Alert archive / Minnesota / Severe Thunderstorm Warnings in 1999

Severe Thunderstorm Warning 46, NWS Grand Forks, ND

June 5, 1999Clay County, Minnesota

NWS Grand Forks, ND issued this severe thunderstorm warning at Jun 5, 1999, 3:11 AM CDT for Clay County, Minnesota. It was in force for 34 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jun 5, 1999, 3:11 AM CDT (08:11 UTC)
Expired: Jun 5, 1999, 3:45 AM CDT
In force: 34 min
Issued by: NWS Grand Forks, ND
Area: Whole counties

County Clay County, MN

The radar

The Fargo/Grand Forks radar (KMVX), 95 km from the middle of the area, began a volume at 08:14 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.

Issued	Product	Office	Lasted
Jun 5, 1:15 AM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Aberdeen, SD (KABR), launched 00:00Z, 8.2 hours before the alert went out and 266 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 2271 J/kg
Mixed-layer CIN: -27 J/kg
Mixed-layer LCL: 1570 m above ground
0-6 km bulk shear: 40 kt
0-1 km storm-relative helicity: 7 m²/s²
0-3 km storm-relative helicity: -7 m²/s²
Significant tornado parameter: -0.1
Supercell composite: -2.2

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Grand Forks, ND wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 5, 3:00 AM CDT, 11 minutes earlier.

Area forecast discussion, Jun 5, 3:00 AM CDT, 11 minutes before

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In the hours before

Local storm report, Jun 4, 10:38 PM CDT, 4 hours 33 minutes before

PRELIMINARY LOCAL STORM REPORT...CORRECTION
NATIONAL WEATHER SERVICE EASTERN NORTH DAKOTA/GRAND FORKS
1038 PM CDT FRI JUN 04 1999

TIME(CDT)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0447 PM    HIGHLANDING               MN   1.00 INCH HAIL
06/04/99   PENNINGTON

0551 PM    GULLY                     MN   0.75 INCH HAIL
06/04/99   POLK

0553 PM    GULLY                     MN   1.00 INCH HAIL
06/04/99   POLK

0603 PM    15W RINDAL                MN   1.00 INCH HAIL
06/04/99   NORMAN

0620 PM    ERSKINE                   MN   0.75 INCH HAIL
06/04/99   POLK

0642 PM    MCCINTOSH                 MN   1.00 INCH HAIL
06/04/99   POLK

0644 PM    MCCINTOSH                 MN   3.00 INCH HAIL
06/04/99   POLK

0655 PM    MCCINTOSH                 MN   1.00 INCH HAIL
06/04/99   POLK

0715 PM    GULLY                     MN   0.75 INCH HAIL
06/04/99   POLK

0734 PM    BAGLEY                    MN   0.75 INCH HAIL
06/04/99   CLEARWATER

0735 PM    CLEARBROOK                MN   0.75 INCH HAIL
06/04/99   CLEARWATER

0825 PM    2 E FOSSTON               MN   0.88 INCH HAIL
06/04/99   POLK

0838 PM    HARWOOD                   ND   0.75 INCH HAIL
06/04/99   CASS

0849 PM    TENSTRIKE                 MN   0.75 INCH HAIL
06/04/99   BELTRAMI

0912 PM    BLACKDUCK                 MN   0.88 INCH HAIL
06/04/99   BELTRAMI

0954 PM    3N BEMIDJI                MN   0.88 INCH HAIL
06/04/99   BELTRAMI

1005 PM    8N BEMIDJI                MN   0.75 INCH HAIL
06/04/99   BELTRAMI

1013 PM    TENSTRIKE                 MN   0.75 INCH HAIL
06/04/99   BELTRAMI

Local storm report, Jun 5, 2:05 AM CDT, 1 hour 6 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 5, 2:20 AM CDT	Severe Thunderstorm Warning	FGF	Richland, Sargent	50 min
Jun 4, 7:04 PM CDT	Severe Thunderstorm Warning	FGF	Polk	36 min
Jun 4, 10:51 PM CDT	Severe Thunderstorm Warning	FGF	Clay, Norman	34 min
Jun 4, 11:30 PM CDT	Severe Thunderstorm Warning	FGF	Clearwater, Mahnomen	35 min
Jun 4, 11:55 PM CDT	Severe Thunderstorm Warning	FGF	Becker	35 min
Jun 5, 12:06 AM CDT	Severe Thunderstorm Warning	FGF	Clearwater	34 min
Jun 5, 12:20 AM CDT	Severe Thunderstorm Warning	FGF	Hubbard	35 min
Jun 5, 12:55 AM CDT	Severe Thunderstorm Warning	FGF	Hubbard	50 min
Jun 5, 2:37 AM CDT	Severe Thunderstorm Warning	FGF	Grant, Wilkin	48 min
Jun 5, 2:56 AM CDT	Severe Thunderstorm Warning	FGF	Otter Tail	49 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 1999 Every severe thunderstorm warning in 1999

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.