Alert archive / North Dakota / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 138, NWS Bismarck, ND

July 19, 2012McLean County, North Dakota

NWS Bismarck, ND issued this severe thunderstorm warning at Jul 19, 2012, 7:45 PM CDT for McLean County, North Dakota. It was in force for 38 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Jul 19, 2012, 7:45 PM CDT (00:45 UTC)
Expired: Jul 19, 2012, 8:23 PM CDT
In force: 38 min
Issued by: NWS Bismarck, ND
Area: Storm-based polygon
Hail: 1.0 in
Wind: 70.0 mph

County McLean County, ND

What was reported inside it

Time	Report	Where	Remark
Jul 19, 7:46 PM CDT	TSTM WND DMG	Garrison, ND	SEVERAL TREES DOWN AND UPROOTED. ESTIMATED TREE DIAMETERS UP TO 25 INCHES UPROOTED WITH UP TO 18 INCH DIAMETER BRANCHES BROKEN. REPORTED BY CORY NORDQUIST.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

Did it verify

Verified. The Iowa Environmental Mesonet's Cow matched one storm report to this severe thunderstorm warning; the first came 1 minutes after it went out.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The nearest sounding before it

Bismarck Municip, ND (KBIS), launched 00:00Z, 0.8 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-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: 325 J/kg
Mixed-layer CIN: -218 J/kg
Mixed-layer LCL: 3455 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: 48 m²/s²
0-3 km storm-relative helicity: 70 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

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

708 
WUUS53 KBIS 200045
SVRBIS
NDC055-200145-
/O.NEW.KBIS.SV.W.0138.120720T0045Z-120720T0145Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BISMARCK ND
745 PM CDT THU JUL 19 2012

THE NATIONAL WEATHER SERVICE IN BISMARCK HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHEASTERN MCLEAN COUNTY IN SOUTH CENTRAL NORTH DAKOTA

* UNTIL 845 PM CDT

* AT 743 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
  DESTRUCTIVE WINDS IN EXCESS OF 70 MPH.  THIS STORM WAS LOCATED NEAR
  GARRISON...OR 42 MILES SOUTH OF MINOT...AND MOVING EAST AT 30 MPH.

* LOCATIONS IMPACTED INCLUDE...
  COLEHARBOR...BENEDICT...RUSO AND STRAWBERRY LAKE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF YOU ARE IN THE PATH OF THIS STORM...TAKE SHELTER IN A STURDY
BUILDING...AND STAY AWAY FROM WINDOWS.

IF ON OR NEAR A LAKE OR RIVER...GET OUT OF THE WATER AND MOVE INDOORS
OR INSIDE A VEHICLE. IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH
TO BE STRUCK BY LIGHTNING. IN ADDITION...THUNDERSTORMS CAN PRODUCE
LARGE CAPSIZING WAVES...EVEN ON SMALL BODIES OF WATER. MOVE INTO DOCK
AND SEEK SAFE SHELTER NOW. DON'T BE CAUGHT ON THE WATER IN A
THUNDERSTORM.

&&

LAT...LON 4756 10069 4752 10112 4752 10137 4756 10143
      4756 10147 4769 10152 4778 10138 4784 10116
      4785 10072
TIME...MOT...LOC 0045Z 255DEG 26KT 4763 10135
WIND...HAIL 70MPH 1.00IN

$$

HEINERT

3 follow-up statements

683 
WWUS53 KBIS 200055
SVSBIS

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BISMARCK ND
755 PM CDT THU JUL 19 2012

NDC055-200145-
/O.CON.KBIS.SV.W.0138.000000T0000Z-120720T0145Z/
MCLEAN ND-
755 PM CDT THU JUL 19 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHEASTERN
MCLEAN COUNTY UNTIL 845 PM CDT...

AT 752 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING DESTRUCTIVE WINDS IN EXCESS
OF 70 MPH.  THIS STORM WAS LOCATED 6 MILES EAST OF GARRISON...OR 41
MILES SOUTH OF MINOT...MOVING EAST AT 30 MPH.

LOCATIONS IMPACTED INCLUDE...
  BENEDICT...RUSO AND STRAWBERRY LAKE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS STORM HAS A HISTORY OF PRODUCING DAMAGING WINDS IN EXCESS OF 60 
MPH. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY AWAY FROM 
WINDOWS.

VERY HEAVY RAIN IS ALSO OCCURRING WITH THIS STORM...AND MAY LEAD TO
FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED ROADWAYS.

&&

LAT...LON 4756 10069 4752 10112 4752 10137 4756 10143
      4756 10147 4769 10152 4778 10138 4784 10116
      4785 10072
TIME...MOT...LOC 0054Z 255DEG 26KT 4765 10126
WIND...HAIL 70MPH <.75IN

$$

HEINERT/SCHECK

347 
WWUS53 KBIS 200111
SVSBIS

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BISMARCK ND
811 PM CDT THU JUL 19 2012

NDC055-200145-
/O.CON.KBIS.SV.W.0138.000000T0000Z-120720T0145Z/
MCLEAN ND-
811 PM CDT THU JUL 19 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHEASTERN
MCLEAN COUNTY UNTIL 845 PM CDT...

AT 810 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF
60 MPH.  THIS STORM WAS LOCATED 8 MILES SOUTHWEST OF STRAWBERRY
LAKE...OR 38 MILES SOUTH OF MINOT...MOVING EAST AT 30 MPH.

LOCATIONS IMPACTED INCLUDE...
  RUSO AND STRAWBERRY LAKE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

REPORT SEVERE WEATHER TO THE NATIONAL WEATHER SERVICE IN BISMARCK AT
701-223-4582.

&&

LAT...LON 4756 10069 4754 10112 4758 10129 4770 10135
      4778 10129 4784 10116 4785 10072
TIME...MOT...LOC 0112Z 256DEG 27KT 4771 10101
WIND...HAIL 60MPH <.75IN

$$

HEINERT

930 
WWUS53 KBIS 200123
SVSBIS

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BISMARCK ND
823 PM CDT THU JUL 19 2012

NDC055-200133-
/O.CAN.KBIS.SV.W.0138.000000T0000Z-120720T0145Z/
MCLEAN ND-
823 PM CDT THU JUL 19 2012

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN MCLEAN COUNTY IS
CANCELLED...

THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR PROPERTY.
 HOWEVER GUSTY WINDS ARE STILL POSSIBLE WITH THIS THUNDERSTORM.

REPORT SEVERE WEATHER TO THE NATIONAL WEATHER SERVICE IN BISMARCK AT
701-223-4582.

LAT...LON 4756 10069 4754 10112 4758 10129 4770 10135
      4778 10129 4784 10116 4785 10072
TIME...MOT...LOC 0123Z 256DEG 27KT 4773 10089

$$

HEINERT

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 Jul 19, 7:02 PM CDT, 43 minutes earlier.

Area forecast discussion, Jul 19, 7:02 PM CDT, 43 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BISMARCK ND
702 PM CDT THU JUL 19 2012

.DISCUSSION...
TWO SEVERE THUNDERSTORMS CURRENTLY ONGOING FROM SPLITTING STORM
EARLIER THIS AFTERNOON...ONE OVER KMOT AND THE OTHER OVER SOUTHERN
LAKE SAKAKAWEA. THIS APPEAR TO BE LONG LIVED AND WILL CONTINUE TO
RADAR TEAMS .

&&

.AVIATION...
THUNDERSTORM IS MOVING THROUGH KMOT AND WILL CONTINUE TO THE EAST.
SEVERAL SCATTERED THUNDERSTORMS EXTEND SOUTHWEST THROUGH THE KDIK
VICINTITY. WILL KEEP VCTS IN ALL TAF SITES EXCEPT KISN.

&&

.BIS WATCHES/WARNINGS/ADVISORIES...
HEAT ADVISORY UNTIL 10 PM CDT /9 PM MDT/ THIS EVENING FOR
NDZ001>005-009>013-017>023-025-031>037-040>048-050-051.

&&

SHORT TERM...HW
AVIATION...HW

Hazardous weather outlook, Jul 19, 3:04 PM CDT, 4 hours 41 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE BISMARCK ND
304 PM CDT THU JUL 19 2012

NDZ001>005-009>013-017>023-025-031>037-040>048-050-051-202015-
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-SIOUX-EMMONS-LOGAN-
LA MOURE-MCINTOSH-DICKEY-
304 PM CDT THU JUL 19 2012 /204 PM MDT THU JUL 19 2012/

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...THIS AFTERNOON AND TONIGHT

A HEAT ADVISORY IS IN EFFECT FOR WEST AND CENTRAL NORTH DAKOTA
THIS THURSDAY AFTERNOON AND EVENING. DANGEROUS HEAT INDEX VALUES
OF 100-105 DEGREES ARE EXPECTED OVER MOST AREAS.

THERE IS A CHANCE OF THUNDERSTORMS ACROSS WESTERN AND CENTRAL NORTH
DAKOTA THURSDAY AFTERNOON AND THURSDAY NIGHT. A FEW OF THESE
STORMS MAY BE STRONG TO SEVERE WITH LARGE HAIL AND DAMAGING WINDS.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY

THERE IS A CONTINUED CHANCE FOR THUNDERSTORMS OFF AND ON FROM FRIDAY
THROUGH WEDNESDAY. AT THIS TIME IT APPEARS THE BEST CHANCE FOR
MORE WIDESPREAD SHOWERS AND THUNDERSTORMS WILL BE MONDAY NIGHT
THROUGH TUESDAY NIGHT.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED LATE THIS AFTERNOON AND EVENING.

JV

In the hours before

Local storm report, Jul 19, 5:50 PM CDT, 1 hour 55 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BISMARCK ND
550 PM CDT THU JUL 19 2012

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

0530 PM     HAIL             5 SE PARSHALL BAY RECRE 47.87N 102.22W
07/19/2012  E0.75 INCH       MOUNTRAIL          ND   TRAINED SPOTTER

            HAIL STARTED AROUND 530 PM AND ENDED AROUND 538 PM

&&

KROLAK

Special weather statement, Jul 19, 6:06 PM CDT, 1 hour 39 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BISMARCK ND
606 PM CDT THU JUL 19 2012

NDZ011-192345-
WARD-
606 PM CDT THU JUL 19 2012

...SPECIAL WEATHER STATEMENT...

AT 602 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THE
LEADING EDGE OF OUTFLOW FROM A SEVERE THUNDERSTORM 20 MILES
SOUTHWEST OF MINOT...MOVING NORTHEAST AT 35 MPH.

WINDS UP TO 55 MPH...ARE LIKELY WITH THE LEADING EDGE OF THE OUTFLOW
FROM THIS STORM.

* THE OUTFLOW FROM THE THUNDERSTORM WILL BE NEAR...
  MINOT BY 635 PM CDT...

GUSTY WINDS MAY CAUSE SMALL BRANCHES TO BE BLOWN DOWN...AND LOOSE
OBJECTS TO BLOW AROUND. SEEK SHELTER IN A STURDY STRUCTURE UNTIL THIS
STORM HAS PASSED.

Local storm report, Jul 19, 6:33 PM CDT, 1 hour 12 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BISMARCK ND
633 PM CDT THU JUL 19 2012

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

0630 PM     HAIL             DES LACS                48.26N 101.56W
07/19/2012  E0.75 INCH       WARD               ND   TRAINED SPOTTER

            HAIL LASTED ONLY A FEW MINUTES APPROXIMATELY FROM 620
            TO 625 PM. RAIN WAS GETTING HEAVIER AT THE TIME OF THE
            CALL.

&&

KROLAK

Local storm report, Jul 19, 6:45 PM CDT, 1 hour before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BISMARCK ND
645 PM CDT THU JUL 19 2012

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

0610 PM     HAIL             15 SW DES LACS          48.10N 101.79W
07/19/2012  M1.00 INCH       WARD               ND   PUBLIC

            HAIL LASTED 610 PM TO 630 PM CDT. ALSO 0.60 INCHES OF
            RAIN.

&&

KSIMOSKO

Special weather statement, Jul 19, 7:38 PM CDT, 7 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BISMARCK ND
738 PM CDT THU JUL 19 2012

NDZ012-013-200115-
MCHENRY-PIERCE-
738 PM CDT THU JUL 19 2012

...SPECIAL WEATHER STATEMENT...

AT 734 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM OVER EAST CENTRAL MCHENRY COUNTY...MOVING EAST AT
20 MPH.

WINDS GREATER THAN 30 MPH...BRIEF HEAVY DOWNPOURS...ARE POSSIBLE WITH
THIS STORM.

* THE THUNDERSTORM WILL BE NEAR...
  BERWICK BY 755 PM CDT...

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

SIMOSKO

Special weather statement, Jul 19, 7:44 PM CDT, 1 minute before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BISMARCK ND
744 PM CDT THU JUL 19 2012

NDZ013-200115-
PIERCE-
744 PM CDT THU JUL 19 2012

...SPECIAL WEATHER STATEMENT...

AT 739 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM OVER CENTRAL PIERCE COUNTY...7 MILES EAST OF
RUGBY...MOVING EAST AT 35 MPH.

PEA SIZE HAIL...WINDS GREATER THAN 30 MPH...BRIEF HEAVY DOWNPOURS...
ARE POSSIBLE WITH THIS STORM.

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

SIMOSKO

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 19, 7:02 PM CDT	Severe Thunderstorm Warning	BIS	McHenry, Ward	27 min
Jul 20, 12:20 AM CDT	Severe Thunderstorm Warning	BIS	McLean, Mercer	55 min
Jul 20, 2:13 AM CDT	Areal Flood Advisory	BIS	LaMoure	5 hr
Jul 20, 3:43 AM CDT	Severe Thunderstorm Warning	BIS	Stutsman	52 min

Nearby

Severe Thunderstorm Warnings in North Dakota, 2012 Every severe thunderstorm warning in 2012

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive.