Alert archive / North Dakota / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 171, NWS Grand Forks, ND
NWS Grand Forks, ND issued this severe thunderstorm warning at Aug 3, 1997, 10:32 PM CDT for Richland County, North Dakota. It was in force for 43 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
- Aug 3, 1997, 10:32 PM CDT (03:32 UTC)
- Expired
- Aug 3, 1997, 11:15 PM CDT
- In force
- 43 min
- Issued by
- NWS Grand Forks, ND
- Area
- Whole counties
County Richland County, ND
The radar
The Fargo/Grand Forks radar (KMVX), 143 km from the middle of the area, began a volume at 03:36 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 3, 11:05 PM CDT | Hail 0.75 | Mooreton, ND |
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, 3.5 hours before the alert went out and 189 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
- 1314 J/kg
- Mixed-layer CIN
- -35 J/kg
- Mixed-layer LCL
- 1787 m above ground
- 0-6 km bulk shear
- 46 kt
- 0-1 km storm-relative helicity
- 65 m²/s²
- 0-3 km storm-relative helicity
- 138 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 3.1
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KFAR 040333 RRA SVRFAR NDC077-040415- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 1032 PM CDT SUN AUG 3 1997 THE NATIONAL WEATHER SERVICE IN EASTERN ND/GRAND FORKS HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1115 PM CDT FOR PEOPLE IN THE FOLLOWING LOCATION... IN SOUTHEAST NORTH DAKOTA ...EASTERN RICHLAND COUNTY AT 1029 PM...RADAR INDICATED A SEVERE THUNDERSTORM 10 MILES EAST OF KINDRED OR 20 MILES SOUTHWEST OF FARGO. THIS STORM WAS MOVING SOUTHEAST AT 35 MPH AND WILL EFFECT THE TOWNS OF CHRISTINE AND AMBERCROMBIE. REMEMBER SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES WITH LITTLE OR NO ADVAzNCE WARNING. GSF
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 3, 8:54 PM CDT, 1 hour 38 minutes earlier.
Area forecast discussion, Aug 3, 8:54 PM CDT, 1 hour 38 minutes before
FORECAST DISCUSSION FOR EASTERN NORTH DAKOTA AND NORTHWEST MINNESOTA NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 853 PM CDT SUN AUG 3 1997 KMVX 88D CONTINUES TO INDICATE -TSRA IN WEST CENTRAL MN AND THESE SHOULD DIMINISH WITH LOSS OF DAYTIME HEATING. ADAP SSW STREAMLINES SHOWS WEAK SFC TROF FROM LAKE OF THE WOODS COUNTY IN MN INTO SE ND. IN ADDITION...WV IMAGERY AND 21Z RUC INDICATED WEAK S/W EMBEDDED IN NW FLOW SET OFF EARLIER CONVECTION. EXP ECT A QUIET NIGHT AS SFC HIGH PRESSURE BUILDS IN FROM THE WEST. WITH LOW LEVEL DRYING...DO NOT EXPECT FOG FORMATION. WILL UPDATE ZONES TO CLEAN UP WORDING. GSF
In the hours before
Local storm report, Aug 3, 9:35 PM CDT, 57 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
935 PM CDT SUN AUG 3 1997
TIME(CDT) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0453 PM 3S GULLY MN 0.75 INCH HAIL
08/03/97 POLK
0515 PM PINE LAKE MN 1.00 INCH HAIL
08/03/97 CLEARWATER TREE DAMAGE
0556 PM GRAND FORKS AIRPORT ND 1.00 INCH HAIL
08/03/97 GRAND FORKS
0600 PM 5N ROCKLAKE ND 1.00 INCH HAIL
08/03/97 TOWNER
0630 PM 8NW CLIMAX MN 0.75 INCH HAIL
08/03/97 POLK
0630 PM 8E REYNOLDS ND 0.75 INCH HAIL
08/03/97 GRAND FORKS
0700 PM 12N PARK RAPIDS MN 0.75 INCH HAIL
08/03/97 HUBBARDLocal storm report, Aug 3, 9:36 PM CDT, 56 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
935 PM CDT SUN AUG 3 1997
TIME(CDT) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0453 PM 3S GULLY MN 0.75 INCH HAIL
08/03/97 POLK
0515 PM PINE LAKE MN 1.00 INCH HAIL
08/03/97 CLEARWATER TREE DAMAGE
0556 PM GRAND FORKS AIRPORT ND 1.00 INCH HAIL
08/03/97 GRAND FORKS
0600 PM 5N ROCKLAKE ND 1.00 INCH HAIL
08/03/97 TOWNER
0630 PM 8NW CLIMAX MN 0.75 INCH HAIL
08/03/97 POLK
0630 PM 8E REYNOLDS ND 0.75 INCH HAIL
08/03/97 GRAND FORKS
0700 PM 12N PARK RAPIDS MN 0.75 INCH HAIL
08/03/97 HUBBARDThe office that day
Everything else NWS Grand Forks, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 3, 11:17 PM CDT | Severe Thunderstorm Warning | FGF | Richland | 28 min |
Nearby
Severe Thunderstorm Warnings in North Dakota, 1997Every severe thunderstorm warning in 1997
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.