Alert archive / North Dakota / Special Weather Statements in 2020
Special Weather Statement, NWS Bismarck, ND
NWS Bismarck, ND issued this special weather statement at Aug 4, 2020, 7:21 PM CDT for McHenry County, North Dakota. It was in force for 39 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Aug 4, 2020, 7:21 PM CDT (00:21 UTC)
- Expired
- Aug 4, 2020, 8:00 PM CDT
- In force
- 39 min
- Issued by
- NWS Bismarck, ND
County McHenry County, ND
The radar
The Minot AFB radar (KMBX), 26 km from the middle of the area, began a volume at 00:25 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.
The nearest sounding before it
Bismarck Municip, ND (KBIS), launched 00:00Z, 0.4 hours before the alert went out and 164 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
- 80 J/kg
- Mixed-layer CIN
- -82 J/kg
- Mixed-layer LCL
- 1503 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- 0 m²/s²
- 0-3 km storm-relative helicity
- 84 m²/s²
- Significant tornado parameter
- -0.0
- Supercell composite
- -0.1
The text
As transmitted.
439 WWUS83 KBIS 050021 SPSBIS Special Weather Statement National Weather Service Bismarck ND 721 PM CDT Tue Aug 4 2020 NDZ011-012-050100- McHenry ND-Ward ND- 721 PM CDT Tue Aug 4 2020 ...SIGNIFICANT WEATHER ADVISORY FOR EAST CENTRAL WARD AND WEST CENTRAL MCHENRY COUNTIES UNTIL 800 PM CDT... At 720 PM CDT, a strong thunderstorm was located near Surrey, or 5 miles east of Minot, moving east at 10 mph. Penny size hail will be possible with this storm. Locations impacted include... Surrey, Granville, Norwich, Logan and Simcoe. If you are in the path of this storm, seek shelter indoors. LAT...LON 4814 10128 4832 10128 4841 10084 4809 10082 TIME...MOT...LOC 0020Z 270DEG 9KT 4824 10117 $$ CJS
The office that day
Everything else NWS Bismarck, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 4, 7:39 PM CDT | Tornado Warning | BIS | Mountrail, Williams | 36 min |
| Aug 4, 7:44 PM CDT | Special Weather Statement | BIS | McLean | 31 min |
| Aug 4, 8:02 PM CDT | Special Weather Statement | BIS | Dunn | 28 min |
| Aug 4, 8:23 PM CDT | Special Weather Statement | BIS | Mountrail | 37 min |
| Aug 4, 8:38 PM CDT | Special Weather Statement | BIS | McHenry | 37 min |
| Aug 4, 8:53 PM CDT | Special Weather Statement | BIS | Dunn | 37 min |
| Aug 4, 9:06 PM CDT | Special Weather Statement | BIS | McLean | 24 min |
| Aug 4, 9:11 PM CDT | Special Weather Statement | BIS | McHenry | 34 min |
| Aug 4, 9:30 PM CDT | Special Weather Statement | BIS | Oliver | 45 min |
| Aug 4, 9:51 PM CDT | Special Weather Statement | BIS | Sheridan | 24 min |
| Aug 4, 10:22 PM CDT | Special Weather Statement | BIS | Sheridan | 23 min |
| Aug 4, 11:27 PM CDT | Special Weather Statement | BIS | Sheridan | 48 min |
| Aug 5, 12:10 AM CDT | Special Weather Statement | BIS | Sheridan | 35 min |
| Aug 5, 12:49 AM CDT | Special Weather Statement | BIS | Sheridan | 26 min |
Nearby
Special Weather Statements in North Dakota, 2020Every special weather statement in 2020
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.