Alert archive / Minnesota / Tornado Warnings in 2015

Tornado Warning 52, NWS Grand Forks, ND

July 14, 2015Marshall County, Minnesota

NWS Grand Forks, ND issued this tornado warning at Jul 14, 2015, 5:03 PM CDT for Marshall County, Minnesota. It was in force for 27 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 14, 2015, 5:03 PM CDT (22:03 UTC)
Expired: Jul 14, 2015, 5:30 PM CDT
In force: 27 min
Issued by: NWS Grand Forks, ND
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 1.0 in

County Marshall County, MN

The radar

The Fargo/Grand Forks radar (KMVX), 117 km from the middle of the area, began a volume at 22:03 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 14, 5:25 PM CDT	HAIL 1.25	4 Wnw Holt, MN	LARGE HAIL...STRONG WINDS AND VERY HEAVY RAIN.

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 12:00Z, 10.1 hours before the alert went out and 224 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: 622 m above ground
0-6 km bulk shear: 7 kt
0-1 km storm-relative helicity: -6 m²/s²
0-3 km storm-relative helicity: 25 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.

528 
WFUS53 KFGF 142203
TORFGF
MNC089-142230-
/O.NEW.KFGF.TO.W.0052.150714T2203Z-150714T2230Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
503 PM CDT TUE JUL 14 2015

THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A

* TORNADO WARNING FOR...
  CENTRAL MARSHALL COUNTY IN NORTHWESTERN MINNESOTA...

* UNTIL 530 PM CDT
    
* AT 502 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A
  TORNADO WAS LOCATED OVER NEWFOLDEN...OR 18 MILES NORTHWEST OF THIEF
  RIVER FALLS...MOVING SOUTHEAST AT 20 MPH.

  HAZARD...TORNADO AND QUARTER SIZE HAIL. 

  SOURCE...RADAR INDICATED ROTATION. 

  IMPACT...EXPECT DAMAGE TO MOBILE HOMES...ROOFS AND VEHICLES. 

* THIS DANGEROUS STORM WILL BE NEAR...
  NEWFOLDEN AROUND 505 PM CDT.
  HOLT AROUND 530 PM CDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TO REPORT SEVERE WEATHER CONTACT YOUR NEAREST LAW ENFORCEMENT AGENCY.
THEY WILL SEND YOUR REPORT TO THE NATIONAL WEATHER SERVICE OFFICE IN
GRAND FORKS.

&&

LAT...LON 4836 9645 4845 9632 4833 9605 4819 9632
TIME...MOT...LOC 2202Z 313DEG 17KT 4836 9635 

TORNADO...RADAR INDICATED
HAIL...1.00IN

$$

JM

1 follow-up statement

374 
WWUS53 KFGF 142230
SVSFGF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
530 PM CDT TUE JUL 14 2015

MNC089-142239-
/O.EXP.KFGF.TO.W.0052.000000T0000Z-150714T2230Z/
MARSHALL MN-
530 PM CDT TUE JUL 14 2015

...THE TORNADO WARNING FOR CENTRAL MARSHALL COUNTY WILL EXPIRE AT 530
PM CDT...
                
THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER APPEARS CAPABLE OF PRODUCING A TORNADO.
THEREFORE THE WARNING WILL BE ALLOWED TO EXPIRE.  HOWEVER SMALL HAIL
IS STILL POSSIBLE WITH THIS THUNDERSTORM.

LAT...LON 4836 9645 4845 9632 4833 9605 4819 9632
TIME...MOT...LOC 2229Z 313DEG 17KT 4836 9635 

$$

JAM

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 14, 4:15 PM CDT	Special Weather Statement	FGF	Kittson	30 min
Jul 14, 4:45 PM CDT	Special Weather Statement	FGF	Kittson	60 min
Jul 14, 5:35 PM CDT	Special Weather Statement	FGF	Pennington	40 min
Jul 14, 6:59 PM CDT	Special Weather Statement	FGF	Polk	61 min

Nearby

Tornado Warnings in Minnesota, 2015 Every tornado warning in 2015 Tornadoes in 2015

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.