Alert archive / Minnesota / Tornado Warnings in 2013

Tornado Warning 15, NWS Grand Forks, ND

August 26, 2013Wadena County, Minnesota

NWS Grand Forks, ND issued this tornado warning at Aug 26, 2013, 8:25 PM CDT for Wadena County, Minnesota. It was in force for 35 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Aug 26, 2013, 8:25 PM CDT (01:25 UTC)
Expired
Aug 26, 2013, 9:00 PM CDT
In force
35 min
Issued by
NWS Grand Forks, ND
Area
Storm-based polygon
Tornado
Radar indicated
Hail
1.75 in

County Wadena County, MN

The radar

The Minneapolis radar (KMPX), 199 km from the middle of the area, began a volume at 01:25 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.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Aug 26, 5:41 PM CDTSevere Thunderstorm WatchSPC7 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 1.4 hours before the alert went out and 198 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, Minneapolis, MN at 00:00Z on 2013-08-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2586 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, Minneapolis, MN at 00:00Z on 2013-08-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 152 square meters per square second.19395878Sfc1 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
2586 J/kg
Mixed-layer CIN
-114 J/kg
Mixed-layer LCL
1399 m above ground
0-6 km bulk shear
35 kt
0-1 km storm-relative helicity
152 m²/s²
0-3 km storm-relative helicity
164 m²/s²
Significant tornado parameter
0.7
Supercell composite
15.4

Open this sounding in Storm Lab

The text

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

958 
WFUS53 KFGF 270125
TORFGF
MNC159-270200-
/O.NEW.KFGF.TO.W.0015.130827T0125Z-130827T0200Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
825 PM CDT MON AUG 26 2013

THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHEASTERN WADENA COUNTY IN CENTRAL MINNESOTA...

* UNTIL 900 PM CDT

* AT 822 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A
  TORNADO WAS LOCATED NEAR VERNDALE...AND MOVING EAST AT 30 MPH.

  HAZARD...TORNADO AND GOLF BALL SIZE HAIL.

  SOURCE...RADAR INDICATED ROTATION.

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

* THIS DANGEROUS STORM WILL BE NEAR...
  STAPLES AIRPORT AROUND 840 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 IN GRAND
FORKS.

&&

LAT...LON 4637 9473 4636 9486 4636 9508 4651 9504
      4647 9477 4640 9477 4639 9473
TIME...MOT...LOC 0125Z 284DEG 25KT 4640 9494

TORNADO...RADAR INDICATED
HAIL...1.75IN

$$

HOPPES/HOPKINS
2 follow-up statements
108 
WWUS53 KFGF 270135
SVSFGF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
835 PM CDT MON AUG 26 2013

MNC159-270200-
/O.CON.KFGF.TO.W.0015.000000T0000Z-130827T0200Z/
WADENA MN-
835 PM CDT MON AUG 26 2013

...A TORNADO WARNING REMAINS IN EFFECT FOR SOUTHEASTERN WADENA COUNTY
UNTIL 900 PM CDT...

AT 832 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO
WAS LOCATED NEAR STAPLES AIRPORT...AND MOVING EAST AT 30 MPH.

HAZARD...TORNADO AND GOLF BALL SIZE HAIL.

SOURCE...RADAR INDICATED ROTATION.

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

THIS DANGEROUS STORM WILL BE NEAR...
  STAPLES AIRPORT AROUND 840 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 IN GRAND
FORKS.

&&

LAT...LON 4637 9473 4636 9486 4636 9505 4651 9501
      4647 9477 4640 9477 4639 9473
TIME...MOT...LOC 0135Z 284DEG 25KT 4638 9484

TORNADO...RADAR INDICATED
HAIL...1.75IN

$$

HOPPES/HOPKINS
443 
WWUS53 KFGF 270157
SVSFGF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
857 PM CDT MON AUG 26 2013

MNC159-270207-
/O.EXP.KFGF.TO.W.0015.000000T0000Z-130827T0200Z/
WADENA MN-
857 PM CDT MON AUG 26 2013

...THE TORNADO WARNING FOR SOUTHEASTERN WADENA COUNTY WILL EXPIRE AT
900 PM CDT...

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

ADDITIONAL STRONG THUNDERSTORMS ARE STILL POSSIBLE...AND A SEVERE 
THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 100 AM CDT TUESDAY 
MORNING.

LAT...LON 4637 9473 4636 9486 4636 9505 4651 9501
      4647 9477 4640 9477 4639 9473
TIME...MOT...LOC 0157Z 284DEG 25KT 4635 9465

$$

HOPPES/HOPKINS

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 26, 7:33 PM CDTAreal Flood AdvisoryFGFOtter Tail, Wadena3 hr
Aug 26, 7:41 PM CDTTornado WarningFGFOtter Tail, Wadena49 min

Nearby

Tornado Warnings in Minnesota, 2013Every tornado warning in 2013Tornadoes in 2013

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.