Alert archive / Minnesota / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 157, NWS Grand Forks, ND

July 25, 2000Otter Tail County, Minnesota

NWS Grand Forks, ND issued this severe thunderstorm warning at Jul 25, 2000, 3:04 PM CDT for Otter Tail County, Minnesota. It was in force for 31 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
Jul 25, 2000, 3:04 PM CDT (20:04 UTC)
Expired
Jul 25, 2000, 3:35 PM CDT
In force
31 min
Issued by
NWS Grand Forks, ND
Area
Whole counties; the outline is the Mesonet’s reconstruction

County Otter Tail County, MN

The radar

The Fargo/Grand Forks radar (KMVX), 164 km from the middle of the area, began a volume at 20:04 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
Jul 25, 3:10 PM CDTHail 1.75Perham, 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

Minneapolis, MN (KMPX), launched 12:00Z, 8.1 hours before the alert went out and 251 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, Minneapolis, MN at 12:00Z on 2000-07-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 158 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Minneapolis, MN at 12:00Z on 2000-07-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 0 square meters per square second.193958Sfc1 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
158 J/kg
Mixed-layer CIN
-126 J/kg
Mixed-layer LCL
797 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
0 m²/s²
0-3 km storm-relative helicity
-84 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.

289 
WUUS53 KFGF 252004
SVRFAR
MNC111-252035-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE EASTERN ND-GRAND FORKS
304 PM CDT TUE JUL 25 2000

THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHEASTERN OTTER TAIL COUNTY IN WEST CENTRAL MINNESOTA...

* UNTIL 335 PM CDT

* AT 258 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 3 MILES NORTHWEST OF BIG MCDONALD LAKE...OR
  ABOUT 14 MILES SOUTH OF DETROIT LAKES...MOVEMENT WAS TO THE EAST AT
  25 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  DENT AT 305 PM CDT...
  PERHAM AT 320 PM CDT...
  BUTLER AT 335 PM CDT...

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

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 800 PM CDT
TUESDAY EVENING FOR CENTRAL MINNESOTA.

LAT...LON 4669 9593 4652 9588 4646 9519 4671 9521

$$
VOELKER
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 Jul 25, 2:55 PM CDT, 9 minutes earlier.

Area forecast discussion, Jul 25, 2:55 PM CDT, 9 minutes before
FORECAST DISCUSSION FOR EASTERN NORTH DAKOTA AND NORTHWEST MINNESOTA
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
255 PM CDT TUE JUL 25 2000

FORECAST PROBLEM FOR TONIGHT IS PCPN. LATEST VIS SATELLITE IMAGERY
SHOWS VARIETY OF CLOUD DECKS OVER CWFA. KMVX HAS TSRAGR ALONG THE
COLD FRONT ALONG A BDE-DTL LINE AND OTHER TSRA IN NE ND. LATEST MSAS
SFC PRESSURE ANALYSIS HAS LOW PRESSURE TROF EXTENDING THROUGH NW MN
INTO SE ND. WHEN COMPARING CURRENT MSAS SFC PLOT TO MODELS...ETA
MATCHES BEST WITH AVN ALSO PRETTY CLOSE. SFC TROF AND UPPER LEVEL
TROF CONTINUE MOVING E OVERNIGHT...WITH BEST UVV MOVING E OF CWFA BY
MIDNIGHT. AS UPPER LEVEL TROF AND SHORTWAVE MOVE THROUGH...SFC
HEATING HAS BEEN ADDING TO DESTABLIZATION ALONG SFC COLD FRONT...AND
CURRENT LI'S IN THE -4 TO -10 RANGE. THEREFORE...EXPECT CONTINUED
POTENTIAL FOR SVR IN FAR E TO SE CWFA INTO THIS EVENING.
CONSEQUENTLY...WILL NOT CLEAR ANY COUNTIES FROM SVR WATCH AT THIS TIME.

FORECAST PROBLEM FOR SECOND THROUGH FOURTH PERIODS IS TEMPS. SFC
TROF MOVES E OF CWFA BY 12Z WED AS SFC HIGH PRESSURE RIDGE BUILDS
IN...AND UPPER LEVEL RIDGE MAINTAINS ITSELF OVER N PLAINS. AS A
RESULT...NO PCPN EXPECTED WITH TEMPS HOLDING AROUND NORMAL.

EXTENDED...MODELS CONTINUE TO ADVERTISE 5H RIDGE FROM SOUTHWESTERN
CONUS NORTH INTO THE WESTERN HIGH PLAINS. PERIODIC PIECES OF
SHORTWAVE ENERGY EJECTING FROM SEMI-PERMANENT TROUGH VICINITY OF
PACIFIC NW/BC COAST SHOULD DIVE SOUTHEAST ON AFOREMENTIONED DOWNWIND
SIDE OF RIDGE INTO NORTHERN PLAINS. MANY UNCERTAINTIES EXIST WITH
TIMING AND STRENGTH OF FEATURES. WITH MODEL TRACK RECORDS USUALLY
NOTORIOUSLY POOR IN THESE TYPE OF SITUATIONS...WILL INSERT SLIGHT
CHANCE OF THUNDER ACROSS THE SOUTH ON FRIDAY. OTHERWISE...WILL RIDE
WITH CONTINUITY AND LEAVE REMAINDER OF PERIOD DRY WITH NEAR SEASONAL
TEMPERATURES.

.FGF...SVR THUNDERSTORM WATCH #618 UNTIL 8 PM CDT FOR BELTRAMI...
OTTER TAIL...HUBBARD AND WADENA COUNTIES.

NG/BERG

In the hours before

Special weather statement, Jul 25, 11:53 AM CDT, 3 hours 11 minutes before
MNZ017-024-028-030>032-040-251850-

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
1153 AM CDT TUE JUL 25 2000

...SEVERE THUNDERSTORMS POSSIBLE ACROSS PORTIONS OF WEST CENTRAL
MINNESOTA THIS AFTERNOON...

SYNOPSIS...MOIST AND UNSTABLE AIR AHEAD OF A TROUGH OF LOW PRESSURE
COULD TRIGGER SCATTERED SEVERE THUNDERSTORMS THIS AFTERNOON AND
EVENING.

AREA OF CONCERN...A SLIGHT RISK OF SEVERE THUNDERSTORMS ARYE POSSIBLE
THIS AFTERNOON ALONG AND EAST OF A NORCROSS TO FERGUS FALLS TO
DETROIT LAKES TO WASKISH LINE.

TIME...START TIME AFTER 1 PM UNTIL 8 PM.

TYPE OF HAZARD...LARGE HAIL AND STRONG WIND.

DJK

NNNN
Local storm report, Jul 25, 2:46 PM CDT, 18 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE EASTERN NORTH DAKOTA/GRAND FORKS
246 PM CDT TUE JUL 25 2000

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

1255 PM    30 E MAHNOMEN             MN   1 INCH HAIL
07/25/00   CLEARWATER

0115 PM    LAKE ITASCA               MN   .75 INCH HAIL
07/25/00   CLEARWATER

0127 PM    10 E HAWLEY               MN   TORNADO
07/25/00   BECKER

0130 PM    BEMIDJI                   MN   1 INCH HAIL
07/25/00   BELTRAMI

0141 PM    ROLLAG                    MN   2.75 INCH HAIL
07/25/00   CLAY

0230 PM    WAUBUN                    MN   .75 INCH HAIL
07/25/00   MAHNOMEN

0240 PM    SHOREHAM                  MN   .75 INCH HAIL
07/25/00   BECKER

NNNN

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 24, 11:43 PM CDTSevere Thunderstorm WarningFGFWilkin32 min
Jul 25, 12:11 AM CDTSevere Thunderstorm WarningFGFOtter Tail29 min
Jul 25, 12:35 PM CDTSevere Thunderstorm WarningFGFBeltrami, Clearwater30 min
Jul 25, 12:40 PM CDTSevere Thunderstorm WarningFGFMahnomen30 min
Jul 25, 1:17 PM CDTSevere Thunderstorm WarningFGFBecker, Clay28 min
Jul 25, 1:48 PM CDTSevere Thunderstorm WarningFGFHubbard32 min
Jul 25, 2:37 PM CDTSevere Thunderstorm WarningFGFBecker, Otter Tail28 min
Jul 25, 3:42 PM CDTSevere Thunderstorm WarningFGFOtter Tail28 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 2000Every 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.