2016

...THE SEVERE THUNDERSTORM WARNING FOR EASTERN GRAND FORKS COUNTY IS
CANCELLED...
    
THE SEVERE THUNDERSTORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF
THE WARNED AREA. THEREFORE THE WARNING HAS BEEN CANCELLED.

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

LAT...LON 4781 9656 4775 9694 4777 9694 4778 9696
      4779 9696 4780 9697 4782 9698 4783 9698
      4799 9667
TIME...MOT...LOC 2144Z 257DEG 13KT 4779 9691 

$$

MNC119-302215-
/O.CON.KFGF.SV.W.0009.000000T0000Z-160530T2215Z/
POLK MN-
446 PM CDT MON MAY 30 2016

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 515 PM CDT
FOR WEST CENTRAL POLK COUNTY...

AT 444 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED OVER BYGLAND...OR
11 MILES SOUTHEAST 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...
  DAVIDSON AROUND 500 PM CDT. 
  FISHER AROUND 505 PM CDT. 
  CROOKSTON AROUND 515 PM CDT. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4781 9656 4775 9694 4777 9694 4778 9696
      4779 9696 4780 9697 4782 9698 4783 9698
      4799 9667
TIME...MOT...LOC 2144Z 257DEG 13KT 4779 9691 

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

VG

393 
WWUS53 KFGF 302203
SVSFGF

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

MNC119-302212-
/O.CAN.KFGF.SV.W.0009.000000T0000Z-160530T2215Z/
POLK MN-
503 PM CDT MON MAY 30 2016

...THE SEVERE THUNDERSTORM WARNING FOR WEST CENTRAL POLK COUNTY 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.

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

LAT...LON 4781 9656 4775 9694 4777 9694 4778 9696
      4779 9696 4780 9697 4782 9698 4783 9698
      4799 9667
TIME...MOT...LOC 2200Z 245DEG 14KT 4782 9681 

$$

VG

The office that day

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

Issued	Product	Office	Counties	Lasted
May 30, 1:22 PM CDT	Special Weather Statement	FGF	Eddy	38 min
May 30, 2:16 PM CDT	Special Weather Statement	FGF	Nelson	59 min
May 30, 2:21 PM CDT	Special Weather Statement	FGF	Grand Forks	39 min
May 30, 2:28 PM CDT	Severe Thunderstorm Warning	FGF	Grand Forks	47 min
May 30, 3:17 PM CDT	Severe Thunderstorm Warning	FGF	Grand Forks	43 min
May 30, 3:31 PM CDT	Areal Flood Advisory	FGF	Grand Forks	3 hr
May 30, 4:08 PM CDT	Special Weather Statement	FGF	Grand Forks	37 min
May 30, 4:14 PM CDT	Severe Thunderstorm Warning	FGF	Grand Forks	28 min
May 30, 6:27 PM CDT	Special Weather Statement	FGF	Steele	33 min
May 30, 9:33 AM CDT	River Flood Warning	FGF	Kittson	71 hr
May 30, 3:57 PM CDT	Special Weather Statement	FGF	Polk	33 min
May 30, 5:37 PM CDT	Special Weather Statement	FGF	Polk	53 min
May 30, 5:40 PM CDT	Severe Thunderstorm Warning	FGF	Polk	35 min
May 30, 5:50 PM CDT	Areal Flood Advisory	FGF	Polk	3 hr
May 30, 6:16 PM CDT	Severe Thunderstorm Warning	FGF	Polk	44 min
May 30, 6:19 PM CDT	Flash Flood Warning	FGF	Polk	3 hr

Nearby

Severe Thunderstorm Warnings in North Dakota, 2016 Severe Thunderstorm Warnings in Minnesota, 2016 Every 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.