Alert archive / Minnesota / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 166, NWS Grand Forks, ND

July 19, 2001Clay County, Minnesota

NWS Grand Forks, ND issued this severe thunderstorm warning at Jul 19, 2001, 1:28 AM CDT for Clay County, Minnesota. It was in force for 47 min. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: Jul 19, 2001, 1:28 AM CDT (06:28 UTC)
Expired: Jul 19, 2001, 2:15 AM CDT
In force: 47 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 06:27 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
Jul 19, 2:25 AM CDT	Thunderstorm Wind	Hawley, MN	Tree branches were blown down.

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

Aberdeen, SD (KABR), launched 00:00Z, 6.5 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: 4034 J/kg
Mixed-layer CIN: -17 J/kg
Mixed-layer LCL: 1645 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: -14 m²/s²
0-3 km storm-relative helicity: 40 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 1.5

Open this sounding in Storm Lab

The text

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

000 
WUUS53 KFGF 190628
SVRFAR

MNC027-190715-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE EASTERN ND-GRAND FORKS
128 AM CDT THU JUL 19 2001

THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...

  NORTHEASTERN CLAY COUNTY IN NORTHWEST MINNESOTA.

* UNTIL 215 AM CDT.

* AT 122 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 2 MILES WEST OF FELTON...OR ABOUT 19 MILES
  NORTHEAST OF FARGO...MOVEMENT WAS TO THE NORTHEAST AT 25 MPH.

* THE SEVERE THUNDERSTORM WILL REMAIN IN RURAL AREAS OF

  NORTHEASTERN CLAY COUNTY.

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

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 300 AM CDT
THURSDAY MORNING FOR NORTHWESTERN MINNESOTA. A SEVERE THUNDERSTORM
WATCH ALSO REMAINS IN EFFECT UNTIL 300 AM CDT THURSDAY MORNING FOR
SOUTHEAST NORTH DAKOTA.


$$

14

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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 18, 8:29 PM CDT, 4 hours 59 minutes earlier.

Area forecast discussion, Jul 18, 8:29 PM CDT, 4 hours 59 minutes before

FORECAST DISCUSSION FOR EASTERN NORTH DAKOTA AND NORTHWEST MINNESOTA
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
829 PM CDT WED JUL 18 2001

...DUE TO ONGOING SVR WEATHER WL BE BRIEF...

MSAS AND SFC ANALYSIS SHOWING BEST MOIST CONVERGENCE EXTENDING FROM
E OF GFK TO NR DVL ATTM. SFC WARM FRONT CONT TO MOVE N THRU SE ND
AND INTO NW MN PROVIDING FOCUS FOR ONGOING CONVECTION. ALTHOUGH BEST
FOCUS E OF DVL AREA ATTM...TSTMS CONT JUST E OF THIS AREA AND AM
HESITANT TO DROP WATCH THERE BEFORE EXPIRATION TIME. THUS WL KEEP
TORNADO WATCHES GOING UNTIL 3Z THIS AREA.

FFA LOCATIONS LOOK REASONABLE...AND WL CONT AS PREVIOUSLY FORECAST.
ALL SAID...NO BIG CHANGES NEEDED ATTM. WL SEND EVENING UPDATE AFTER
3Z.

.FGF...FLASH FLOOD WATCH UNTIL MIDNIGHT ALONG AND NORTH OF A DVL-GFK
LINE...FOR REST OF FA OVERNIGHT.

RJT

In the hours before

Special weather statement, Jul 18, 10:19 PM CDT, 3 hours 9 minutes before

MNZ004-NDZ006>008-014>016-024-026-027-054-190415-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
1019 PM CDT WED JUL 18 2001

...THE TORNADO WATCH HAS BEEN ALLOWED TO EXPIRE...

AT 1010 PM CDT...THE MAIN THREAT FOR SEVERE WEATHER HAS SHIFTED
FURTHER SOUTH AND EAST OF THE REGION AS INCREASINGLY STABLE AIR
MOVED IN FROM THE NORTHWEST. THEREFORE THE TORNADO WATCH WAS ALLOWED
TO EXPIRE FOR TOWNER...CAVALIER...BENSON...RAMSEY... WALSH...
PEMBINA...NELSON...GRAND FORKS AND EDDY COUNTIES OF NORTHEAST NORTH
DAKOTA AND KITTSON COUNTY OF EXTREME NORTHWEST MINNESOTA AT 10 PM
CDT.

A SEVERE THUNDERSTORM WATCH CONTINUES FOR SOUTHEAST NORTH DAKOTA AND
MUCH OF NORTHWEST MINNESOTA UNTIL 3 AM CDT.

RJT

Local storm report, Jul 18, 10:39 PM CDT, 2 hours 49 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE EASTERN NORTH DAKOTA/GRAND FORKS 111 AM CDT
THU JUL 19 2001...RETRANSMISSION FOR SPC

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

1010 PM    3 W TABOR                 MN   1 INCH HAIL
07/18/01   POLK

1045 PM    8 S ARGYLE                MN   1 INCH HAIL
07/18/01   MARSHALL

1115 PM    6 NE EUCLID               MN   1 INCH HAIL
07/18/01   POLK

1204 AM    4 S EMERADO               ND   TORNADO
07/19/01   GRAND FORKS                    TORNADO TOUCHDOWN

1207 AM    5 S EMERADO               ND   TORNADO
07/19/01   GRAND FORKS                    TWO TORNADOES PARALLELING
                                          COUNTY ROAD 6

1214 AM    4 W GRAND FORKS           ND   TORNADO
07/19/01   GRAND FORKS                    TORNADO ON GROUND

1222 AM    3 SW GRAND FORKS          ND   TORNADO
07/19/01   GRAND FORKS                    TORNADO ON GROUND AT 8300
                                          BLOCK OF 32ND AVENUE

WWUS30 KFAR 190339
LSRFAR

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE EASTERN NORTH DAKOTA/GRAND FORKS
1039 PM CDT WED JUL 18 2001

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

0700 PM    5 S PEKIN                 ND   TORNADO
07/18/01   NELSON                         BARN DESTROYED, HOUSE
                                          DAMAGED BUT STILL
                                          STANDING, FARM EQUIPMENT
                                          DESTROYED AND POWER LINES
                                          DOWN

WWUS30 KFAR 190331
LSRFAR

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE EASTERN NORTH DAKOTA/GRAND FORKS
1030 PM CDT WED JUL 18 2001

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

0411 PM    4 E NECHE                 ND   2.5 INCH HAIL
07/18/01   PEMBINA

0418 PM    3 W PEMBINA               ND   1 INCH HAIL
07/18/01   PEMBINA                        HAIL COVERING GROUND

0435 PM    2 S PEMBINA               ND   .75 INCH HAIL
07/18/01   PEMBINA

0507 PM    4 NW LANCASTER            MN   1.75 INCH HAIL
07/18/01   KITTSON

0635 PM    10 S PEKIN                ND   TORNADO
07/18/01   GRIGGS

0655 PM    3 S PARK RIVER            ND   1.25 INCH HAIL
07/18/01   WALSH

0707 PM    4 NW LANCASTER            MN   WIND DAMAGE
07/18/01   KITTSON                        4 INCH DIAMETER BRANCHES
                                          DOWN, SHINGLES BLOWN OFF
                                          ROOF

0749 PM    6 SW CARIBOU              MN   .75 INCH HAIL
07/18/01   KITTSON

0805 PM    LUDE                      MN   FLOODING
07/18/01   LAKE OF THE WOODS              BASEMENTS FLOODED

0805 PM    LUDE                      MN   WIND DAMAGE
07/18/01   LAKE OF THE WOODS              TREES AND POWER LINES DOWN

0830 PM    5 SE PENCER               MN   1.5 INCH HAIL
07/18/01   ROSEAU

0830 PM    5 SE PENCER               MN   FLOODING
07/18/01   ROSEAU                         DITCHES FULL AND WATER
                                          RUNNING RAPIDLY OVER
                                          ROADWAY

WWUS30 KFAR 182337
LSRFAR

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE EASTERN NORTH DAKOTA/GRAND FORKS
637 PM CDT WED JUL 18 2001

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

0557 PM    7 S PEKIN                 ND   TORNADO
07/18/01   GRIGGS                         TORNADO ON GROUND WITH
                                          DEBRIS IN AIR

0604 PM    2 NW BINFORD              ND   TORNADO
07/18/01   GRIGGS                         TORNADO ON THE GROUND

0609 PM    9 NW BINFORD              ND   TORNADO
07/18/01   GRIGGS                         LARGE TORNADO ON GROUND

0625 PM    10 W ANETA                ND   TORNADO
07/18/01   NELSON                         100 YD WIDE TORNADO ON
                                          GROUND

WWUS30 KFAR 182019
LSRFAR

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE EASTERN NORTH DAKOTA/GRAND FORKS
317 PM CDT WED JUL 18 2001

...LATE REPORT...

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

0800 PM    WALCOTT                   ND   WIND DAMAGE
07/17/01   RICHLAND                       ROOF OF WALCOTT FIRE
                                          STATION BLOWN OFF.
                                          MANY TREES UPROOTED.

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 18, 7:04 PM CDT	Severe Thunderstorm Warning	FGF	Kittson	41 min
Jul 18, 7:08 PM CDT	Flash Flood Warning	FGF	Kittson	3 hr
Jul 18, 7:23 PM CDT	Severe Thunderstorm Warning	FGF	Lake of the Woods	52 min
Jul 18, 7:36 PM CDT	Tornado Warning	FGF	Lake of the Woods	39 min
Jul 18, 7:45 PM CDT	Severe Thunderstorm Warning	FGF	Kittson	45 min
Jul 18, 7:54 PM CDT	Severe Thunderstorm Warning	FGF	Roseau	66 min
Jul 18, 8:09 PM CDT	Flash Flood Warning	FGF	Lake of the Woods, Roseau	2 hr
Jul 18, 8:44 PM CDT	Tornado Warning	FGF	Marshall	46 min
Jul 18, 8:50 PM CDT	Severe Thunderstorm Warning	FGF	Beltrami, Lake of the Woods	55 min
Jul 18, 9:01 PM CDT	Severe Thunderstorm Warning	FGF	Roseau	29 min
Jul 18, 9:43 PM CDT	Severe Thunderstorm Warning	FGF	Lake of the Woods	47 min
Jul 18, 9:51 PM CDT	Severe Thunderstorm Warning	FGF	Polk	39 min
Jul 18, 10:00 PM CDT	Severe Thunderstorm Warning	FGF	Beltrami	45 min
Jul 18, 10:14 PM CDT	Flash Flood Warning	FGF	Lake of the Woods, Roseau	3 hr
Jul 18, 10:32 PM CDT	Severe Thunderstorm Warning	FGF	Polk	28 min
Jul 18, 10:37 PM CDT	Severe Thunderstorm Warning	FGF	Marshall	38 min
Jul 18, 11:04 PM CDT	Severe Thunderstorm Warning	FGF	Beltrami	41 min
Jul 18, 11:11 PM CDT	Severe Thunderstorm Warning	FGF	Pennington	49 min
Jul 18, 11:18 PM CDT	Tornado Warning	FGF	Pennington, Red Lake	27 min
Jul 18, 11:42 PM CDT	Tornado Warning	FGF	Red Lake	33 min
Jul 19, 12:14 AM CDT	Tornado Warning	FGF	Polk	31 min
Jul 19, 12:27 AM CDT	Flash Flood Warning	FGF	Marshall, Polk	2 hr
Jul 19, 12:54 AM CDT	Severe Thunderstorm Warning	FGF	Norman	66 min
Jul 19, 1:09 AM CDT	Severe Thunderstorm Warning	FGF	Polk	66 min
Jul 19, 1:59 AM CDT	Severe Thunderstorm Warning	FGF	Marshall	46 min
Jul 19, 2:05 AM CDT	Severe Thunderstorm Warning	FGF	Mahnomen, Norman	40 min
Jul 19, 2:15 AM CDT	Severe Thunderstorm Warning	FGF	Clay	30 min
Jul 19, 2:28 AM CDT	Severe Thunderstorm Warning	FGF	Becker	47 min
Jul 19, 2:52 AM CDT	Severe Thunderstorm Warning	FGF	Beltrami, Clearwater, Hubbard	38 min
Jul 19, 3:12 AM CDT	Severe Thunderstorm Warning	FGF	Becker	63 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 2001 Every severe thunderstorm warning in 2001

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.