Alert archive / North Dakota / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 21, NWS Grand Forks, ND

June 9, 2012Pembina County, North Dakota; Kittson County, Minnesota

NWS Grand Forks, ND issued this severe thunderstorm warning at Jun 9, 2012, 9:15 PM CDT for Pembina County, North Dakota; Kittson County, Minnesota. It was in force for 30 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: Jun 9, 2012, 9:15 PM CDT (02:15 UTC)
Expired: Jun 9, 2012, 9:45 PM CDT
In force: 30 min
Issued by: NWS Grand Forks, ND
Area: Storm-based polygon
Hail: 1.5 in
Wind: 50.0 mph

Counties Kittson County, MN, Pembina County, ND

The radar

The Fargo/Grand Forks radar (KMVX), 152 km from the middle of the area, began a volume at 02:15 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
Jun 9, 9:30 PM CDT	HAIL 1.25	3 Nnw Humboldt, MN

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

The nearest sounding before it

International Fa, MN (KINL), launched 00:00Z, 2.3 hours before the alert went out and 283 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: 1066 J/kg
Mixed-layer CIN: -106 J/kg
Mixed-layer LCL: 1760 m above ground
0-6 km bulk shear: 45 kt
0-1 km storm-relative helicity: 193 m²/s²
0-3 km storm-relative helicity: 496 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 16.8

Open this sounding in Storm Lab

The text

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

978 
WUUS53 KFGF 100215
SVRFGF
MNC069-NDC067-100245-
/O.NEW.KFGF.SV.W.0021.120610T0215Z-120610T0245Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
915 PM CDT SAT JUN 9 2012

THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHWESTERN KITTSON COUNTY IN NORTHWEST MINNESOTA...
  NORTHEASTERN PEMBINA COUNTY IN NORTHEAST NORTH DAKOTA...

* UNTIL 945 PM CDT

* AT 910 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING PING PONG BALL SIZE HAIL.
  THE STORM WAS LOCATED 4 MILES NORTHEAST OF JOLIETTE...OR 33 MILES
  NORTH OF GRAFTON...MOVING TO THE NORTHEAST AT 40 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  NOYES AND HUMBOLDT AROUND 920 PM CDT.
  ORLEANS AROUND 925 PM CDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

REMEMBER SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE
TORNADOES WITH LITTLE OR NO ADVANCE WARNING.

&&

LAT...LON 4877 9713 4889 9734 4901 9720 4901 9681
TIME...MOT...LOC 0215Z 220DEG 36KT 4890 9714
WIND...HAIL <50MPH 1.50IN

$$

DTR

2 follow-up statements

233 
WWUS53 KFGF 100231
SVSFGF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
931 PM CDT SAT JUN 9 2012

NDC067-100241-
/O.CAN.KFGF.SV.W.0021.000000T0000Z-120610T0245Z/
PEMBINA ND-
931 PM CDT SAT JUN 9 2012

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN PEMBINA COUNTY IN
NORTHEAST NORTH DAKOTA IS CANCELLED...

THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED 
AREA.

LAT...LON 4901 9681 4877 9713 4882 9716 4899 9722
      4900 9722
TIME...MOT...LOC 0231Z 219DEG 33KT 4900 9703

$$

MNC069-100245-
/O.CON.KFGF.SV.W.0021.000000T0000Z-120610T0245Z/
KITTSON MN-
931 PM CDT SAT JUN 9 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHWESTERN
KITTSON COUNTY IN NORTHWEST MINNESOTA UNTIL 945 PM CDT...

AT 929 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL.  THE
STORM WAS LOCATED 5 MILES NORTHEAST OF HUMBOLDT...OR 42 MILES
NORTHEAST OF GRAFTON...MOVING TO THE NORTHEAST AT 40 MPH.

THE SEVERE THUNDERSTORM WILL AFFECT MAINLY RURAL AREAS OF 
NORTHWESTERN KITTSON COUNTY AND WILL SOON CROSS THE BORDER INTO 
MANITOBA. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

REMEMBER SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE
TORNADOES WITH LITTLE OR NO ADVANCE WARNING.

&&

LAT...LON 4901 9681 4877 9713 4882 9716 4899 9722
      4900 9722
TIME...MOT...LOC 0231Z 219DEG 33KT 4900 9703

$$

DTR

444 
WWUS53 KFGF 100243
SVSFGF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
943 PM CDT SAT JUN 9 2012

MNC069-100253-
/O.EXP.KFGF.SV.W.0021.000000T0000Z-120610T0245Z/
KITTSON MN-
943 PM CDT SAT JUN 9 2012

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN KITTSON COUNTY IN
NORTHWEST MINNESOTA WILL EXPIRE AT 945 PM CDT...

THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED
AREA.

LAT...LON 4901 9681 4877 9713 4882 9716 4899 9722
      4900 9722
TIME...MOT...LOC 0243Z 219DEG 33KT 4908 9692

$$

DTR

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 9, 7:50 PM CDT	Special Weather Statement	FGF	Pembina	55 min
Jun 9, 7:58 PM CDT	Severe Thunderstorm Warning	FGF	Pembina	62 min
Jun 10, 4:18 AM CDT	Severe Thunderstorm Warning	FGF	Richland, Sargent	42 min
Jun 9, 11:50 PM CDT	Special Weather Statement	FGF		55 min
Jun 10, 6:40 AM CDT	Severe Thunderstorm Warning	FGF	Roseau	50 min
Jun 10, 6:46 AM CDT	Severe Thunderstorm Warning	FGF	Beltrami, Lake of the Woods, Marshall, Roseau	59 min
Jun 10, 7:36 AM CDT	Special Weather Statement	FGF	Lake of the Woods	24 min
Jun 10, 8:08 AM CDT	Special Weather Statement	FGF	Mahnomen	52 min
Jun 10, 8:34 AM CDT	Severe Thunderstorm Warning	FGF	Clay, Mahnomen, Norman, Polk	41 min
Jun 10, 9:30 AM CDT	Special Weather Statement	FGF	Mahnomen	30 min
Jun 10, 3:23 PM CDT	Special Weather Statement	FGF	Wadena	67 min
Jun 10, 3:49 PM CDT	Severe Thunderstorm Warning	FGF	Wadena	26 min
Jun 10, 4:09 PM CDT	Special Weather Statement	FGF	Hubbard	66 min

Nearby

Severe Thunderstorm Warnings in North Dakota, 2012 Severe Thunderstorm Warnings in Minnesota, 2012 Every severe thunderstorm warning in 2012

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.