Alert archive / North Dakota / Tornado Warnings in 2011

Tornado Warning 28, NWS Grand Forks, ND

July 10, 2011Richland County, North Dakota

NWS Grand Forks, ND issued this tornado warning at Jul 10, 2011, 5:44 PM CDT for Richland County, North Dakota. It was in force for 36 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: Jul 10, 2011, 5:44 PM CDT (22:44 UTC)
Expired: Jul 10, 2011, 6:20 PM CDT
In force: 36 min
Issued by: NWS Grand Forks, ND
Area: Storm-based polygon

County Richland County, ND

The radar

The Aberdeen radar (KABR), 122 km from the middle of the area, began a volume at 22:47 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 10, 6:20 PM CDT	TSTM WND DMG	8 Wsw Fairmount, ND	GRAIN BIN DAMAGED.

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
Jul 10, 2:29 PM CDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Aberdeen, SD (KABR), launched 12:00Z, 10.7 hours before the alert went out and 162 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: 1313 J/kg
Mixed-layer CIN: -72 J/kg
Mixed-layer LCL: 909 m above ground
0-6 km bulk shear: 50 kt
0-1 km storm-relative helicity: 70 m²/s²
0-3 km storm-relative helicity: 81 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 5.8

Open this sounding in Storm Lab

The text

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

841 
WFUS53 KFGF 102244
TORFGF
NDC077-102330-
/O.NEW.KFGF.TO.W.0028.110710T2244Z-110710T2330Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
544 PM CDT SUN JUL 10 2011

THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHERN RICHLAND COUNTY IN SOUTHEAST NORTH DAKOTA...

* UNTIL 630 PM CDT

* AT 542 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING WIDESPREAD
  STRAIGHT LINE WIND DAMAGE AND BRIEF TORNADOES. THE STORM WAS
  LOCATED 4 MILES SOUTH OF LIDGERWOOD...OR 31 MILES SOUTHWEST OF
  WAHPETON...MOVING TO THE EAST AT 30 MPH.

  IN ADDITION...AT 538 PM CDT...TREES WERE REPORTED DOWN IN THE CITY
  OF CAYUGA WITH THIS STORM.

* THE STORM WILL BE NEAR...
  STILES AROUND 550 PM CDT.
  HANKINSON AROUND 605 PM CDT.
  SONORA AROUND 620 PM CDT.
  LAMARS AROUND 625 PM CDT.

THEREAFTER SOME OTHER LOCATIONS IMPACTED BY THE STORM INCLUDE
FAIRMOUNT.

FOR MOTORISTS ON INTERSTATE 29...THE STORM WILL BE BETWEEN...MILE
MARKERS 0 AND 13 AROUND 610 PM CDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF YOU ARE IN THE PATH OF THIS TORNADO ABANDON CARS AND MOBILE HOMES
FOR A STURDY BUILDING.

&&

LAT...LON 4599 9723 4600 9726 4612 9726 4613 9725
      4613 9658 4593 9657 4593 9723
TIME...MOT...LOC 2243Z 272DEG 28KT 4602 9713

$$

HOPKINS

1 follow-up statement

254 
WWUS53 KFGF 102320
SVSFGF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
620 PM CDT SUN JUL 10 2011

NDC077-102329-
/O.CAN.KFGF.TO.W.0028.000000T0000Z-110710T2330Z/
RICHLAND ND-
620 PM CDT SUN JUL 10 2011

...THE TORNADO WARNING FOR SOUTHERN RICHLAND COUNTY IN SOUTHEAST
NORTH DAKOTA IS CANCELLED...

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

ADDITIONAL STRONG THUNDERSTORMS ARE STILL POSSIBLE...AND A TORNADO 
WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT.

LAT...LON 4599 9723 4600 9726 4612 9726 4613 9725
      4613 9658 4593 9657 4593 9723
TIME...MOT...LOC 2319Z 272DEG 28KT 4601 9673

$$

HOPKINS

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 10, 4:15 PM CDT	Tornado Warning	FGF	Ransom	45 min
Jul 10, 4:43 PM CDT	Areal Flood Advisory	FGF	Ransom, Richland, Sargent	13 hr
Jul 10, 4:47 PM CDT	Tornado Warning	FGF	Sargent	43 min
Jul 10, 4:59 PM CDT	Severe Thunderstorm Warning	FGF	Ransom	61 min
Jul 10, 5:24 PM CDT	Severe Thunderstorm Warning	FGF	Ransom, Richland, Sargent	66 min
Jul 10, 6:07 PM CDT	Severe Thunderstorm Warning	FGF	Richland	53 min

Nearby

Tornado Warnings in North Dakota, 2011 Every tornado warning in 2011 Tornadoes 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.