Alert archive / Minnesota / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 76, NWS Grand Forks, ND

July 17, 2011Beltrami County, Minnesota

NWS Grand Forks, ND issued this severe thunderstorm warning at Jul 17, 2011, 1:53 AM CDT for Beltrami County, Minnesota. It was in force for 37 min. 2 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: Jul 17, 2011, 1:53 AM CDT (06:53 UTC)
Expired: Jul 17, 2011, 2:30 AM CDT
In force: 37 min
Issued by: NWS Grand Forks, ND
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Beltrami County, MN

The radar

The Fargo/Grand Forks radar (KMVX), 195 km from the middle of the area, began a volume at 06:52 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
Jul 17, 2:20 AM CDT	TSTM WND GST 70	3 W Blackduck, MN
Jul 17, 2:20 AM CDT	HAIL 1	3 W Blackduck, 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, 6.9 hours before the alert went out and 135 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: 1181 J/kg
Mixed-layer CIN: -107 J/kg
Mixed-layer LCL: 1398 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: 121 m²/s²
0-3 km storm-relative helicity: 115 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 4.9

Open this sounding in Storm Lab

The text

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

872 
WUUS53 KFGF 170653
SVRFGF
MNC007-170730-
/O.NEW.KFGF.SV.W.0076.110717T0653Z-110717T0730Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
153 AM CDT SUN JUL 17 2011

THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EAST CENTRAL BELTRAMI COUNTY IN NORTH CENTRAL MINNESOTA...

* UNTIL 230 AM CDT

* AT 148 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
  DAMAGING WINDS IN EXCESS OF 60 MPH. THE STORM WAS LOCATED 3 MILES
  NORTHEAST OF REDBY...OR 30 MILES NORTH OF BEMIDJI...MOVING TO THE
  EAST AT 40 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  SAUM AROUND 200 AM CDT.
  TENSTRIKE AND HINES AROUND 205 AM CDT.
  BLACKDUCK AROUND 210 AM CDT.
  SHOOKS AND KELLIHER AROUND 215 AM CDT.

THEREAFTER SOME OTHER LOCATIONS IMPACTED BY THE SEVERE THUNDERSTORM
INCLUDE FUNKLEY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4784 9502 4803 9495 4801 9440 4749 9441
TIME...MOT...LOC 0653Z 277DEG 36KT 4791 9479
WIND...HAIL 60MPH 1.00IN

$$
PJS

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 16, 7:54 PM CDT	Tornado Warning	FGF	Kittson, Marshall	51 min
Jul 16, 8:42 PM CDT	Tornado Warning	FGF	Kittson, Marshall, Roseau	48 min
Jul 16, 9:34 PM CDT	Flash Flood Warning	FGF	Kittson, Roseau	9 hr
Jul 16, 9:44 PM CDT	Severe Thunderstorm Warning	FGF	Kittson, Marshall, Roseau	61 min
Jul 16, 10:38 PM CDT	Severe Thunderstorm Warning	FGF	Beltrami, Marshall, Roseau	37 min
Jul 16, 10:41 PM CDT	Areal Flood Advisory	FGF	Kittson, Marshall	8 hr
Jul 16, 11:08 PM CDT	Severe Thunderstorm Warning	FGF	Marshall	52 min
Jul 16, 11:20 PM CDT	Severe Thunderstorm Warning	FGF	Kittson, Roseau	40 min
Jul 17, 12:56 AM CDT	Severe Thunderstorm Warning	FGF	Beltrami, Clearwater, Lake of the Woods, Marshall, Pennington	64 min
Jul 17, 2:25 AM CDT	Severe Thunderstorm Warning	FGF	Beltrami	25 min
Jul 17, 3:01 AM CDT	Severe Thunderstorm Warning	FGF	Beltrami	59 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.