Alert archive / North Dakota / Severe Thunderstorm Warnings in 2005

Severe Thunderstorm Warning 4, NWS Bismarck, ND

May 7, 2005Emmons County, McIntosh County, North Dakota

NWS Bismarck, ND issued this severe thunderstorm warning at May 7, 2005, 7:11 PM CDT for Emmons County, McIntosh County, North Dakota. It was in force for 65 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: May 7, 2005, 7:11 PM CDT (00:11 UTC)
Expired: May 7, 2005, 8:16 PM CDT
In force: 65 min
Issued by: NWS Bismarck, ND
Area: Counties, with a storm outline in the text

Counties Emmons County, ND, McIntosh County, ND

The radar

The Bismarck radar (KBIS), 111 km from the middle of the area, began a volume at 00:11 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.

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
May 7, 4:40 PM CDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Bismarck Municip, ND (KBIS), launched 00:00Z, 0.2 hours before the alert went out and 107 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: 92 J/kg
Mixed-layer CIN: -52 J/kg
Mixed-layer LCL: 1597 m above ground
0-6 km bulk shear: 20 kt
0-1 km storm-relative helicity: 49 m²/s²
0-3 km storm-relative helicity: 79 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.

000 
WUUS53 KBIS 080012
SVRBIS
NDC029-051-080115-
/O.NEW.KBIS.SV.W.0004.050508T0011Z-050508T0115Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BISMARCK ND
711 PM CDT SAT MAY 7 2005

THE NATIONAL WEATHER SERVICE IN BISMARCK HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHERN EMMONS COUNTY IN SOUTH CENTRAL NORTH DAKOTA
  MCINTOSH COUNTY IN SOUTHEAST NORTH DAKOTA

* UNTIL 815 PM CDT

* AT 706 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING NICKEL SIZE HAIL.
  THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM 6 MILES      
  SOUTH OF ASHLEY TO 13 MILES SOUTHWEST OF WESTFIELD...OR ALONG A    
  LINE EXTENDING FROM 74 MILES SOUTHWEST OF JAMESTOWN TO 61 MILES    
  SOUTH OF BISMARCK...AND MOVING NORTH AT 25 MPH.

* SEVERE THUNDERSTORMS WILL BE NEAR...
  STRASBURG AROUND 725 PM CDT
  LEHR...WISHEK AND LINTON AROUND 740 PM CDT

DOPPLER RADAR HAS INDICATED SOME WEAK ROTATION WITHIN THIS STORM.
WHILE NOT IMMEDIATELY LIKELY...A TORNADO COULD STILL DEVELOP. IF A
TORNADO IS SPOTTED...ACT QUICKLY AND MOVE TO A PLACE OF SAFETY IN A
STURDY STRUCTURE...SUCH AS A BASEMENT OR SMALL INTERIOR ROOM.

LAT...LON 4594 9918 4593 10052 4628 10056 4628 9921

$$
TWH

2 follow-up statements

000 
WWUS53 KBIS 080044
SVSBIS

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BISMARCK ND
742 PM CDT SAT MAY 7 2005

NDC029-051-080115-
/O.CON.KBIS.SV.W.0004.000000T0000Z-050508T0115Z/
EMMONS ND-MCINTOSH ND-
742 PM CDT SAT MAY 7 2005

...A SEVERE THUNDERSTORM WARNING CONTINUES UNTIL 815 PM CDT FOR
MCINTOSH AND SOUTHERN EMMONS COUNTIES...

AT 741 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING LARGE
DAMAGING HAIL UP TO GOLF BALL SIZE.  THESE STORMS WERE LOCATED ALONG
A LINE EXTENDING FROM 9 MILES NORTH OF ASHLEY TO 12 MILES NORTHWEST 
OF WESTFIELD...MOVING NORTH AT 30 MPH.

SEVERE THUNDERSTORMS WILL BE NEAR...
  WISHEK BY 745 PM CDT
  LEHR BY 750 PM CDT
  LINTON BY 750 PM CDT

DOPPLER RADAR HAS INDICATED SOME WEAK ROTATION WITHIN THIS STORM.
WHILE NOT IMMEDIATELY LIKELY...A TORNADO MAY STILL DEVELOP. IF A
TORNADO IS SPOTTED...ACT QUICKLY AND MOVE TO A PLACE OF SAFETY IN A
STURDY STRUCTURE...SUCH AS A BASEMENT OR SMALL INTERIOR ROOM.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT
SATURDAY EVENING FOR SOUTHEASTERN NORTH DAKOTA.

LAT...LON 4594 9918 4593 10052 4628 10056 4628 9921

$$
TWH

000 
WWUS53 KBIS 080116
SVSBIS

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BISMARCK ND
816 PM CDT SAT MAY 7 2005

NDC029-051-080126-
/O.EXP.KBIS.SV.W.0004.000000T0000Z-050508T0115Z/
EMMONS ND-MCINTOSH ND-
816 PM CDT SAT MAY 7 2005

...THE SEVERE THUNDERSTORM WARNING FOR MCINTOSH AND SOUTHERN EMMONS
COUNTIES EXPIRED AT 815 PM CDT...

THE SEVERE THUNDERSTORM HAS WEAKENED AND NO LONGER POSES A
SIGNIFICANT THREAT.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT
SATURDAY EVENING FOR SOUTHEASTERN NORTH DAKOTA.

LAT...LON 4594 9918 4593 10052 4628 10056 4628 9921

$$
TWH

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 May 7, 3:15 PM CDT, 3 hours 56 minutes earlier.

Area forecast discussion, May 7, 3:15 PM CDT, 3 hours 56 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BISMARCK ND
315 PM CDT SAT MAY 7 2005

.SHORT TERM...
A SLOW MOVING MID LEVEL LOW/TROUGH...WHICH OCCASIONALLY CLOSES
OFF...WILL BE PUSHING ACROSS NORTH DAKOTA TODAY THROUGH EARLY MONDAY
MORNING. THIS WILL BRING NUMEROUS SHOWERS AND THUNDERSTORMS TO OUR
REGION AS THE WEEKEND PROGRESSES. THE FIRST WAVE OF ACTIVITY FROM
LAST NIGHT IS LIFTING EAST AND NORTH OF OUR FORECAST AREA AS ITS
ASSOCIATED SHORT WAVE EXITS THE REGION. THE 4KM WRF MODEL FROM 00Z
LAST NIGHT IS FORECASTING A LINE OF STRONG CONVECTION THIS AFTERNOON
(21Z) FROM NEAR BISMARCK TO BEACH ON THE MONTANA BORDER. THE MODEL
THEN TILTS THIS LINE TO A DEVILS LAKE/BEACH LINE BY 03Z. IF CORRECT
THE BEST CHANCE OF RAIN AND THUNDER IN IN SOUTH CENTRAL NORTH DAKOTA
WILL BE LATE THIS AFTERNOON...WITH THE ACTIVITY THEN SHIFTING TO OUR
NORTHERN ZONES FOR TONIGHT. SUNDAY WILL FIND MOST OF OUR AREA ON THE
NW SIDE OF THE SURFACE TROUGH WHERE SHOWERS AND LEES VIGOROUS
THUNDERSTORMS WILL BE THE MAIN FEATURE. A SMALL SOUTHEASTERN PORTION
OF OUR FORECAST AREA WILL REMAIN ON THE WARM AND MORE ACTIVE SIDE OF
THE FRONT.

.LONG TERM...
WEDNESDAY THROUGH SATURDAY NIGHT...A LONGWAVE TROUGH OVER THE
WESTERN CONUS ON WEDNESDAY EVENTUALLY CUTS OFF FROM THE MAIN FLOW OF
THE WESTERLIES IN CANADA BY THURSDAY...REMAINS OVER THE WESTERN
CONUS FRIDAY...THEN WEAKENS SIGNIFICANTLY WHILE LIFTING NORTHWARD
TOWARDS MONTANA AND THE DAKOTAS. WILL KEEP CHANCE OF SHOWERS IN THE
EXTENDED FOR WEDNESDAY AND THURSDAY WITH STRONGER UPPER TROUGH/LOW
SUPPORT. KEPT THE FORECAST DRY FOR FRIDAY FOR ALL BUT SOUTHWESTERN
NORTH DAKOTA...AND WENT DRY FOR SATURDAY.

&&

.BIS WATCHES/WARNINGS/ADVISORIES...
NONE

&&

RSL/JV

Hazardous weather outlook, May 7, 5:09 AM CDT, 14 hours 2 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE BISMARCK ND
509 AM CDT SAT MAY 7 2005

NDZ001>005-009>013-017>023-025-031>037-040>048-050-051-081008-
ADAMS-BILLINGS-BOTTINEAU-BOWMAN-BURKE-BURLEIGH-DICKEY-DIVIDE-DUNN-
EMMONS-FOSTER-GOLDEN VALLEY-GRANT-HETTINGER-KIDDER-LA MOURE-LOGAN-
MCHENRY-MCINTOSH-MCKENZIE-MCLEAN-MERCER-MORTON-MOUNTRAIL-OLIVER-
PIERCE-RENVILLE-ROLETTE-SHERIDAN-SIOUX-SLOPE-STARK-STUTSMAN-WARD-
WELLS-WILLIAMS-
INCLUDING THE CITIES OF...WILLISTON...MINOT...JAMESTOWN...
DICKINSON...CROSBY...BOWMAN...BOTTINEAU...BISMARCK...MANDAN...
WATFORD CITY...WASHBURN...STANLEY...RUGBY...MOTT...MEDORA...LINTON...
HETTINGER...HARVEY...ELLENDALE...CARRINGTON...BEULAH...BELCOURT...
BEACH AND ASHLEY
509 AM CDT SAT MAY 7 2005

THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN AND CENTRAL NORTH
DAKOTA.

.DAY ONE...TODAY AND TONIGHT

A LOW PRESSURE SYSTEM IN SOUTHEASTERN MONTANA THIS MORNING WAS
PULLING MOISTURE AND WARM AIR INTO THE REGION.  TEMPERATURES SHOULD
REACH THE 70S AND LOWER 80S THIS AFTERNOON AND THE ATMOSPHERE
WILL BECOME VERY UNSTABLE. THUNDERSTORMS ARE LIKELY TODAY...SOME
POSSIBLY SEVERE WITH LARGE HAIL AND BRIEF HEAVY RAIN.

.DAYS TWO THROUGH SEVEN...

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE REQUIRED.

The office that day

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

Issued	Product	Office	Counties	Lasted
May 7, 8:27 PM CDT	Severe Thunderstorm Warning	BIS	Dickey, LaMoure	64 min
May 7, 9:54 PM CDT	Flash Flood Warning	BIS	McLean, Oliver	15 hr
May 8, 3:20 PM CDT	Severe Thunderstorm Warning	BIS	Grant	55 min
May 8, 3:33 PM CDT	Tornado Warning	BIS	Dickey, McIntosh	43 min
May 8, 4:03 PM CDT	Severe Thunderstorm Warning	BIS	Morton	27 min
May 8, 4:16 PM CDT	Severe Thunderstorm Warning	BIS	Dickey	59 min
May 8, 4:32 PM CDT	Severe Thunderstorm Warning	BIS	Grant, Morton	43 min
May 8, 4:57 PM CDT	Severe Thunderstorm Warning	BIS	LaMoure	71 min
May 8, 5:17 PM CDT	Severe Thunderstorm Warning	BIS	Dickey	59 min
May 8, 5:19 PM CDT	Severe Thunderstorm Warning	BIS	Morton	29 min
May 8, 5:57 PM CDT	Severe Thunderstorm Warning	BIS	Stutsman	63 min
May 8, 6:27 PM CDT	Severe Thunderstorm Warning	BIS	Dickey	63 min
May 8, 6:28 PM CDT	Flash Flood Warning	BIS	Morton	3 hr
May 8, 6:50 PM CDT	Severe Thunderstorm Warning	BIS	LaMoure	55 min

Nearby

Severe Thunderstorm Warnings in North Dakota, 2005 Every severe thunderstorm warning in 2005

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.