Alert archive / North Dakota / Special Weather Statements in 2018

Special Weather Statement, NWS Bismarck, ND

August 4, 2018Stutsman County, North Dakota

NWS Bismarck, ND issued this special weather statement at Aug 4, 2018, 7:40 PM CDT for Stutsman County, North Dakota. It was in force for 35 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, 2018, 7:40 PM CDT (00:40 UTC)
Expired
Aug 4, 2018, 8:15 PM CDT
In force
35 min
Issued by
NWS Bismarck, ND

County Stutsman County, ND

The radar

The Bismarck radar (KBIS), 108 km from the middle of the area, began a volume at 00:44 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, 0.7 hours before the alert went out and 103 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-pSkew-T log-p diagram, Bismarck Municip, ND at 00:00Z on 2018-08-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 743 joules per kilogram.LCLEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Bismarck Municip, ND at 00:00Z on 2018-08-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 79 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
743 J/kg
Mixed-layer CIN
-13 J/kg
Mixed-layer LCL
2786 m above ground
0-6 km bulk shear
31 kt
0-1 km storm-relative helicity
79 m²/s²
0-3 km storm-relative helicity
113 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.5

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement 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 special weather statement went out at Aug 4, 7:01 PM CDT, 39 minutes earlier.

Area forecast discussion, Aug 4, 7:01 PM CDT, 39 minutes before
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Hazardous weather outlook, Aug 4, 6:42 PM CDT, 58 minutes before
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In the hours before

Local storm report, Aug 4, 5:52 PM CDT, 1 hour 48 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BISMARCK ND
552 PM CDT SAT AUG 4 2018

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

0518 PM     HAIL             11 SSE GOODRICH         47.33N 100.07W
08/04/2018  E1.00 INCH       KIDDER             ND   TRAINED SPOTTER

            MOSTLY PEA TO DIME SIZE HAIL WITH A FEW AS
            LARGE AS A QUARTER. TIME ESTIMATED FROM
            RADAR.

&&

ZH
Special weather statement, Aug 4, 5:55 PM CDT, 1 hour 45 minutes before
Special Weather Statement
National Weather Service Bismarck ND
555 PM CDT SAT AUG 4 2018

NDZ034-042-045-042345-
Grant-Sioux-Morton-
555 PM CDT SAT AUG 4 2018

...A STRONG THUNDERSTORM WILL AFFECT CENTRAL SIOUX...SOUTH CENTRAL
MORTON AND SOUTHEASTERN GRANT COUNTIES UNTIL 645 PM CDT/545 PM
MDT/...

At 555 PM CDT/455 PM MDT/, a strong thunderstorm was located 10 miles
south of Carson, or 18 miles southeast of Elgin, moving east at 30
mph.

Winds gusts to 40 mph and nickel size hail are possible with this
storm.

Locations impacted include...
Shields, Raleigh, St. Gertrude and Porcupine.

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

LAT...LON 4618 10160 4635 10162 4641 10098 4611 10100
TIME...MOT...LOC 2255Z 266DEG 26KT 4627 10151

HEINERT
Special weather statement, Aug 4, 6:13 PM CDT, 1 hour 27 minutes before
Special Weather Statement
National Weather Service Bismarck ND
613 PM CDT SAT AUG 4 2018

NDZ036-042345-
Kidder-
613 PM CDT SAT AUG 4 2018

...A STRONG THUNDERSTORM WILL AFFECT NORTHERN KIDDER COUNTY UNTIL 645
PM CDT...

At 612 PM CDT, a strong thunderstorm was located near Tuttle, or 18
miles north of Steele, moving east at 25 mph.

Penny size hail is possible with this storm.

Locations impacted include...
Tuttle, Pettibone, Robinson, Lake Williams and Horsehead Lake.

Frequent cloud to ground lightning is occurring with this storm.
Seek a safe shelter inside a building or vehicle.

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

LAT...LON 4702 10006 4720 10004 4720 9948 4698 9948
      4698 9945 4696 9945
TIME...MOT...LOC 2312Z 273DEG 21KT 4712 9994

HEINERT
Special weather statement, Aug 4, 7:17 PM CDT, 23 minutes before
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Special weather statement, Aug 4, 7:31 PM CDT, 9 minutes before
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Special weather statement, Aug 4, 7:40 PM CDT, 0 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Aug 4, 7:17 PM CDTSpecial Weather StatementBISSioux43 min
Aug 4, 7:31 PM CDTSpecial Weather StatementBISStutsman29 min
Aug 4, 8:02 PM CDTSpecial Weather StatementBISEmmons28 min
Aug 4, 8:14 PM CDTSpecial Weather StatementBISLogan31 min
Aug 4, 8:45 PM CDTSpecial Weather StatementBISLogan30 min

Nearby

Special Weather Statements in North Dakota, 2018Every special weather statement 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.