Alert archive / North Dakota / Severe Thunderstorm Warnings in 2013

Severe Thunderstorm Warning 234, NWS Bismarck, ND

September 18, 2013Divide County, Williams County, North Dakota

NWS Bismarck, ND issued this severe thunderstorm warning at Sep 18, 2013, 7:41 PM CDT for Divide County, Williams County, North Dakota. It was in force for 49 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 18, 2013, 7:41 PM CDT (00:41 UTC)
Expired: Sep 18, 2013, 8:30 PM CDT
In force: 49 min
Issued by: NWS Bismarck, ND
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Divide County, ND, Williams County, ND

The radar

The Minot AFB radar (KMBX), 194 km from the middle of the area, began a volume at 00:41 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 290 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: 1450 J/kg
Mixed-layer CIN: -55 J/kg
Mixed-layer LCL: 1080 m above ground
0-6 km bulk shear: 45 kt
0-1 km storm-relative helicity: 35 m²/s²
0-3 km storm-relative helicity: 44 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 1.2

Open this sounding in Storm Lab

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 18, 6:05 PM CDT, 1 hour 36 minutes earlier.

Area forecast discussion, Sep 18, 6:05 PM CDT, 1 hour 36 minutes before

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Hazardous weather outlook, Sep 18, 6:24 PM CDT, 1 hour 17 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE BISMARCK ND
624 PM CDT WED SEP 18 2013

NDZ045>048-050-051-192330-
SIOUX-EMMONS-LOGAN-LA MOURE-MCINTOSH-DICKEY-
624 PM CDT WED SEP 18 2013

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTH CENTRAL
NORTH DAKOTA AND SOUTHEAST NORTH DAKOTA.

.DAY ONE...TONIGHT

A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR THE AREA THROUGH
MIDNIGHT CDT. GO TO WWW.WEATHER.GOV/BIS FOR ADDITIONAL
INFORMATION.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

THERE IS A SLIGHT CHANCE OF THUNDERSTORMS SUNDAY NIGHT AND MONDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED THIS EVENING.

NDZ001>005-009>013-017>023-025-031>037-040>044-192330-
DIVIDE-BURKE-RENVILLE-BOTTINEAU-ROLETTE-WILLIAMS-MOUNTRAIL-WARD-
MCHENRY-PIERCE-MCKENZIE-DUNN-MERCER-OLIVER-MCLEAN-SHERIDAN-WELLS-
FOSTER-GOLDEN VALLEY-BILLINGS-STARK-MORTON-BURLEIGH-KIDDER-
STUTSMAN-SLOPE-HETTINGER-GRANT-BOWMAN-ADAMS-
624 PM CDT WED SEP 18 2013 /524 PM MDT WED SEP 18 2013/

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTH CENTRAL
NORTH DAKOTA...NORTHWEST NORTH DAKOTA...SOUTH CENTRAL NORTH
DAKOTA...SOUTHEAST NORTH DAKOTA AND SOUTHWEST NORTH DAKOTA.

.DAY ONE...TONIGHT

SCATTERED THUNDERSTORMS ARE EXPECTED THROUGH TONIGHT. AN ISOLATED
SEVERE STORMS IS POSSIBLE...WITH THE MAIN THREATS OF QUARTER SIZE
HAIL AND ISOLATED WIND GUSTS AROUND 60 MPH.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

ISOLATED THUNDERSTORMS ARE POSSIBLE THURSDAY...BUT WILL NOT BE
SEVERE. THERE IS ALSO A SLIGHT CHANCE OF THUNDERSTORMS SUNDAY AND
SUNDAY NIGHT.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS POSSIBLE THROUGH THE EVENING...BUT NOT LIKELY.

TWH

In the hours before

Local storm report, Sep 18, 6:13 PM CDT, 1 hour 28 minutes before

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Special weather statement, Sep 18, 6:32 PM CDT, 1 hour 9 minutes before

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Local storm report, Sep 18, 7:02 PM CDT, 39 minutes before

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Special weather statement, Sep 18, 7:04 PM CDT, 37 minutes before

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Special weather statement, Sep 18, 7:22 PM CDT, 19 minutes before

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Special weather statement, Sep 18, 7:38 PM CDT, 3 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BISMARCK ND
738 PM CDT WED SEP 18 2013

NDZ002-190145-
BURKE-
738 PM CDT WED SEP 18 2013

...SPECIAL WEATHER STATEMENT...

AT 732 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM NEAR LIGNITE...OR 32 MILES EAST OF CROSBY...
MOVING NORTHEAST AT 25 MPH.

ONE HALF INCH DIAMETER HAIL...WINDS UP TO 30 MPH...WILL ACCOMPANY
THIS STORM.

LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE...
  FLAXTON...
  BOWBELLS...
  NORTHGATE...

GUSTY WINDS MAY CAUSE SMALL OBJECTS SUCH AS TRASH BINS TO BLOW
AROUND. SEEK SHELTER IN A STURDY STRUCTURE UNTIL THIS STORM HAS
PASSED.

LAT...LON 4900 10201 4881 10203 4881 10208 4881 10215
      4879 10216 4873 10261 4899 10279 4901 10202
TIME...MOT...LOC 0039Z 243DEG 23KT 4885 10255

ABELING

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 18, 7:04 PM CDT	Special Weather Statement	BIS	Divide, Williams	56 min
Sep 18, 7:22 PM CDT	Special Weather Statement	BIS	Divide	38 min
Sep 18, 7:38 PM CDT	Special Weather Statement	BIS	Burke	67 min
Sep 18, 8:17 PM CDT	Special Weather Statement	BIS	Billings	43 min
Sep 18, 8:28 PM CDT	Severe Thunderstorm Warning	BIS	Burke, Divide, Williams	62 min
Sep 18, 8:32 PM CDT	Special Weather Statement	BIS	Emmons	58 min
Sep 18, 8:45 PM CDT	Severe Thunderstorm Warning	BIS	Emmons, Logan, McIntosh	60 min
Sep 18, 9:11 PM CDT	Areal Flood Advisory	BIS	Burke, Divide	6 hr
Sep 18, 9:30 PM CDT	Special Weather Statement	BIS	Burke, Mountrail	60 min
Sep 18, 9:45 PM CDT	Special Weather Statement	BIS	Dickey, LaMoure, McIntosh	60 min
Sep 18, 10:06 PM CDT	Severe Thunderstorm Warning	BIS	Burke, Mountrail, Renville, Ward	54 min
Sep 18, 10:25 PM CDT	Special Weather Statement	BIS	Dickey, LaMoure	35 min
Sep 18, 10:49 PM CDT	Severe Thunderstorm Warning	BIS	Bottineau, Renville	56 min
Sep 18, 11:36 PM CDT	Severe Thunderstorm Warning	BIS	Bottineau	54 min
Sep 19, 12:11 AM CDT	Special Weather Statement	BIS	Bottineau	34 min
Sep 19, 12:39 AM CDT	Special Weather Statement	BIS	Rolette	36 min
Sep 19, 3:24 PM CDT	Frost Advisory	BIS	Adams, Billings, Bowman, Burke, Divide, Dunn and 7 more	18 hr

Nearby

Severe Thunderstorm Warnings in North Dakota, 2013 Every severe thunderstorm warning in 2013

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.