Alert archive / North Dakota / Severe Thunderstorm Warnings in 2019
Severe Thunderstorm Warning 240, NWS Bismarck, ND
NWS Bismarck, ND issued this severe thunderstorm warning at Sep 20, 2019, 6:33 PM CDT for Morton County, Sioux County, North Dakota. It was in force for 42 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Sep 20, 2019, 6:33 PM CDT (23:33 UTC)
- Expired
- Sep 20, 2019, 7:15 PM CDT
- In force
- 42 min
- Issued by
- NWS Bismarck, ND
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Morton County, ND, Sioux County, ND
The radar
The Bismarck radar (KBIS), 50 km from the middle of the area, began a volume at 23:36 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.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Sep 20, 1:50 PM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
The nearest sounding before it
Bismarck Municip, ND (KBIS), launched 12:00Z, 11.6 hours before the alert went out and 53 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
- 1602 J/kg
- Mixed-layer CIN
- -322 J/kg
- Mixed-layer LCL
- 1356 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- 186 m²/s²
- 0-3 km storm-relative helicity
- 128 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 Bismarck, ND wrote its last area forecast discussion before this severe thunderstorm warning went out at Sep 20, 5:47 PM CDT, 46 minutes earlier.
Area forecast discussion, Sep 20, 5:47 PM CDT, 46 minutes before
Area Forecast Discussion National Weather Service Bismarck ND 547 PM CDT Fri Sep 20 2019 .UPDATE... Issued at 547 PM CDT Fri Sep 20 2019 Cold front located from just west of Minot south to Glen Ullin. Severe discrete storms continue merge together into a cluster along and ahead of the front. No change to the current forecast or the ongoing severe thunderstorm watch which continues until 10 PM CDT for most of central ND. More thunderstorms will move from South Dakota north this evening through tonight. These storms will be more attached with the upper level low and stronger forced ascent that is progged to approach later tonight through Saturday. UPDATE Issued at 419 PM CDT Fri Sep 20 2019 Quick update for thunderstorms forming in south central North Dakota. && .SHORT TERM...(This evening through Saturday) Issued at 203 PM CDT Fri Sep 20 2019 Severe thunderstorm watch 654 has been issued for central North Dakota this afternoon and evening. Organized line of thunderstorms has formed along the cold front similar to CAM model forecast. The HREF ensemble depicts some short to medium length supercells tracking northeast along the front and nothing has changed to the anticipated scenario and storm mode, with a linear MCS expected to form and track across central into eastern North Dakota through this evening. A secondary thrust of severe weather may be possible across southwest and south central North Dakota late this evening and overnight as the CAM models now suggest. Saturday will see widespread showers and and scattered thunderstorms as the main upper low tracks into the region. In addition to the severe weather, heavy rains will be a concern, although current indications are the rainfall will not completely overlap the september rains from last 2 weeks. .LONG TERM...(Saturday night through Friday) Issued at 203 PM CDT Fri Sep 20 2019 After this rain event, mainly dry weather is forecast through Tuesday, with scattered showers Wednesday through Friday. Much cooler weather Wednesday through Friday. && .AVIATION...(For the 00Z TAFS through 00Z Saturday evening) Issued at 547 PM CDT Fri Sep 20 2019 Showers and scattered thunderstorms, some severe with large hail and damaging winds continue to be a threat for KMOT/KBIS and KJMS through 07z Saturday. Although scattered showers and thunderstorms will slide into KDIK and KISN mainly after 06z, the severity will be limited. MVFR to IFR cigs can be expected this taf period with the precipitation. && .BIS WATCHES/WARNINGS/ADVISORIES... NONE. && UPDATE...KS SHORT TERM...WAA LONG TERM...WAA AVIATION...KS
Hazardous weather outlook, Sep 20, 2:37 PM CDT, 3 hours 56 minutes before
Hazardous Weather Outlook National Weather Service Bismarck ND 237 PM CDT Fri Sep 20 2019 NDZ003>005-011>013-019>023-025-034>037-042-045>047-050-211945- Renville-Bottineau-Rolette-Ward-McHenry-Pierce-Mercer-Oliver- McLean-Sheridan-Wells-Foster-Morton-Burleigh-Kidder-Stutsman- Grant-Sioux-Emmons-Logan-McIntosh- 237 PM CDT Fri Sep 20 2019 /137 PM MDT Fri Sep 20 2019/ This Hazardous Weather Outlook is for portions of north central North Dakota, south central North Dakota, and southeast North Dakota. .DAY ONE...This Afternoon and Tonight Thunderstorms this afternoon and this evening. Some storms will be severe with large hail to the size of golf balls and damaging winds to 60 mph the main threats. An isolated tornado threat is also possible late this afternoon and evening. Additionally, heavy rainfall today and tonight may lead to localized flooding. .DAYS TWO THROUGH SEVEN...Saturday through Thursday There is a chance of thunderstorms Saturday morning through Saturday evening. Additional heavy rainfall may lead to localized flooding. .SPOTTER INFORMATION STATEMENT... Spotter activation may be needed. NDZ001-002-009-010-017-018-031>033-040-041-043-044-048-051-211945- Divide-Burke-Williams-Mountrail-McKenzie-Dunn-Golden Valley- Billings-Stark-Slope-Hettinger-Bowman-Adams-La Moure-Dickey- 237 PM CDT Fri Sep 20 2019 /137 PM MDT Fri Sep 20 2019/ This Hazardous Weather Outlook is for portions of northwest North Dakota, southeast North Dakota, and southwest North Dakota. .DAY ONE...This Afternoon and Tonight Thunderstorms are likely this afternoon west and tonight west and central. Some storms may be strong to severe, with large hail to the size of quarters and damaging winds to 60 mph the main threats. An isolated tornado threat is also possible late this afternoon and evening. Additionally, heavy rainfall today and tonight may lead to localized flooding. .DAYS TWO THROUGH SEVEN...Saturday through Thursday There is a chance of thunderstorms Saturday morning through Saturday evening. Additional heavy rainfall may lead to localized flooding. .SPOTTER INFORMATION STATEMENT... Spotter activation may be needed.
In the hours before
Local storm report, Sep 20, 4:58 PM CDT, 1 hour 35 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BISMARCK ND
458 PM CDT FRI SEP 20 2019
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0135 PM HAIL 5 NE MAXBASS 48.78N 101.07W
09/20/2019 E1.00 INCH BOTTINEAU ND PUBLIC
NO DAMAGE REPORTED.
&&
KSLocal storm report, Sep 20, 5:23 PM CDT, 1 hour 10 minutes before
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</html>Local storm report, Sep 20, 6:13 PM CDT, 20 minutes before
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</html>The office that day
Everything else NWS Bismarck, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 19, 11:06 PM CDT | Special Weather Statement | BIS | Divide | 24 min |
| Sep 19, 11:27 PM CDT | Special Weather Statement | BIS | Divide | 33 min |
| Sep 20, 12:12 AM CDT | Special Weather Statement | BIS | Divide | 33 min |
| Sep 20, 12:26 AM CDT | Severe Thunderstorm Warning | BIS | Divide | 40 min |
| Sep 20, 11:10 AM CDT | Special Weather Statement | BIS | Mountrail | 20 min |
| Sep 20, 11:26 AM CDT | Severe Thunderstorm Warning | BIS | McKenzie, Mountrail | 64 min |
| Sep 20, 12:18 PM CDT | Severe Thunderstorm Warning | BIS | Mountrail, Ward | 43 min |
| Sep 20, 12:52 PM CDT | Severe Thunderstorm Warning | BIS | Bottineau, Renville | 38 min |
| Sep 20, 1:23 PM CDT | Severe Thunderstorm Warning | BIS | Bottineau | 43 min |
| Sep 20, 1:25 PM CDT | Special Weather Statement | BIS | Mercer | 20 min |
| Sep 20, 1:58 PM CDT | Severe Thunderstorm Warning | BIS | McLean, Ward | 62 min |
| Sep 20, 2:47 PM CDT | Severe Thunderstorm Warning | BIS | Bottineau, McHenry, Renville, Ward | 43 min |
| Sep 20, 3:23 PM CDT | Severe Thunderstorm Warning | BIS | Grant, Morton, Sioux | 67 min |
| Sep 20, 3:27 PM CDT | Severe Thunderstorm Warning | BIS | Bottineau | 63 min |
| Sep 20, 4:24 PM CDT | Severe Thunderstorm Warning | BIS | Burleigh | 66 min |
| Sep 20, 4:35 PM CDT | Severe Thunderstorm Warning | BIS | Emmons | 55 min |
| Sep 20, 4:45 PM CDT | Severe Thunderstorm Warning | BIS | Burleigh, Emmons, Morton, Sioux | 47 min |
| Sep 20, 5:07 PM CDT | Severe Thunderstorm Warning | BIS | Sheridan | 52 min |
| Sep 20, 6:01 PM CDT | Special Weather Statement | BIS | Kidder, Wells | 29 min |
| Sep 20, 6:10 PM CDT | Areal Flood Advisory | BIS | Burleigh, Kidder, Sheridan, Wells | 3 hr |
Nearby
Severe Thunderstorm Warnings in North Dakota, 2019Every severe thunderstorm warning in 2019
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.