Alert archive / North Dakota / Special Weather Statements in 2017
Special Weather Statement, NWS Grand Forks, ND
NWS Grand Forks, ND issued this special weather statement at Aug 9, 2017, 5:21 PM CDT for Sargent County, North Dakota. It was in force for 54 min. 1 report came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Aug 9, 2017, 5:21 PM CDT (22:21 UTC)
- Expired
- Aug 9, 2017, 6:15 PM CDT
- In force
- 54 min
- Issued by
- NWS Grand Forks, ND
County Sargent County, ND
The radar
The Aberdeen radar (KABR), 113 km from the middle of the area, began a volume at 22:24 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 9, 5:45 PM CDT | HAIL 0.5 | Gwinner, ND | PEA TO SMALL MARBLE SIZED HAIL FELL OVER A COUPLE MINUTE PERIOD. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Aberdeen, SD (KABR), launched 12:00Z, 10.4 hours before the alert went out and 167 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
- 352 J/kg
- Mixed-layer CIN
- -92 J/kg
- Mixed-layer LCL
- 856 m above ground
- 0-6 km bulk shear
- 30 kt
- 0-1 km storm-relative helicity
- 62 m²/s²
- 0-3 km storm-relative helicity
- 74 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.4
The text
As transmitted.
116
WWUS83 KFGF 092221
SPSFGF
Special Weather Statement
National Weather Service Eastern ND/Grand Forks ND
521 PM CDT WED AUG 9 2017
NDZ049-052-092315-
Sargent ND-Ransom ND-
521 PM CDT WED AUG 9 2017
...SIGNIFICANT WEATHER ADVISORY FOR SOUTHERN RANSOM AND NORTHERN
SARGENT COUNTIES UNTIL 615 PM CDT...
At 520 PM CDT, Doppler radar was tracking a strong thunderstorm near
Elliott, or 36 miles north of Britton, moving east at 20 mph.
Dime size hail and winds in excess of 40 mph will be possible with
this storm.
Locations impacted include...
Gwinner, Milnor, De Lamere, McLeod, Stirum, Hamlin and Elliott.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
office in Grand Forks.
&&
LAT...LON 4622 9790 4640 9789 4641 9728 4628 9728
4628 9727 4612 9726
TIME...MOT...LOC 2220Z 269DEG 20KT 4632 9779
$$
LeeThe office that day
Everything else NWS Grand Forks, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 9, 12:27 PM CDT | Special Weather Statement | FGF | Lake of the Woods | 63 min |
| Aug 9, 5:24 PM CDT | Special Weather Statement | FGF | Clay | 66 min |
| Aug 9, 6:51 PM CDT | Special Weather Statement | FGF | Grant | 54 min |
| Aug 9, 2:30 PM CDT | Special Weather Statement | FGF | Griggs, Steele | 60 min |
| Aug 9, 2:43 PM CDT | Severe Thunderstorm Warning | FGF | Barnes | 62 min |
| Aug 9, 3:37 PM CDT | Special Weather Statement | FGF | Barnes, Cass | 38 min |
| Aug 9, 4:19 PM CDT | Special Weather Statement | FGF | Cass | 41 min |
| Aug 9, 4:29 PM CDT | Severe Thunderstorm Warning | FGF | Barnes, Cass, Ransom, Richland | 31 min |
| Aug 9, 4:56 PM CDT | Severe Thunderstorm Warning | FGF | Cass, Ransom, Richland | 49 min |
| Aug 9, 5:44 PM CDT | Special Weather Statement | FGF | Richland | 61 min |
Nearby
Special Weather Statements in North Dakota, 2017Every special weather statement in 2017
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.