Alert archive / Minnesota / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 21, NWS Grand Forks, ND

May 24, 2019Norman County, Polk County, Minnesota

NWS Grand Forks, ND issued this severe thunderstorm warning at May 24, 2019, 8:03 PM CDT for Norman County, Polk County, Minnesota. It was in force for 42 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
May 24, 2019, 8:03 PM CDT (01:03 UTC)
Expired
May 24, 2019, 8:45 PM CDT
In force
42 min
Issued by
NWS Grand Forks, ND
Area
Storm-based polygon
Tornado
Possible
Hail
1.5 in
Wind
70.0 mph

Counties Norman County, MN, Polk County, MN

The radar

The Fargo/Grand Forks radar (KMVX), 83 km from the middle of the area, began a volume at 01:02 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
May 24, 8:15 PM CDTHAIL 1.52 Nnw Gary, MNREPORT VIA MPING WITH TIME ESTIMATED BASED ON RADAR

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, 1.1 hours before the alert went out and 258 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 2019-05-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2 joules per kilogram.LCLEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, International Fa, MN at 00:00Z on 2019-05-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 443 square meters per square second.1939587897117Sfc1 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
2 J/kg
Mixed-layer CIN
0 J/kg
Mixed-layer LCL
462 m above ground
0-6 km bulk shear
51 kt
0-1 km storm-relative helicity
443 m²/s²
0-3 km storm-relative helicity
395 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

659 
WUUS53 KFGF 250103
SVRFGF
MNC107-119-250145-
/O.NEW.KFGF.SV.W.0021.190525T0103Z-190525T0145Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Eastern ND/Grand Forks ND
803 PM CDT Fri May 24 2019

The National Weather Service in Grand Forks has issued a

* Severe Thunderstorm Warning for...
  Northeastern Norman County in northwestern Minnesota...
  Southeastern Polk County in northwestern Minnesota...

* Until 845 PM CDT.

* At 803 PM CDT, a severe thunderstorm was located near Ada, or 34
  miles northeast of Fargo, moving northeast at 35 mph.

  HAZARD...70 mph wind gusts and ping pong ball size hail.

  SOURCE...Radar indicated.

  IMPACT...People and animals outdoors will be injured. Expect hail 
           damage to roofs, siding, windows, and vehicles. Expect 
           considerable tree damage. Wind damage is also likely to 
           mobile homes, roofs, and outbuildings.

* This severe thunderstorm will be near...
  Twin Valley around 815 PM CDT.
  Gary around 820 PM CDT.
  Flaming around 825 PM CDT.
  Waukon around 830 PM CDT.
  Ranum around 835 PM CDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 4725 9607 4724 9650 4741 9654 4762 9607
TIME...MOT...LOC 0103Z 239DEG 29KT 4730 9644 

TORNADO...POSSIBLE
HAIL...1.50IN
WIND...70MPH
 
$$

GG
3 follow-up statements
031 
WWUS53 KFGF 250118
SVSFGF

Severe Weather Statement
National Weather Service Eastern ND/Grand Forks ND
818 PM CDT Fri May 24 2019

MNC107-119-250145-
/O.CON.KFGF.SV.W.0021.000000T0000Z-190525T0145Z/
Norman MN-Polk MN-
818 PM CDT Fri May 24 2019

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 845 PM CDT
FOR NORTHEASTERN NORMAN AND SOUTHEASTERN POLK COUNTIES...

At 818 PM CDT, a severe thunderstorm was located over Gary, or 41
miles northeast of Fargo, moving northeast at 35 mph.

HAZARD...70 mph wind gusts and ping pong ball size hail.

SOURCE...Radar indicated.

IMPACT...People and animals outdoors will be injured. Expect hail 
         damage to roofs, siding, windows, and vehicles. Expect 
         considerable tree damage. Wind damage is also likely to 
         mobile homes, roofs, and outbuildings.

This severe storm will be near...
  Gary around 820 PM CDT.
  Flaming around 825 PM CDT.
  Waukon around 830 PM CDT.
  Ranum around 835 PM CDT.
  Rindal around 840 PM CDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 4725 9607 4727 9636 4747 9638 4762 9607
TIME...MOT...LOC 0118Z 239DEG 29KT 4736 9629 

TORNADO...POSSIBLE
HAIL...1.50IN
WIND...70MPH
 
$$

GG
407 
WWUS53 KFGF 250127
SVSFGF

Severe Weather Statement
National Weather Service Eastern ND/Grand Forks ND
827 PM CDT Fri May 24 2019

MNC107-119-250145-
/O.CON.KFGF.SV.W.0021.000000T0000Z-190525T0145Z/
Norman MN-Polk MN-
827 PM CDT Fri May 24 2019

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 845 PM CDT
FOR NORTHEASTERN NORMAN AND SOUTHEASTERN POLK COUNTIES...

At 827 PM CDT, a severe thunderstorm was located over Ranum, or 44
miles north of Detroit Lakes, moving northeast at 35 mph.

HAZARD...70 mph wind gusts and ping pong ball size hail.

SOURCE...Radar indicated.

IMPACT...People and animals outdoors will be injured. Expect hail 
         damage to roofs, siding, windows, and vehicles. Expect 
         considerable tree damage. Wind damage is also likely to 
         mobile homes, roofs, and outbuildings.

This severe storm will be near...
  Rindal around 830 PM CDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 4732 9607 4734 9625 4751 9627 4762 9607
TIME...MOT...LOC 0127Z 244DEG 29KT 4743 9614 

TORNADO...POSSIBLE
HAIL...1.50IN
WIND...70MPH
 
$$

GG
470 
WWUS53 KFGF 250141
SVSFGF

Severe Weather Statement
National Weather Service Eastern ND/Grand Forks ND
841 PM CDT Fri May 24 2019

MNC107-119-250151-
/O.EXP.KFGF.SV.W.0021.000000T0000Z-190525T0145Z/
Norman MN-Polk MN-
841 PM CDT Fri May 24 2019

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN NORMAN AND
SOUTHEASTERN POLK COUNTIES WILL EXPIRE AT 845 PM CDT...
        
The storm which prompted the warning has weakened below severe
limits, and has exited the warned area. Therefore, the warning will
be allowed to expire.

LAT...LON 4732 9607 4734 9625 4751 9627 4762 9607
TIME...MOT...LOC 0141Z 239DEG 29KT 4748 9601 

$$

GG

The office that day

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

IssuedProductOfficeCountiesLasted
May 24, 7:12 PM CDTTornado WarningFGFBecker, Mahnomen, Norman33 min
May 24, 7:44 PM CDTTornado Warning Tornado observedFGFClearwater, Mahnomen22 min
May 24, 7:52 PM CDTSevere Thunderstorm WarningFGFPennington, Polk, Red Lake27 min
May 24, 8:44 PM CDTSevere Thunderstorm WarningFGFClearwater, Mahnomen, Polk46 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 2019Every severe thunderstorm warning in 2019

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.