Alert archive / North Dakota / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 317, NWS Grand Forks, ND

August 14, 2001Barnes County, Griggs County, North Dakota

NWS Grand Forks, ND issued this severe thunderstorm warning at Aug 14, 2001, 11:21 PM CDT for Barnes County, Griggs County, North Dakota. It was in force for 39 min. 2 reports 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
Aug 14, 2001, 11:21 PM CDT (04:21 UTC)
Expired
Aug 15, 2001, 12:00 AM CDT
In force
39 min
Issued by
NWS Grand Forks, ND
Area
Whole counties; the outline is the Mesonet’s reconstruction

Counties Barnes County, ND, Griggs County, ND

The radar

The Fargo/Grand Forks radar (KMVX), 89 km from the middle of the area, began a volume at 04:22 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
Aug 14, 11:45 PM CDTThunderstorm WindHannaford, NDBranches were blown down.
Aug 15, 12:00 AM CDTThunderstorm WindRogers, NDTrees 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

Bismarck Municip, ND (KBIS), launched 00:00Z, 4.4 hours before the alert went out and 181 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, Bismarck Municip, ND at 00:00Z on 2001-08-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2390 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Bismarck Municip, ND at 00:00Z on 2001-08-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 35 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
2390 J/kg
Mixed-layer CIN
-19 J/kg
Mixed-layer LCL
1983 m above ground
0-6 km bulk shear
27 kt
0-1 km storm-relative helicity
35 m²/s²
0-3 km storm-relative helicity
3 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.1

Open this sounding in Storm Lab

The text

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

767 
WUUS53 KFGF 150421
SVRFAR
NDC003-039-150500-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE EASTERN ND-GRAND FORKS
1121 PM CDT TUE AUG 14 2001

THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...

  BARNES COUNTY IN SOUTHEAST NORTH DAKOTA AND GRIGGS COUNTY IN       
  SOUTHEAST NORTH DAKOTA.   INCLUDING THE CITY OF VALLEY CITY...

* UNTIL MIDNIGHT CDT.

* AT 1116 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THE
  LEADING EDGE OF SEVERE THUNDERSTORMS ALONG A LINE EXTENDING FROM 37
  MILES NORTHWEST OF VALLEY CITY TO 28 MILES NORTHWEST OF VALLEY
  CITY...MOVEMENT WAS TO THE EAST AT 25 MPH.

* SEVERE THUNDERSTORMS WILL BE NEAR...

  URBANA AT 1125 PM...
  ECKELSON AT 1135 PM...
  LEAL AT 1140 PM AND
  SANBORN AT 1145 PM.

EXPECT WIND GUSTS TO 70 MPH WITH THIS STORM.

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

LAT...LON 4736 9870 4686 9860 4692 9793 4742 9802


$$
08
DJK

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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 Aug 14, 8:30 PM CDT, 2 hours 51 minutes earlier.

Area forecast discussion, Aug 14, 8:30 PM CDT, 2 hours 51 minutes before
FORECAST DISCUSSION FOR EASTERN NORTH DAKOTA AND NORTHWEST MINNESOTA
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
830 PM CDT TUE AUG 14 2001

...CONVECTION RE-DEVELOPING INVOF SFC FRONT IN NORTHEAST ND...

THUNDERSTORMS ARE DEVELOPING NEAR DVL NEAR SFC FRONT AND MAXIMIZED
SFC MOISTURE FLUX CONVERGENCE. FRONT WILL SAG SOUTH OVERNIGHT...WITH
DECENT UPPER LEVEL SUPPORT AHEAD OF SHORTWAVE. WILL MENTION
SCATTERED THUNDER IN ALL ZONES OVERNIGHT...AND KEEP FFA GOING IN
EASTERN FA.

.FGF...FLASH FLOOD WATCH OVERNIGHT FOR NORTHWEST MINNESOTA...FOR
AREAS ALONG AND NORTH OF A FOSSTON TO BEMIDJI LINE.

KELLENBENZ

In the hours before

Local storm report, Aug 14, 6:40 PM CDT, 4 hours 41 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE EASTERN NORTH DAKOTA/GRAND FORKS
640 PM CDT TUE AUG 14 2001

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

0325 PM    LANGDON                   ND   WIND DAMAGE
08/14/01   CAVALIER                       LARGE BRANCHES DOWN

0435 PM    4 NE STEPHEN              MN   .88 INCH HAIL
08/14/01   MARSHALL

0445 PM    GRAFTON                   ND   WIND DAMAGE
08/14/01   WALSH                          TREES DOWN

0449 PM    3 N DRAYTON               ND   WIND DAMAGE
08/14/01   PEMBINA                        TREES DOWN

0505 PM    STEPHEN                   MN   WIND DAMAGE
08/14/01   MARSHALL                       TREE DOWN

0510 PM    3 E KARLSTAD              MN   .88 INCH HAIL
08/14/01   KITTSON

0535 PM    3 NE RADIUM               MN   60 MPH TSTM GUST
08/14/01   MARSHALL

0548 PM    20 NW THIEF RIVER FALLS   MN   .75 INCH HAIL
08/14/01   PENNINGTON

0609 PM    CROOKSTON                 MN   .75 INCH HAIL
08/14/01   POLK

0613 PM    2 W CROOKSTON             MN   1.75 INCH HAIL
08/14/01   POLK

0620 PM    HUOT                      MN   1.75 INCH HAIL
08/14/01   RED LAKE

NNNN
Special weather statement, Aug 14, 7:08 PM CDT, 4 hours 13 minutes before
MNZ004-007-NDZ006>008-014>016-024-026>030-054-150110-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
708 PM CDT TUE AUG 14 2001

...SEVERE THUNDERSTORM WATCH NUMBER 671 HAS BEEN CANCELLED FOR
NORTHEAST NORTH DAKOTA AND EXTREME NORTHWEST MINNESOTA...

THE SEVERE THUNDERSTORM WATCH THAT WAS IN EFFECT FOR NORTHEAST
NORTH DAKOTA AND EXTREME NORTHWEST MINNESOTA HAS BEEN CANCELLED. THE
THREAT OF SEVERE WEATHER HAS MOVED TO THE EAST...SO THE WATCH HAS
BEEN CANCELLED.

DJK
Local storm report, Aug 14, 10:20 PM CDT, 1 hour 1 minute before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE EASTERN NORTH DAKOTA/GRAND FORKS
1020 PM CDT TUE AUG 14 2001

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

0500 PM    10 NE GRAFTON             ND   WIND DAMAGE
08/14/01   WALSH                          TREES DOWN

0504 PM    3 W KENNEDY               MN   WIND DAMAGE
08/14/01   KITTSON                        POWER POLES DOWN

0635 PM    5 W HAROLD                MN   .75 INCH HAIL
08/14/01   POLK                           WINDS ALSO KNOCKED DOWN
                                          LARGE BRANCHES

0650 PM    4 N SUTTON                ND   .75 INCH HAIL
08/14/01   GRIGGS

0845 PM    4 SE OBERON               ND   1.75 INCH HAIL
08/14/01   BENSON

0855 PM    3 E SHEYENNE              ND   1.75 INCH HAIL
08/14/01   EDDY

0900 PM    6 SE SHEYENNE             ND   1.75 INCH HAIL
08/14/01   EDDY

0920 PM    5 W NEW ROCKFORD          ND   .75 INCH HAIL
08/14/01   EDDY

0929 PM    3 SE NEW ROCKFORD         ND   TORNADO
08/14/01   EDDY

0936 PM    11 E NEW ROCKFORD         ND   1 INCH HAIL
08/14/01   EDDY

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The office that day

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

IssuedProductOfficeCountiesLasted
Aug 14, 8:43 PM CDTSevere Thunderstorm WarningFGFBenson47 min
Aug 14, 8:51 PM CDTSevere Thunderstorm WarningFGFEddy39 min
Aug 14, 9:06 PM CDTTornado WarningFGFEddy24 min
Aug 14, 9:12 PM CDTSevere Thunderstorm WarningFGFNelson48 min
Aug 14, 9:28 PM CDTSevere Thunderstorm WarningFGFEddy47 min
Aug 14, 9:28 PM CDTTornado WarningFGFEddy47 min
Aug 14, 9:35 PM CDTFlash Flood WarningFGFEddy6 hr
Aug 14, 9:57 PM CDTSevere Thunderstorm WarningFGFGriggs, Nelson48 min
Aug 14, 10:22 PM CDTSevere Thunderstorm WarningFGFGrand Forks38 min
Aug 14, 11:03 PM CDTSevere Thunderstorm WarningFGFGrand Forks42 min
Aug 14, 11:17 PM CDTFlash Flood WarningFGFGrand Forks6 hr

Nearby

Severe Thunderstorm Warnings in North Dakota, 2001Every 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.