Alert archive / Minnesota / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 8, NWS Grand Forks, ND

May 10, 2011Beltrami County, Clearwater County, Hubbard County, Minnesota

NWS Grand Forks, ND issued this severe thunderstorm warning at May 10, 2011, 5:27 AM CDT for Beltrami County, Clearwater County, Hubbard County, Minnesota. It was in force for 63 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 10, 2011, 5:27 AM CDT (10:27 UTC)
Expired: May 10, 2011, 6:30 AM CDT
In force: 63 min
Issued by: NWS Grand Forks, ND
Area: Storm-based polygon
Hail: 1.5 in
Wind: 60.0 mph

Counties Beltrami County, MN, Clearwater County, MN, Hubbard County, MN

The radar

The Fargo/Grand Forks radar (KMVX), 186 km from the middle of the area, began a volume at 10:30 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 10, 5:50 AM CDT	HAIL 1.25	Solway, MN	1.25 INCH HAIL REPORT IN THE TOWN OF SOLWAY.

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, 10.5 hours before the alert went out and 163 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 546 m above ground
0-6 km bulk shear: 21 kt
0-1 km storm-relative helicity: 132 m²/s²
0-3 km storm-relative helicity: 150 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

403 
WUUS53 KFGF 101027
SVRFGF
MNC007-029-057-101130-
/O.NEW.KFGF.SV.W.0008.110510T1027Z-110510T1130Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
527 AM CDT TUE MAY 10 2011

THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTH CENTRAL BELTRAMI COUNTY IN NORTH CENTRAL MINNESOTA...
  EAST CENTRAL CLEARWATER COUNTY IN NORTHWEST MINNESOTA...
  NORTHERN HUBBARD COUNTY IN NORTH CENTRAL MINNESOTA...

* UNTIL 630 AM CDT

* AT 521 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING PING PONG BALL SIZE
  HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THE STORM WAS
  LOCATED 3 MILES NORTHWEST OF UPPER RICE LAKE...OR 22 MILES WEST OF
  BEMIDJI...MOVING TO THE NORTHEAST AT 35 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  BECIDA AROUND 535 AM CDT.
  SOLWAY AROUND 540 AM CDT.
  PINEWOOD AROUND 545 AM CDT.
  WILTON AROUND 550 AM CDT.

THEREAFTER SOME OTHER LOCATIONS IMPACTED BY THE SEVERE THUNDERSTORM
INCLUDE NARY...BEMIDJI...PUPOSKY...TURTLE RIVER...TENSTRIKE AND
HINES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4781 9467 4742 9448 4742 9467 4732 9467
      4730 9527 4759 9546
TIME...MOT...LOC 1026Z 247DEG 30KT 4745 9529
WIND...HAIL 60MPH 1.50IN

$$

EWENS

2 follow-up statements

199 
WWUS53 KFGF 101105
SVSFGF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
605 AM CDT TUE MAY 10 2011

MNC029-057-101113-
/O.CAN.KFGF.SV.W.0008.000000T0000Z-110510T1130Z/
HUBBARD MN-CLEARWATER MN-
605 AM CDT TUE MAY 10 2011

...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN HUBBARD COUNTY IN
NORTH CENTRAL MINNESOTA...AND EAST CENTRAL CLEARWATER COUNTY IN
NORTHWEST MINNESOTA IS CANCELLED...

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

LAT...LON 4742 9477 4742 9517 4767 9518 4781 9467
      4742 9448 4742 9467
TIME...MOT...LOC 1103Z 247DEG 30KT 4757 9487

$$

MNC007-101130-
/O.CON.KFGF.SV.W.0008.000000T0000Z-110510T1130Z/
BELTRAMI MN-
605 AM CDT TUE MAY 10 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTH CENTRAL
BELTRAMI COUNTY IN NORTH CENTRAL MINNESOTA UNTIL 630 AM CDT...

AT 558 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING PING PONG BALL SIZE HAIL...
AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THE STORM WAS LOCATED 5
MILES NORTHEAST OF WILTON...OR 5 MILES NORTHWEST OF BEMIDJI...MOVING
TO THE NORTHEAST AT 35 MPH.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  TURTLE RIVER AROUND 610 AM CDT.
  TENSTRIKE AROUND 620 AM CDT.
  HINES AROUND 625 AM CDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4742 9477 4742 9517 4767 9518 4781 9467
      4742 9448 4742 9467
TIME...MOT...LOC 1103Z 247DEG 30KT 4757 9487

$$

EWENS

072 
WWUS53 KFGF 101132
SVSFGF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
632 AM CDT TUE MAY 10 2011

MNC007-101141-
/O.EXP.KFGF.SV.W.0008.000000T0000Z-110510T1130Z/
BELTRAMI MN-
632 AM CDT TUE MAY 10 2011

...THE SEVERE THUNDERSTORM WARNING FOR SOUTH CENTRAL BELTRAMI COUNTY
IN NORTH CENTRAL MINNESOTA HAS EXPIRED...

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

HOWEVER...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR EAST 
CENTRAL BELTRAMI COUNTY UNTIL 715 AM CDT.

LAT...LON 4742 9477 4742 9517 4767 9518 4781 9467
      4742 9448 4742 9467
TIME...MOT...LOC 1105Z 247DEG 30KT 4757 9485

$$

EWENS

The office that day

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

Issued	Product	Office	Counties	Lasted
May 10, 2:43 AM CDT	Severe Thunderstorm Warning	FGF	Clay	62 min
May 10, 3:30 AM CDT	Severe Thunderstorm Warning	FGF	Becker, Clay, Mahnomen, Norman	60 min
May 10, 4:29 AM CDT	Severe Thunderstorm Warning	FGF	Becker, Clearwater, Mahnomen, Norman, Polk	61 min
May 10, 6:29 AM CDT	Severe Thunderstorm Warning	FGF	Beltrami	46 min
May 10, 6:37 AM CDT	Severe Thunderstorm Warning	FGF	Clearwater, Polk	53 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 2011 Every severe thunderstorm warning in 2011

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.