Alert archive / Minnesota / Severe Thunderstorm Warnings in 1999

Severe Thunderstorm Warning 39, NWS Grand Forks, ND

June 4, 1999Becker County, Minnesota

NWS Grand Forks, ND issued this severe thunderstorm warning at Jun 4, 1999, 11:55 PM CDT for Becker 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 counties it named.

The facts

Issued: Jun 4, 1999, 11:55 PM CDT (04:55 UTC)
Expired: Jun 5, 1999, 12:30 AM CDT
In force: 35 min
Issued by: NWS Grand Forks, ND
Area: Whole counties

County Becker County, MN

The radar

The Fargo/Grand Forks radar (KMVX), 141 km from the middle of the area, began a volume at 04:57 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 4, 9:15 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

International Fa, MN (KINL), launched 00:00Z, 4.9 hours before the alert went out and 254 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: 1521 J/kg
Mixed-layer CIN: -28 J/kg
Mixed-layer LCL: 1248 m above ground
0-6 km bulk shear: 43 kt
0-1 km storm-relative helicity: 90 m²/s²
0-3 km storm-relative helicity: 176 m²/s²
Significant tornado parameter: 0.8
Supercell composite: 8.3

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KFAR 050455
SVRFAR
MNC005-050530-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
1155 PM CDT FRI JUN 4 1999

THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN BECKER COUNTY IN NORTHWESTERN MINNESOTA

* UNTIL 1230 AM CDT

* AT 1154 PM CDT... NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  A SEVERE THUNDERSTORM 17 MILES NORTH OF DETROIT LAKES OR 3 MILES
  SOUTH OF OGEMA... MOVING EAST AT 15 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  OGEMA AT 1201 AM CDT
  WHITE EARTH AT 1215 AM CDT

DAMAGING WIND...LARGE HAIL...DEADLY LIGHTNING AND TORNADOES ARE ALL
POSSIBLE IN SEVERE THUNDERSTORMS. SEEK SHELTER IN A REINFORCED
BUILDING IMMEDIATELY.

RA

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 4, 8:45 PM CDT, 3 hours 10 minutes earlier.

Area forecast discussion, Jun 4, 8:45 PM CDT, 3 hours 10 minutes before

FORECAST DISCUSSION FOR EASTERN NORTH DAKOTA AND NORTHWEST MINNESOTA
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
845 PM CDT FRI JUN 04 1999

FCST CONCERNS SVR WX THREAT. SVR WX CONTINUING ALONG NEARLY STATIONARY
BOUNDARY FROM EXT SE ND THROUGH NW MN. LOW LEVEL BOUNDARY INTERACTIONS
VIA KMVX-88D AND VIS IMAGERY HAS PLAYED A BIG PART IN SVR THIS EVENING.
FROM RUC MOIST CONVERGENCE CONTINUES AS BOUNDARY PROGGED TO MOVE LITTLE
OVERNIGHT ALONG WITH H8 THETA-E RIDGE SO CONVECTION TO CONTINUE WITH
SVR. TRAINING CELLS ALONG BOUNDARY MAY PROMPT NEED FOR SOME SORT FLOOD
ADVISORY/WARNING OVR NW MN AND WILL CONTINUE TO MONITOR CLOSELY.
POSSIBLE RELIEF LATER TONIGHT AS SHORWAVE LIFTING NORTH INCREASES
ORGANIZED CONVECTION TO OUR SOUTH...HOPEFULLY... NEW WATCH EXPECTED
SHORTLY AND WILL ISSUE UPDATE ACCORDINGLY.

.FGF...NONE.

VOELKER

In the hours before

Local storm report, Jun 4, 10:38 PM CDT, 1 hour 17 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

The office that day

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

Issued	Product	Office	Counties	Lasted
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 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
Jun 5, 3:11 AM CDT	Severe Thunderstorm Warning	FGF	Clay	34 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.