Alert archive / North Dakota / Flash Flood Watches in 2018

Flash Flood Watch 1, NWS Bismarck, ND

June 28, 201816 counties in North Dakota

NWS Bismarck, ND issued this flash flood watch at Jun 28, 2018, 1:01 PM MDT for 16 counties in North Dakota. It took effect at Jun 28, 2018, 6:00 PM MDT. It was in force for 9 hr.

The area

The counties it named.

The facts

Issued: Jun 28, 2018, 1:01 PM MDT (19:01 UTC)
In effect from: Jun 28, 2018, 6:00 PM MDT
Expired: Jun 29, 2018, 2:41 AM MDT
In force: 9 hr
Issued by: NWS Bismarck, ND
Flood severity: None

Counties Billings County, ND, Bottineau County, ND, Burke County, ND, Divide County, ND, Dunn County, ND, Golden Valley County, ND, McHenry County, ND, McKenzie County, ND, Mercer County, ND, Mountrail County, ND, Pierce County, ND, Renville County, ND, Rolette County, ND, Sheridan County, ND, Wells County, ND, Williams County, ND

The radar

The Minot AFB radar (KMBX), 85 km from the middle of the area, began a volume at 19:02 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 12:00Z, 7.0 hours before the alert went out and 165 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 1855 J/kg
Mixed-layer CIN: -101 J/kg
Mixed-layer LCL: 945 m above ground
0-6 km bulk shear: 52 kt
0-1 km storm-relative helicity: 90 m²/s²
0-3 km storm-relative helicity: 86 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.1

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this flash flood watch 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 flash flood watch went out at Jun 28, 11:57 AM MDT, 1 hour 4 minutes earlier.

Area forecast discussion, Jun 28, 11:57 AM MDT, 1 hour 4 minutes before

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Hazardous weather outlook, Jun 28, 12:19 PM MDT, 42 minutes before

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In the hours before

Local storm report, Jun 28, 7:38 AM MDT, 5 hours 23 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BISMARCK ND
838 AM CDT THU JUN 28 2018

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0807 AM     HAIL             9 N HAYNES              46.10N 102.47W
06/28/2018  E2.50 INCH       ADAMS              ND   LAW ENFORCEMENT

            DEPUTY IN ADAMS COUNTY REPORTED DAMAGE TO
            VEHICLES, WITH MANY WINDOWS BROKEN OUT DUE
            TO LARGE HAIL UP TO 2.5 INCHES IN DIAMETER.

&&

TJK

Local storm report, Jun 28, 8:51 AM MDT, 4 hours 10 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BISMARCK ND
951 AM CDT THU JUN 28 2018

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0910 AM     HAIL             14 SW SAINT GERTRUDE    46.15N 101.53W
06/28/2018  M1.00 INCH       GRANT              ND   TRAINED SPOTTER

            QUARTER SIZED HAIL LASTED 5 MINUTES IN
            DURATION. THE DURATION OF THE HAIL EVENT WAS
            5 MINUTES.

&&

KS

Local storm report, Jun 28, 9:07 AM MDT, 3 hours 54 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BISMARCK ND
1007 AM CDT THU JUN 28 2018

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0754 AM     HAIL             7 N HETTINGER           46.10N 102.64W
06/28/2018  E2.75 INCH       ADAMS              ND   PUBLIC

            ADAMS COUNTY EM RELAYED A PUBLIC REPORT OF
            BASEBALL SIZE HAIL, WITH EXTENSIVE DAMAGE TO
            HOMES (BROKEN WINDOWS, DAMAGED
            SIDING/ROOFS). TIME OF REPORT ESTIMATED
            BASED ON RADAR DATA.

&&

TJK

The office that day

Everything else NWS Bismarck, ND issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 28, 1:30 AM MDT	Special Weather Statement	BIS	Morton	45 min
Jun 28, 1:52 AM MDT	Severe Thunderstorm Warning	BIS	Burleigh	53 min
Jun 28, 2:17 AM MDT	Special Weather Statement	BIS	Mercer	28 min
Jun 28, 4:08 AM MDT	Special Weather Statement	BIS	Bowman	52 min
Jun 28, 4:57 AM MDT	Severe Thunderstorm Warning	BIS	Adams, Bowman, Slope	63 min
Jun 28, 5:11 AM MDT	Special Weather Statement	BIS	Slope	49 min
Jun 28, 6:02 AM MDT	Severe Thunderstorm Warning	BIS	Adams, Bowman	58 min
Jun 28, 7:00 AM MDT	Severe Thunderstorm Warning	BIS	Adams, Grant, Sioux	60 min
Jun 28, 7:56 AM MDT	Severe Thunderstorm Warning	BIS	Grant, Sioux	64 min
Jun 28, 8:58 AM MDT	Severe Thunderstorm Warning	BIS	Emmons, Sioux	47 min
Jun 28, 9:37 AM MDT	Severe Thunderstorm Warning	BIS	Grant, Hettinger	53 min
Jun 28, 3:17 PM MDT	Severe Thunderstorm Warning	BIS	McKenzie	43 min
Jun 28, 4:04 PM MDT	Severe Thunderstorm Warning	BIS	McKenzie, Williams	23 min
Jun 28, 5:32 PM MDT	Severe Thunderstorm Warning	BIS	Dunn	58 min

Nearby

Flash Flood Watches in North Dakota, 2018 Every flash flood watch in 2018

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.