Alert archive / North Dakota / Special Weather Statements in 2015

Special Weather Statement, NWS Bismarck, ND

August 6, 20158 counties in North Dakota

NWS Bismarck, ND issued this special weather statement at Aug 6, 2015, 1:36 PM CDT for 8 counties in 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 6, 2015, 1:36 PM CDT (18:36 UTC)
Expired: Aug 6, 2015, 2:15 PM CDT
In force: 39 min
Issued by: NWS Bismarck, ND

Counties Burleigh County, ND, Dickey County, ND, Emmons County, ND, Kidder County, ND, LaMoure County, ND, Logan County, ND, McIntosh County, ND, Stutsman County, ND

The radar

The Bismarck radar (KBIS), 85 km from the middle of the area, began a volume at 18:36 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 nearest sounding before it

Bismarck Municip, ND (KBIS), launched 12:00Z, 6.6 hours before the alert went out and 81 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: 861 J/kg
Mixed-layer CIN: -77 J/kg
Mixed-layer LCL: 709 m above ground
0-6 km bulk shear: 13 kt
0-1 km storm-relative helicity: -43 m²/s²
0-3 km storm-relative helicity: 1 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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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 6, 12:23 PM CDT, 1 hour 13 minutes earlier.

Area forecast discussion, Aug 6, 12:23 PM CDT, 1 hour 13 minutes before

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Hazardous weather outlook, Aug 6, 12:19 PM CDT, 1 hour 17 minutes before

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In the hours before

Special weather statement, Aug 6, 7:37 AM CDT, 5 hours 59 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BISMARCK ND
737 AM CDT THU AUG 6 2015

NDZ045-046-061300-
EMMONS ND-SIOUX ND-
737 AM CDT THU AUG 6 2015

...THUNDERSTORMS WITH HEAVY RAINFALL ACROSS EASTERN SIOUX INTO
EMMONS COUNTIES...

AT 736 AM CDT...DOPPLER RADAR WAS TRACKING A LINE OF STRONG
THUNDERSTORMS ALONG A LINE EXTENDING FROM 13 MILES EAST OF LINTON TO
PRAIRIE KNIGHTS RESORT...AND MOVING NORTHEAST AT 10 MPH.

VERY HEAVY RAINFALL IS ALSO OCCURRING WITH THESE STORMS...AND MAY
LEAD TO FLASH FLOODING.

LOCATIONS IMPACTED INCLUDE...
LINTON...PRAIRIE KNIGHTS RESORT...BEAVER BAY RECREATION AREA AND
TEMVIK.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED ROADWAYS.

&&

LAT...LON 4643 9993 4635 10065 4619 10075 4622 9992
TIME...MOT...LOC 1236Z 237DEG 9KT 4634 9996 4626 10061

AYD

Local storm report, Aug 6, 8:14 AM CDT, 5 hours 22 minutes before

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Local storm report, Aug 6, 8:18 AM CDT, 5 hours 18 minutes before

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Special weather statement, Aug 6, 8:24 AM CDT, 5 hours 12 minutes before

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Special weather statement, Aug 6, 1:36 PM CDT, 0 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BISMARCK ND
136 PM CDT THU AUG 6 2015

NDZ025-035>037-046>048-050-051-061915-
STUTSMAN ND-DICKEY ND-MCINTOSH ND-LA MOURE ND-LOGAN ND-EMMONS ND-
BURLEIGH ND-KIDDER ND-FOSTER ND-
136 PM CDT THU AUG 6 2015

...THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS SOUTH CENTRAL NORTH
DAKOTA...

AT 130 PM CDT...DOPPLER RADAR WAS TRACKING A COMPLEX OF STRONG
THUNDERSTORMS EAST OF THE MISSOURI RIVER AND ALONG AND SOUTH OF
INTERSTATE 94. SLOW MOVING STORMS ARE PRODUCING HEAVY RAINFALL...IN
EXCESS OF 2 INCHES AN HOUR. RAPID RISES IN CREEKS AND STREAMS ARE
POSSIBLE. FLOODING MAY OCCUR WITH LITTLE NOTICE. DO NOT DRIVE ACROSS
FLOODED ROADS...TURN AROUND...DON'T DROWN. VISIT
WEATHER.GOV/BISMARCK FOR THE LATEST INFORMATION.

LOCATIONS IMPACTED INCLUDE...
JAMESTOWN...OAKES...ELLENDALE...LINTON...NAPOLEON...ASHLEY...
STEELE...EDGELEY...MEDINA...WISHEK...LAMOURE...STRASBURG...KULM...
GACKLE...HAZELTON...WIMBLEDON...TAPPEN...STREETER...KENSAL AND
MENOKEN.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

VERY HEAVY RAINFALL IS OCCURRING WITH THESE STORMS...AND MAY LEAD TO
FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED ROADWAYS.

&&

LAT...LON 4595 10048 4645 10060 4654 10054 4663 10063
      4709 10073 4732 9997 4733 9847 4665 9844
      4663 9804 4594 9801
TIME...MOT...LOC 1830Z 265DEG 14KT 4713 9981 4634 9907

JONES

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 5, 7:40 PM CDT	Special Weather Statement	BIS	Pierce	50 min
Aug 6, 7:37 AM CDT	Special Weather Statement	BIS	Emmons	23 min
Aug 6, 7:56 AM CDT	Flash Flood Warning	BIS	Emmons, Logan	6 hr
Aug 6, 8:24 AM CDT	Special Weather Statement	BIS	Logan	36 min
Aug 6, 1:56 PM CDT	Areal Flood Advisory	BIS	Emmons	3 hr
Aug 6, 2:23 PM CDT	Areal Flood Advisory	BIS	Kidder	3 hr

Nearby

Special Weather Statements in North Dakota, 2015 Every special weather statement in 2015

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.