Alert archive / Minnesota / Tornado Warnings in 2023

Tornado Warning 9, NWS Grand Forks, ND

June 24, 2023Mahnomen County, Polk County, Minnesota

NWS Grand Forks, ND issued this tornado warning at Jun 24, 2023, 5:10 PM CDT for Mahnomen County, Polk County, Minnesota. It was in force for 50 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
Jun 24, 2023, 5:10 PM CDT (22:10 UTC)
Expired
Jun 24, 2023, 6:00 PM CDT
In force
50 min
Issued by
NWS Grand Forks, ND
Area
Storm-based polygon
Tornado
Radar indicated
Hail
0.75 in

Counties Mahnomen County, MN, Polk County, MN

The radar

The Fargo/Grand Forks radar (KMVX), 109 km from the middle of the area, began a volume at 22:14 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
Jun 24, 3:42 PM CDTTornado WatchSPC5 hr

The nearest sounding before it

International Fa, MN (KINL), launched 12:00Z, 10.2 hours before the alert went out and 231 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 12:00Z on 2023-06-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 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 12:00Z on 2023-06-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -136 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1165 m above ground
0-6 km bulk shear
26 kt
0-1 km storm-relative helicity
-136 m²/s²
0-3 km storm-relative helicity
159 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

585 
WFUS53 KFGF 242210
TORFGF
MNC087-119-242300-
/O.NEW.KFGF.TO.W.0009.230624T2210Z-230624T2300Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Grand Forks ND
510 PM CDT Sat Jun 24 2023

The National Weather Service in Grand Forks has issued a

* Tornado Warning for...
  Southern Polk County in northwestern Minnesota...
  Northwestern Mahnomen County in northwestern Minnesota...

* Until 600 PM CDT.
    
* At 508 PM CDT, a severe thunderstorm capable of producing a tornado
  was located near Mahnomen, or 38 miles north of Detroit Lakes,
  moving north at 25 mph.

  HAZARD...Tornado.

  SOURCE...Radar indicated rotation.

  IMPACT...Flying debris will be dangerous to those caught without 
           shelter. Mobile homes will be damaged or destroyed. 
           Damage to roofs, windows, and vehicles will occur.  Tree 
           damage is likely.

* Locations impacted include...
  Bejou.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

&&

LAT...LON 4733 9584 4732 9595 4737 9601 4760 9592
      4755 9571
TIME...MOT...LOC 2208Z 197DEG 21KT 4737 9592 

TORNADO...RADAR INDICATED
MAX HAIL SIZE...<.75 IN

$$

Lynch

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 24, 3:06 PM CDTSpecial Weather StatementFGFNorman39 min
Jun 24, 3:14 PM CDTSpecial Weather StatementFGFBecker46 min
Jun 24, 3:23 PM CDTTornado Warning Tornado observedFGFBecker, Mahnomen, Norman37 min
Jun 24, 3:26 PM CDTTornado Warning Tornado observedFGFNorman34 min
Jun 24, 3:45 PM CDTTornado WarningFGFNorman, Polk45 min
Jun 24, 3:58 PM CDTTornado Warning Tornado observedFGFBecker, Mahnomen, Norman47 min
Jun 24, 4:14 PM CDTTornado WarningFGFNorman, Polk46 min
Jun 24, 4:37 PM CDTTornado Warning Tornado observedFGFMahnomen, Polk38 min
Jun 24, 4:42 PM CDTSevere Thunderstorm WarningFGFBecker, Otter Tail, Wadena35 min
Jun 24, 4:46 PM CDTTornado WarningFGFPolk27 min
Jun 24, 5:16 PM CDTSpecial Weather StatementFGFPolk29 min
Jun 24, 5:19 PM CDTSpecial Weather StatementFGFWadena26 min
Jun 24, 5:58 PM CDTSevere Thunderstorm WarningFGFMahnomen, Polk47 min
Jun 24, 6:35 PM CDTTornado WarningFGFPolk25 min
Jun 24, 6:40 PM CDTSevere Thunderstorm WarningFGFHubbard, Wadena65 min

Nearby

Tornado Warnings in Minnesota, 2023Every tornado warning in 2023Tornadoes in 2023

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.