Alert archive / Minnesota / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 265, NWS Grand Forks, ND

September 2, 2000Becker County, Clearwater County, Minnesota

NWS Grand Forks, ND issued this severe thunderstorm warning at Sep 2, 2000, 5:36 PM CDT for Becker County, Clearwater County, Minnesota. It was in force for 29 min. 1 report came from inside the area while it was in force.

The area

The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties, with what was reported inside it.

The facts

Issued: Sep 2, 2000, 5:36 PM CDT (22:36 UTC)
Expired: Sep 2, 2000, 6:05 PM CDT
In force: 29 min
Issued by: NWS Grand Forks, ND
Area: Whole counties; the outline is the Mesonet’s reconstruction

Counties Becker County, MN, Clearwater County, MN

The radar

The Fargo/Grand Forks radar (KMVX), 150 km from the middle of the area, began a volume at 22:40 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

Time	Report	Where	Remark
Sep 2, 5:50 PM CDT	Hail 0.75	Ponsford, 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 12:00Z, 10.6 hours before the alert went out and 225 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 552 m above ground
0-6 km bulk shear: 34 kt
0-1 km storm-relative helicity: 27 m²/s²
0-3 km storm-relative helicity: 157 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 022240
SVRFAR
WUUS53 KFGF 022236

MNC005-029-022305-

BULLETIN - EAS ACTIVATION REQUESTED...CORRECTED FOR STORM SPEED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE EASTERN ND-GRAND FORKS
536 PM CDT SAT SEP 2 2000

THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHEASTERN BECKER COUNTY IN NORTHWEST MINNESOTA...
  SOUTHERN CLEARWATER COUNTY IN NORTHWEST MINNESOTA...

* UNTIL 605 PM CDT

* AT 534 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 4 MILES NORTHWEST OF MANY POINT LAKE...OR ABOUT
  24 MILES NORTHEAST OF DETROIT LAKES...MOVEMENT WAS TO THE EAST AT
  35 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  BAD MEDICINE LAKE AT 540 PM CDT...
  TWO INLETS AT 545 PM CDT...

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

LAT...LON 4715 9553 4700 9559 4698 9521 4738 9525

NNNN

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 Sep 2, 3:25 PM CDT, 2 hours 11 minutes earlier.

Area forecast discussion, Sep 2, 3:25 PM CDT, 2 hours 11 minutes before

FORECAST DISCUSSION FOR EASTERN NORTH DAKOTA AND NORTHWEST MINNESOTA
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
325 PM CDT SAT SEP 2 2000

FORECAST PROBLEM FOR TONIGHT AND SUNDAY IS PCPN. LATEST VIS AND IR
SATELLITE IMAGERY SHOWS CWFA COVERED IN IFR DECK WITH COLDEST CLOUD
TOPS WORKING INTO S RRV. LATEST MSAS SFC PRESSURE ANALYSIS HAS LOW
CENTERED IN SE MT WITH TROF EXTENDING THROUGH W SD TO ANOTHER LOW IN
EXTREME NE NEBRASKA. CWFA REMAINS IN MOIST E-SE FLOW. CONVECTION
STILL FIRING ALONG 850MB WARM FRONT WHICH ACCORDING TO 12Z UA
ANALYSIS EXTENDING THROUGH SE ND INTO WC MN. KMVX HAS REMAINDER OF
PCPN EXTENDING NE FROM THESE TSRA INTO NW MN. WHEN COMPARING MSAS
PRESSURE ANALYSIS TO MODELS...ETA MATCHES BEST WITH AVN ALSO CLOSE.
THEREFORE...PRIMARILY UTILIZED ETA FOR FORECAST. MODELS KEEP PCPN
POTENTIAL OVER CWFA AS JET CONTINUES TO PUNCH N INTO ND AND SFC
INSTABILITY PARAMETERS CONTINUE TO DESTABILIZE 00Z. THEREFORE...
EXPECT TSRA TO CONTINUE THIS EVENING...WITH ISOLD SVR AS
WELL...ESPECIALLY IN S CWFA. BEST INSTABILITY SHIFTS INTO MN
OVERNIGHT...WITH LINGERING PCPN POTENTIAL IN THE MORNING FOR MN SIDE
OF CWFA. WILL NEED TO KEEP URBAN AND SMALL STREAM FLOOD ADVISORY
OUT FOR SE ND AND EXTEND IT INTO PART OF WC MN...AS LINE OF HEAVIEST
CONVECTION SLOWLY MOVING E AND NE...INCLUDING THE FARGO/MOORHEAD
AREA.

FORECAST PROBLEM FOR THIRD AND FOURTH PERIODS IS TEMPS. WITH
EASTERLY FLOW CONTINUING...WITH NO STRONG COLD FRONT ANTICIPATED TO
SCOUR OUT THE LOW LEVEL MOISTURE...CAN EXPECT MO CLDY SKY AND COOLER
TEMPS TO REMAIN. THEREFORE...KEPT TEMPS IN THE NORMAL TO SLIGHTLY
BELOW NORMAL RANGE.

EXTENDED...INITIALLY MODELS IN FAIR AGREEMENT WITH RIDGE AXIS
SHIFTING INTO MN PUTTING FA IN SW FLOW ALOFT THROUGH FIRST HALF OF
WORK WEEK. MODELS THEN DIVERGE. UK INITIALLY IN AGREEMENT WITH OTHER
MODELS...THEN RETROGRESSES BROAD UPPER RIDGE AXIS BACK OVR N CENTRAL
STATES WHICH SEEMS INCONSISTENT. OTHERWISE...TREND IS TO TRACK
TROF THROUGH FA WITH MRF SLOWEST BETWEEN CAN/EURO AND NOGAPS.
THEN...THE RELATIVELY STATIONARY HIGH PLAINS SFC LOW BEGINS TO PUSH
EAST...AND WITH THE SW FLOW EJECTING ENERGY NE...WILL CONTINUE
MENTION OF PCPN DURING THIS TIME FRAME. WITH PASSAGE OF TROF AND
APPROACH OF SFC HIGH...WILL CARRY DRY FCST INTO SATURDAY.
THICKNESS AND H8 TEMPS INDICATE SEASONAL TEMPS INTO MIDWEEK...THEN A
COOLDOWN FOLLOWING CFP AFT >THURSDAY.

.FGF...NONE

NG/VOELKER

In the hours before

Local storm report, Sep 2, 4:42 PM CDT, 54 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE EASTERN NORTH DAKOTA/GRAND FORKS
442 PM CDT SAT SEP 02 2000

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

1140 AM    6 S FINGAL                ND   1 INCH HAIL
09/02/00   BARNES

1153 AM    8 NE ALICE                ND   1 INCH HAIL
09/02/00   CASS

1205 PM    4 N EMBDEN                ND   .88 INCH HAIL
09/02/00   CASS

1233 PM    3 W FT RANSOM             ND   .75 INCH HAIL
09/02/00   RANSOM

1245 PM    2 SW LUCCA                ND   .88 INCH HAIL
09/02/00   BARNES

1255 PM    4 W ALICE                 ND   .88 INCH HAIL
09/02/00   CASS

0145 PM    1 E ENDERLIN              ND   1 INCH HAIL
09/02/00   RANSOM

0150 PM    8 NW GWINNER              ND   .75 INCH HAIL
09/02/00   SARGENT

0220 PM    15 N MC LEOD              ND   .75 INCH HAIL
09/02/00   RANSOM

0230 PM    5 S LEONARD               ND   .75 INCH HAIL
09/02/00   RICHLAND

0310 PM    5 S MOORHEAD              MN   1 INCH HAIL
09/02/00   CLAY

0325 PM    2 N GLYNDON               MN   .75 INCH HAIL
09/02/00   CLAY

0345 PM    13 E GWINNER              ND   1 INCH HAIL
09/02/00   SARGENT

0352 PM    1 E HORACE                ND   .75 INCH HAIL
09/02/00   CASS

0355 PM    4 W KINDRED               ND   .75 INCH HAIL
09/02/00   CASS

0355 PM    4 SW ELLIOTT              ND   1 INCH HAIL
09/02/00   RANSOM

N

Local storm report, Sep 2, 5:00 PM CDT, 36 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE EASTERN NORTH DAKOTA/GRAND FORKS
500 PM CDT SAT SEP 02 2000

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

0350 PM    8 S LISBON                ND   1 INCH HAIL
09/02/00   RANSOM

0405 PM    LISBON                    ND   .75 INCH HAIL
09/02/00   RANSOM

0405 PM    5 SW LISBON               ND   1.75 INCH HAIL
09/02/00   RANSOM

N

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 2, 2:43 PM CDT	Severe Thunderstorm Warning	FGF	Clay	32 min
Sep 2, 3:15 PM CDT	Severe Thunderstorm Warning	FGF	Clay	30 min
Sep 2, 4:37 PM CDT	Severe Thunderstorm Warning	FGF	Clay	28 min
Sep 2, 4:44 PM CDT	Flash Flood Warning	FGF	Clay	4 hr
Sep 2, 5:07 PM CDT	Severe Thunderstorm Warning	FGF	Becker	28 min
Sep 2, 5:19 PM CDT	Severe Thunderstorm Warning	FGF	Mahnomen	31 min
Sep 2, 6:11 PM CDT	Severe Thunderstorm Warning	FGF	Hubbard	29 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 2000 Every severe thunderstorm warning in 2000

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.