Alert archive / Minnesota / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 52, NWS Grand Forks, ND

June 9, 2002Becker County, Clay County, Minnesota

NWS Grand Forks, ND issued this severe thunderstorm warning at Jun 9, 2002, 6:29 AM CDT for Becker County, Clay County, Minnesota. It was in force for 61 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
Jun 9, 2002, 6:29 AM CDT (11:29 UTC)
Expired
Jun 9, 2002, 7:30 AM CDT
In force
61 min
Issued by
NWS Grand Forks, ND
Area
Counties, with a storm outline in the text

Counties Becker County, MN, Clay County, MN

The radar

The Fargo/Grand Forks radar (KMVX), 113 km from the middle of the area, began a volume at 11:31 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
Jun 9, 7:00 AM CDTHail 0.75Ogema, MN
Jun 9, 7:00 AM CDTHail 1.5Ogema, MN

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The nearest sounding before it

International Fa, MN (KINL), launched 00:00Z, 11.5 hours before the alert went out and 276 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 2002-06-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 2002-06-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 40 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
2278 m above ground
0-6 km bulk shear
40 kt
0-1 km storm-relative helicity
40 m²/s²
0-3 km storm-relative helicity
68 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.

000 
WUUS53 KFGF 091129
SVRFAR
MNC005-027-091230-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS
629 AM CDT SUN JUN 9 2002

THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...

  BECKER COUNTY IN NORTHWEST MINNESOTA AND
  CLAY COUNTY IN NORTHWEST MINNESOTA.

* UNTIL 730 AM CDT.

* AT 626 AM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THE
  LEADING EDGE OF SEVERE THUNDERSTORMS ALONG A LINE EXTENDING FROM 21
  MILES NORTH OF DETROIT LAKES TO 8 MILES SOUTHEAST OF FARGO...
  MOVEMENT WAS TO THE SOUTHEAST AT 20 MPH.

* SEVERE THUNDERSTORMS WILL BE NEAR...

  OGEMA AT 630 AM...
  MUSKODA AT 635 AM...
  WHITE EARTH AT 640 AM AND
  DOWNER AT 650 AM.

REMEMBER SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE
TORNADOES WITH LITTLE OR NO ADVANCE WARNING.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 700 AM SUNDAY
MORNING FOR EASTERN NORTH DAKOTA.

LAT...LON 4714 9598 4689 9674 4669 9638 4690 9539


8

NNNN

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 8, 10:59 PM CDTSevere Thunderstorm WarningFGFNorman46 min
Jun 9, 12:07 AM CDTSevere Thunderstorm WarningFGFNorman38 min
Jun 9, 12:37 AM CDTSevere Thunderstorm WarningFGFPolk38 min
Jun 9, 1:30 AM CDTSevere Thunderstorm WarningFGFBecker, Mahnomen45 min
Jun 9, 2:36 AM CDTFlash Flood WarningFGFPolk6 hr
Jun 9, 3:31 AM CDTSevere Thunderstorm WarningFGFMahnomen, Norman44 min
Jun 9, 4:14 AM CDTSevere Thunderstorm WarningFGFBecker, Clay, Mahnomen, Norman46 min
Jun 9, 4:16 AM CDTFlash Flood WarningFGFNorman6 hr
Jun 9, 4:57 AM CDTSevere Thunderstorm WarningFGFBecker, Clay, Mahnomen, Norman63 min
Jun 9, 5:04 AM CDTFlash Flood WarningFGFMahnomen6 hr
Jun 9, 5:23 AM CDTFlash Flood WarningFGFPennington, Polk, Red Lake6 hr
Jun 9, 5:53 AM CDTTornado WarningFGFBecker, Clay37 min
Jun 9, 5:57 AM CDTSevere Thunderstorm WarningFGFMahnomen, Norman63 min
Jun 9, 6:07 AM CDTFlash Flood WarningFGFBecker, Clay6 hr
Jun 9, 7:35 AM CDTSevere Thunderstorm WarningFGFBecker55 min
Jun 9, 7:47 AM CDTSevere Thunderstorm WarningFGFClearwater43 min
Jun 9, 7:53 AM CDTSevere Thunderstorm WarningFGFBeltrami, Hubbard67 min
Jun 9, 7:56 AM CDTFlash Flood WarningFGFClearwater4 hr
Jun 9, 8:28 AM CDTSevere Thunderstorm WarningFGFBecker, Clearwater62 min
Jun 9, 10:51 AM CDTSevere Thunderstorm WarningFGFPolk39 min
Jun 9, 11:33 AM CDTFlash Flood WarningFGFPennington, Polk, Red Lake6 hr
Jun 9, 1:48 PM CDTSevere Thunderstorm WarningFGFPolk42 min
Jun 9, 5:25 PM CDTFlash Flood WarningFGFMarshall, Pennington, Red Lake4 hr

Nearby

Severe Thunderstorm Warnings in Minnesota, 2002Every severe thunderstorm warning in 2002

Sources

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