Alert archive / Minnesota / Tornado Warnings in 2016

Tornado Warning 35, NWS Grand Forks, ND

August 28, 2016Becker County, Mahnomen County, Norman County, Minnesota

NWS Grand Forks, ND issued this tornado warning at Aug 28, 2016, 10:41 PM CDT for Becker County, Mahnomen County, Norman County, Minnesota. It was in force for 49 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
Aug 28, 2016, 10:41 PM CDT (03:41 UTC)
Expired
Aug 28, 2016, 11:30 PM CDT
In force
49 min
Issued by
NWS Grand Forks, ND
Area
Storm-based polygon
Tornado
Radar indicated
Hail
1.0 in

Counties Becker County, MN, Mahnomen County, MN, Norman County, MN

The radar

The Fargo/Grand Forks radar (KMVX), 115 km from the middle of the area, began a volume at 03:44 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

TimeReportWhereRemark
Aug 28, 11:15 PM CDTHAIL 1.58 Ese Twin Valley, MNLARGE HAIL AND STRONG WINDS CAUSED CONSIDERABLE DAMAGE TO CROPS ACROSS FOSSOM TOWNSHIP.
Aug 28, 11:30 PM CDTHAIL 1.255 Wnw Waubun, MNLARGE HAIL AND VERY STRONG WINDS CAUSED CONSIDERABE CROP DAMAGE ACROSS WESTERN POPPLE GROVE TOWNSHIP.

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, 3.7 hours before the alert went out and 247 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-pSkew-T log-p diagram, International Fa, MN at 00:00Z on 2016-08-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 36 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, International Fa, MN at 00:00Z on 2016-08-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 81 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
36 J/kg
Mixed-layer CIN
-153 J/kg
Mixed-layer LCL
1127 m above ground
0-6 km bulk shear
33 kt
0-1 km storm-relative helicity
81 m²/s²
0-3 km storm-relative helicity
235 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.3

Open this sounding in Storm Lab

The text

As transmitted.

641 
WFUS53 KFGF 290341
TORFGF
MNC005-087-107-290430-
/O.NEW.KFGF.TO.W.0035.160829T0341Z-160829T0430Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
1041 PM CDT SUN AUG 28 2016

THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHWESTERN BECKER COUNTY IN NORTHWESTERN MINNESOTA...
  MAHNOMEN COUNTY IN NORTHWESTERN MINNESOTA...
  EASTERN NORMAN COUNTY IN NORTHWESTERN MINNESOTA...

* UNTIL 1130 PM CDT
    
* AT 1040 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A
  TORNADO WAS LOCATED NEAR WAUKON...OR 38 MILES NORTH OF DETROIT
  LAKES...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...
  MAHNOMEN AROUND 1050 PM CDT. 
  WAUBUN AROUND 1055 PM CDT. 
  OGEMA AROUND 1100 PM CDT. 
  WHITE EARTH AROUND 1105 PM CDT. 
  TULABY LAKE AROUND 1110 PM CDT. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

HEAVY RAINFALL MAY HIDE THIS TORNADO. DO NOT WAIT TO SEE OR HEAR THE
TORNADO. ALSO...TORNADOES ARE EXTREMELY DIFFICULT TO SEE AND CONFIRM
AT NIGHT. TAKE COVER NOW!

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 4695 9579 4723 9637 4747 9625 4731 9556
      4715 9555
TIME...MOT...LOC 0340Z 304DEG 48KT 4733 9615 

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

$$

LEE
1 follow-up statement
445 
WWUS53 KFGF 290418
SVSFGF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
1118 PM CDT SUN AUG 28 2016

MNC005-087-107-290430-
/O.CON.KFGF.TO.W.0035.000000T0000Z-160829T0430Z/
BECKER MN-MAHNOMEN MN-NORMAN MN-
1118 PM CDT SUN AUG 28 2016

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1130 PM CDT FOR
NORTHWESTERN BECKER...MAHNOMEN AND SOUTHEASTERN NORMAN COUNTIES...
    
AT 1117 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO
WAS LOCATED NEAR WAUBUN...OR 29 MILES NORTH OF DETROIT LAKES...MOVING
SOUTHEAST AT 10 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...
  WAUBUN AND OGEMA AROUND 1130 PM CDT. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TORNADOES ARE EXTREMELY DIFFICULT TO SEE AND CONFIRM AT NIGHT. DO NOT
WAIT TO SEE OR HEAR THE TORNADO. TAKE COVER NOW!

IF A TORNADO OR OTHER SEVERE WEATHER IS SPOTTED...REPORT IT TO THE
NATIONAL WEATHER SERVICE OR YOUR LOCAL NEAREST LAW ENFORCEMENT AGENCY
WHO WILL SEND YOUR REPORT. THIS ACT MAY SAVE LIVES OF OTHERS IN THE
PATH OF DANGEROUS WEATHER.

&&

LAT...LON 4695 9579 4723 9637 4743 9608 4731 9556
      4715 9555
TIME...MOT...LOC 0417Z 299DEG 10KT 4722 9601 

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

$$

JH

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 28, 7:48 PM CDTSpecial Weather StatementFGFPolk, Red Lake42 min
Aug 28, 7:49 PM CDTSpecial Weather StatementFGFLake of the Woods56 min
Aug 28, 8:03 PM CDTTornado Warning Tornado observedFGFPolk, Red Lake27 min
Aug 28, 8:27 PM CDTTornado WarningFGFMahnomen, Polk, Red Lake33 min
Aug 28, 8:50 PM CDTTornado WarningFGFMahnomen, Norman, Polk25 min
Aug 28, 9:05 PM CDTSevere Thunderstorm WarningFGFMahnomen, Norman, Polk40 min
Aug 28, 9:12 PM CDTTornado Warning Tornado observedConsiderable damage threatFGFNorman, Polk48 min
Aug 28, 9:41 PM CDTAreal Flood AdvisoryFGFNorman, Polk7 hr
Aug 28, 9:56 PM CDTTornado Warning Tornado observedFGFNorman49 min
Aug 28, 10:37 PM CDTFlash Flood WarningFGFMahnomen, Norman, Polk10 hr
Aug 28, 11:31 PM CDTSevere Thunderstorm WarningFGFBecker, Clay, Clearwater, Mahnomen, Norman59 min
Aug 29, 2:11 AM CDTSpecial Weather StatementFGFOtter Tail, Wadena64 min
Aug 29, 3:29 AM CDTSpecial Weather StatementFGFOtter Tail61 min
Aug 29, 4:36 AM CDTAreal Flood AdvisoryFGFBeltrami, Clearwater, Hubbard3 hr

Nearby

Tornado Warnings in Minnesota, 2016Every tornado warning in 2016Tornadoes in 2016

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.