Alert archive / North Dakota / Severe Thunderstorm Warnings in 2001
Severe Thunderstorm Warning 316, NWS Grand Forks, ND
NWS Grand Forks, ND issued this severe thunderstorm warning at Aug 14, 2001, 11:03 PM CDT for Grand Forks County, North Dakota; Polk County, Minnesota. It was in force for 42 min. 3 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, 11:03 PM CDT (04:03 UTC)
- Expired
- Aug 14, 2001, 11:45 PM CDT
- In force
- 42 min
- Issued by
- NWS Grand Forks, ND
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
Counties Polk County, MN, Grand Forks County, ND
The radar
The Fargo/Grand Forks radar (KMVX), 54 km from the middle of the area, began a volume at 04:06 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 |
|---|---|---|---|
| Aug 14, 11:04 PM CDT | Hail 0.88 | Grand Forks, ND | Hail was reported at the NWS office. |
| Aug 14, 11:09 PM CDT | Hail 1.75 | Grand Forks, ND | |
| Aug 14, 11:11 PM CDT | Hail 1 | East Grand Forks, 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 00:00Z, 4.1 hours before the alert went out and 276 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.
- Mixed-layer CAPE
- 1193 J/kg
- Mixed-layer CIN
- -23 J/kg
- Mixed-layer LCL
- 1487 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 42 m²/s²
- 0-3 km storm-relative helicity
- 87 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 2.4
The text
As transmitted, in the capitals the NWS used until 2016.
610 WUUS53 KFGF 150403 SVRFAR MNC119-NDC035-150445- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE EASTERN ND-GRAND FORKS 1103 PM CDT TUE AUG 14 2001 THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... EAST CENTRAL GRAND FORKS COUNTY IN NORTHEAST NORTH DAKOTA AND WEST CENTRAL POLK COUNTY IN NORTHWEST MINNESOTA. INCLUDING THE CITY OF GRAND FORKS... * UNTIL 1145 PM CDT. * AT 1056 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM OVER GRAND FORKS...MOVEMENT WAS TO THE EAST AT 25 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... GRAND FORKS AND EAST GRAND FORKS AT 1105 PM... MALLORY AT 1115 PM... DAVIDSON AT 1120 PM AND KEY WEST AT 1125 PM. REMEMBER SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING. LAT...LON 4804 9710 4787 9720 4765 9651 4801 9658 $$ 08 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 Aug 14, 8:30 PM CDT, 2 hours 33 minutes earlier.
Area forecast discussion, Aug 14, 8:30 PM CDT, 2 hours 33 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
Special weather statement, Aug 14, 5:03 PM CDT, 6 hours before
MNZ001-NDZ027-150005- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 503 PM CDT TUE AUG 14 2001 ...STRONG WINDS TO AFFECT GRAND FORKS AND POLK COUNTIES THIS EVENING... A LINE OF THUNDERSTORMS WILL MOVE INTO GRAND FORKS BY 530 PM...THEN INTO POLK COUNTY THEREAFTER. WIND GUSTS UP TO 45 MPH ARE POSSIBLE IN GRAND FORKS AND SURROUNDING COMMUNITIES. EVEN THOUGH THESE WINDS ARE NOT STRONG ENOUGH TO PROMPT A SEVERE THUNDERSTORM WARNING AT THIS TIME...THE WINDS MAY AFFECT ALREADY DAMAGED TREES IN THE REGION. IN ADDITION...ANY BRANCHES OR LIMBS ON THE GROUND MAY ALSO BLOW AROUND. A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL 9 PM CDT FOR THE AREA...AND A FLASH FLOOD WATCH IS IN EFFECT TONIGHT. SO LISTEN FOR LATER STATEMENTS AND POSSIBLE WARNINGS THROUGH THE OVERNIGHT. DJK
Local storm report, Aug 14, 6:40 PM CDT, 4 hours 23 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
NNNNSpecial weather statement, Aug 14, 7:08 PM CDT, 3 hours 55 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, 43 minutes 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
NNNNThe office that day
Everything else NWS Grand Forks, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 14, 8:43 PM CDT | Severe Thunderstorm Warning | FGF | Benson | 47 min |
| Aug 14, 8:51 PM CDT | Severe Thunderstorm Warning | FGF | Eddy | 39 min |
| Aug 14, 9:06 PM CDT | Tornado Warning | FGF | Eddy | 24 min |
| Aug 14, 9:12 PM CDT | Severe Thunderstorm Warning | FGF | Nelson | 48 min |
| Aug 14, 9:28 PM CDT | Severe Thunderstorm Warning | FGF | Eddy | 47 min |
| Aug 14, 9:28 PM CDT | Tornado Warning | FGF | Eddy | 47 min |
| Aug 14, 9:35 PM CDT | Flash Flood Warning | FGF | Eddy | 6 hr |
| Aug 14, 9:57 PM CDT | Severe Thunderstorm Warning | FGF | Griggs, Nelson | 48 min |
| Aug 14, 10:22 PM CDT | Severe Thunderstorm Warning | FGF | Grand Forks | 38 min |
| Aug 14, 11:17 PM CDT | Flash Flood Warning | FGF | Grand Forks | 6 hr |
| Aug 14, 11:21 PM CDT | Severe Thunderstorm Warning | FGF | Barnes, Griggs | 39 min |
| Aug 14, 7:16 PM CDT | Severe Thunderstorm Warning | FGF | Beltrami | 29 min |
| Aug 14, 11:48 PM CDT | Severe Thunderstorm Warning | FGF | Pennington, Polk, Red Lake | 57 min |
Nearby
Severe Thunderstorm Warnings in North Dakota, 2001Severe Thunderstorm Warnings in Minnesota, 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.