Alert archive / North Dakota / Tornado Warnings in 2010

Tornado Warning 61, NWS Bismarck, ND

July 14, 2010Sioux County, North Dakota

NWS Bismarck, ND issued this tornado warning at Jul 14, 2010, 2:58 AM CDT for Sioux County, North Dakota. It was in force for 32 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: Jul 14, 2010, 2:58 AM CDT (07:58 UTC)
Expired: Jul 14, 2010, 3:30 AM CDT
In force: 32 min
Issued by: NWS Bismarck, ND
Area: Storm-based polygon

County Sioux County, ND

The radar

The Bismarck radar (KBIS), 107 km from the middle of the area, began a volume at 07:58 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 tornado 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
Jul 13, 10:58 PM CDT	Severe Thunderstorm Watch	SPC	7 hr
Jul 14, 1:02 AM CDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Bismarck Municip, ND (KBIS), launched 00:00Z, 8.0 hours before the alert went out and 110 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: 2253 J/kg
Mixed-layer CIN: -20 J/kg
Mixed-layer LCL: 916 m above ground
0-6 km bulk shear: 64 kt
0-1 km storm-relative helicity: -48 m²/s²
0-3 km storm-relative helicity: 75 m²/s²
Significant tornado parameter: 0.5
Supercell composite: 2.1

Open this sounding in Storm Lab

The text

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

788 
WFUS53 KBIS 140758
TORBIS
NDC085-140830-
/O.NEW.KBIS.TO.W.0061.100714T0758Z-100714T0830Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE BISMARCK ND
158 AM MDT WED JUL 14 2010

THE NATIONAL WEATHER SERVICE IN BISMARCK HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHWESTERN SIOUX COUNTY IN SOUTH CENTRAL NORTH DAKOTA...

* UNTIL 230 AM MDT/330 AM CDT/

* AT 154 AM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS
  STORM WAS LOCATED NEAR KELDRON...OR 17 MILES EAST OF LEMMON...AND
  MOVING EAST AT 40 MPH.

* LOCATIONS IMPACTED INCLUDE...
  MAINLY RURAL AREAS OF SOUTHWESTERN SIOUX COUNTY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.

&&

LAT...LON 4594 10191 4602 10191 4603 10170 4602 10169
      4603 10164 4601 10156 4603 10154 4603 10151
      4605 10149 4606 10128 4594 10123
TIME...MOT...LOC 0758Z 269DEG 33KT 4596 10176

$$

AYD

2 follow-up statements

945 
WWUS53 KBIS 140814
SVSBIS

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BISMARCK ND
314 AM CDT WED JUL 14 2010

NDC085-140830-
/O.CON.KBIS.TO.W.0061.000000T0000Z-100714T0830Z/
SIOUX ND-
214 AM MDT WED JUL 14 2010

...A TORNADO WARNING REMAINS IN EFFECT FOR SOUTH CENTRAL SIOUX COUNTY
UNTIL 230 AM MDT/330 AM CDT/...

AT 212 AM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO.  THIS DANGEROUS
STORM WAS LOCATED NEAR WATAUGA...OR 28 MILES EAST OF LEMMON...MOVING
EAST AT 40 MPH.

THIS DANGEROUS STORM WILL AFFECT MAINLY RURAL AREAS OF SOUTH CENTRAL
SIOUX COUNTY.

LARGE HAIL IS ALSO POSSIBLE WITH THIS STORM.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.

&&

LAT...LON 4594 10166 4602 10169 4603 10164 4601 10156
      4603 10154 4603 10151 4605 10149 4606 10128
      4594 10123
TIME...MOT...LOC 0814Z 271DEG 33KT 4595 10154

$$

AYD

997 
WWUS53 KBIS 140828
SVSBIS

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BISMARCK ND
328 AM CDT WED JUL 14 2010

NDC085-140838-
/O.EXP.KBIS.TO.W.0061.000000T0000Z-100714T0830Z/
SIOUX ND-
228 AM MDT WED JUL 14 2010

...THE TORNADO WARNING FOR SOUTH CENTRAL SIOUX COUNTY WILL EXPIRE AT
330 AM CDT/230 AM MDT/...

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

LAT...LON 4594 10166 4602 10169 4603 10164 4601 10156
      4603 10154 4603 10151 4605 10149 4606 10128
      4594 10123
TIME...MOT...LOC 0828Z 270DEG 29KT 4596 10139

$$

AYD

What forecasters said that day

The local office's own words before this tornado 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 tornado warning went out at Jul 13, 2:27 PM CDT, 12 hours 31 minutes earlier.

Area forecast discussion, Jul 13, 2:27 PM CDT, 12 hours 31 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BISMARCK ND
227 PM CDT TUE JUL 13 2010

.SHORT TERM...TONIGHT THROUGH FRIDAY NIGHT...
THE SURFACE COLD FRONT HAS MOVED THROUGH MINOT AND
GARRISON...BUT AS THE MODELS ADVERTISED THE FRONT HAS STAGNATED
OVER THE BISMARCK AREA RESULTING IN A TILTED FRONT. THUNDERSTORMS
HAVE DEVELOPED BETWEEN BISMARCK AND JAMESTOWN. THE STORMS ARE
MOVING NORTHEAST...BUT THE LINE IS MOVING SLOWLY NORTH. GOOD CAPE
AND SHEAR INDICATE A POTENTIAL FOR SEVERE THUNDERSTORMS...AND
POSSIBLY TORNADOES. SURFACE DEWPOINTS AND A K INDEX OF 35 OR
BETTER ALSO POINT TOWARD THE POTENTIAL FOR HEAVY RAIN. MOST LIKELY
SOME STORMS WILL PROMPT A SMALL STREAM AND URBAN FLOOD
ADVISORY...BUT IF ANY TRAINING OCCURS...MAY NEED A FLASH FLOOD
WARNING. THERE IS ALSO CONVECTION IN NORTHEAST MONTANA WHICH IS
MOVING EAST...SO EVEN THOUGH THE DEWPOINTS AT WILLISTON AND
DICKINSON HAVE DROPPED TO LESS THAN 50 DEGREES...CONTINUE TO SEE
POTENTIAL FOR CONVECTION IN THE WEST TONIGHT. WEDNESDAY THE UPPER
LEVEL LOW WILL MOVE ACROSS SOUTHERN SASKATCHEWAN AND MANITOBA.
THIS IS FAVORABLE FOR STRONG WINDS...ALTHOUGH IT APPEARS AT THIS
TIME THAT THEY WILL REMAIN BELOW ADVISORY CRITERIA. AGAIN...THERE
IS SOME POTENTIAL FOR CONVECTION...MAINLY ACROSS THE NORTH AND FAR
EASTERN COUNTIES. RIDGING ALOFT BEHIND THE LOW WEDNESDAY NIGHT
THROUGH FRIDAY SHOULD LIMIT THE CHANCE OF PRECIPITATION.
TEMPERATURES WILL TREND DOWN ON WEDNESDAY...BUT SHOULD SEE A
RETURN TO WARMER TEMPERATURE THURSDAY AND FRIDAY.

.LONG TERM...SATURDAY THROUGH TUESDAY
THE UPPER LEVEL PATTERN CONTINUES TO ALLOW UPPER LEVEL SHORT
WAVES TO MOVE THROUGH THE AREA ALONG WITH THEIR ASSOCIATED SURFACE
LOWS. CONSEQUENTLY...THE LONG TERM FORECAST IS FOR OFF AND ON
CHANCES OF THUNDERSTORMS WITH SEASONAL TEMPERATURES.

&&
.AVIATION...THUNDERSTORMS...SOME SEVERE...CAN BE EXPECTED THIS
EVENING AS A SURFACE TROUGH MOVES FROM CENTRAL NORTH DAKOTA INTO
THE RED RIVER VALLEY. IN ADDITION THERE IS A CHANCE OF SHOWERS AND
THUNDERSTORMS BEHIND THE FRONT...ALTHOUGH WITH LOW SURFACE
DEWPOINTS...BASES SHOULD BE FAIRLY HIGH. WEDNESDAY THE THREAT OF
THUNDERSTORMS WILL CONTINUE ACROSS THE NORTH AND EAST. STRONG WEST
WINDS WITH STRONG GUSTS ARE LIKELY THROUGH THE AFTERNOON IN THE
WEST AND CENTRAL PARTS OF THE STATE.

&&

.BIS WATCHES/WARNINGS/ADVISORIES...
NONE.
&&

TSW

Hazardous weather outlook, Jul 13, 9:47 PM CDT, 5 hours 11 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE BISMARCK ND
947 PM CDT TUE JUL 13 2010

NDZ020-022-023-025-033>037-040>048-050-051-141100-
OLIVER-SHERIDAN-WELLS-FOSTER-STARK-MORTON-BURLEIGH-KIDDER-
STUTSMAN-SLOPE-HETTINGER-GRANT-BOWMAN-ADAMS-SIOUX-EMMONS-LOGAN-
LA MOURE-MCINTOSH-DICKEY-
947 PM CDT TUE JUL 13 2010 /847 PM MDT TUE JUL 13 2010/

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

.DAY ONE...TONIGHT

THUNDERSTORMS ARE EXPECTED TO DEVELOP OVERNIGHT AND MOVE ACROSS
MUCH OF SOUTHERN NORTH DAKOTA. SOME SEVERE STORMS ARE
POSSIBLE...WITH LARGE HAIL AND DAMAGING STRAIGHT LINE WINDS THE
MAIN THREATS. ISOLATED HEAVY RAINFALL IS POSSIBLE...BUT IS NOT
EXPECTED TO CAUSE A SIGNIFICANT THREAT OF FLASH FLOODING.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

A FEW THUNDERSTORMS ARE POSSIBLE MAINLY SATURDAY AND SATURDAY
NIGHT...BUT THE THREAT FOR SEVERE WEATHER IS LOW.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS POSSIBLE OVERNIGHT INTO EARLY WEDNESDAY MORNING.

NDZ001>005-009>013-017>019-021-031-032-141100-
DIVIDE-BURKE-RENVILLE-BOTTINEAU-ROLETTE-WILLIAMS-MOUNTRAIL-WARD-
MCHENRY-PIERCE-MCKENZIE-DUNN-MERCER-MCLEAN-GOLDEN VALLEY-BILLINGS-
947 PM CDT TUE JUL 13 2010 /847 PM MDT TUE JUL 13 2010/

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL THROUGH
NORTHWEST NORTH DAKOTA.

.DAY ONE...TONIGHT

ISOLATED THUNDERSTORMS ARE POSSIBLE OVERNIGHT. NO SEVERE WEATHER
IS EXPECTED...BUT A FEW STORMS MAY PRODUCE HAIL AROUND PENNY SIZE.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

A FEW THUNDERSTORMS ARE POSSIBLE MAINLY SATURDAY AND SATURDAY
NIGHT...BUT THE THREAT FOR SEVERE WEATHER IS LOW.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED.

KINNEY

In the hours before

Local storm report, Jul 14, 1:51 AM CDT, 1 hour 7 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BISMARCK ND
151 AM CDT WED JUL 14 2010

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

0145 AM     HAIL             FLASHER                 46.46N 101.23W
07/14/2010  E1.00 INCH       MORTON             ND   TRAINED SPOTTER

&&

SWICHE

Local storm report, Jul 14, 2:12 AM CDT, 46 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BISMARCK ND
212 AM CDT WED JUL 14 2010

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

0210 AM     HAIL             SOLEN                   46.39N 100.80W
07/14/2010  E4.25 INCH       SIOUX              ND   PUBLIC

&&

SWICHE

Local storm report, Jul 14, 2:19 AM CDT, 39 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BISMARCK ND
219 AM CDT WED JUL 14 2010

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

0103 AM     HAIL             ELGIN                   46.40N 101.85W
07/14/2010  E4.25 INCH       GRANT              ND   PUBLIC

            BROKE WINDOWS ALL OVER TOWN.

&&

SWICHE

Local storm report, Jul 14, 2:31 AM CDT, 27 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BISMARCK ND
231 AM CDT WED JUL 14 2010

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

1250 AM     HAIL             NEW LEIPZIG             46.37N 101.95W
07/14/2010  E2.75 INCH       GRANT              ND   PUBLIC

&&

SWICHE

Local storm report, Jul 14, 2:39 AM CDT, 19 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BISMARCK ND
239 AM CDT WED JUL 14 2010

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

0221 AM     HAIL             CANNON BALL             46.39N 100.59W
07/14/2010  E4.25 INCH       SIOUX              ND   PUBLIC

            BREAKING WINDOWS.

&&

SWICHE

Local storm report, Jul 14, 2:57 AM CDT, 1 minute before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BISMARCK ND
257 AM CDT WED JUL 14 2010

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

0243 AM     HAIL             1 S HAZELTON            46.47N 100.28W
07/14/2010  E1.50 INCH       EMMONS             ND   PUBLIC

0244 AM     HAIL             HAZELTON                46.48N 100.28W
07/14/2010  E1.75 INCH       EMMONS             ND   PUBLIC

            HAIL COVERED THE GROUND.

&&

SWICHE

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 13, 10:42 PM CDT	Severe Thunderstorm Warning	BIS	Grant, Hettinger, Stark	63 min
Jul 13, 10:57 PM CDT	Tornado Warning	BIS	Grant, Hettinger	33 min
Jul 13, 11:24 PM CDT	Severe Thunderstorm Warning	BIS	Adams, Hettinger, Slope, Stark	66 min
Jul 13, 11:29 PM CDT	Tornado Warning	BIS	Grant	31 min
Jul 13, 11:48 PM CDT	Areal Flood Advisory	BIS	Adams, Bowman, Hettinger, Slope	5 hr
Jul 13, 11:53 PM CDT	Severe Thunderstorm Warning	BIS	Adams, Bowman, Slope	37 min
Jul 13, 11:58 PM CDT	Severe Thunderstorm Warning	BIS	Grant, Hettinger, Morton, Stark	62 min
Jul 13, 11:59 PM CDT	Tornado Warning	BIS	Grant, Morton, Sioux	46 min
Jul 14, 12:07 AM CDT	Tornado Warning	BIS	Adams, Bowman, Hettinger, Slope	23 min
Jul 14, 12:10 AM CDT	Tornado Warning	BIS	Grant, Hettinger	35 min
Jul 14, 12:14 AM CDT	Severe Thunderstorm Warning	BIS	Bowman	16 min
Jul 14, 12:25 AM CDT	Flash Flood Warning	BIS	Adams, Bowman, Grant, Hettinger, Morton, Slope and 1 more	4 hr
Jul 14, 12:27 AM CDT	Tornado Warning	BIS	Adams, Hettinger	48 min
Jul 14, 12:29 AM CDT	Severe Thunderstorm Warning	BIS	Adams, Bowman, Hettinger, Slope	61 min
Jul 14, 12:36 AM CDT	Tornado Warning	BIS	Grant, Hettinger	39 min
Jul 14, 12:42 AM CDT	Tornado Warning	BIS	Emmons, Morton, Sioux	48 min
Jul 14, 12:44 AM CDT	Severe Thunderstorm Warning	BIS	Grant, Morton	61 min
Jul 14, 1:08 AM CDT	Tornado Warning	BIS	Grant, Morton	52 min
Jul 14, 1:14 AM CDT	Tornado Warning	BIS	Adams, Grant, Hettinger, Sioux	46 min
Jul 14, 1:19 AM CDT	Tornado Warning	BIS	Adams, Bowman	41 min
Jul 14, 1:25 AM CDT	Severe Thunderstorm Warning	BIS	Adams, Grant, Hettinger, Sioux	50 min
Jul 14, 1:27 AM CDT	Tornado Warning	BIS	Emmons, Logan, McIntosh	48 min
Jul 14, 1:45 AM CDT	Severe Thunderstorm Warning	BIS	Burleigh, Emmons, Morton	60 min
Jul 14, 1:49 AM CDT	Flash Flood Warning	BIS	Burleigh, Dickey, Emmons, Grant, Kidder, LaMoure and 6 more	6 hr
Jul 14, 1:52 AM CDT	Tornado Warning	BIS	Emmons, Morton, Sioux	23 min
Jul 14, 1:52 AM CDT	Tornado Warning	BIS	Grant	23 min
Jul 14, 2:00 AM CDT	Severe Thunderstorm Warning	BIS	Adams, Grant, Hettinger, Sioux	45 min
Jul 14, 2:10 AM CDT	Tornado Warning	BIS	Grant, Morton, Sioux	35 min
Jul 14, 2:13 AM CDT	Tornado Warning	BIS	Dickey, LaMoure, Logan, McIntosh	32 min
Jul 14, 2:15 AM CDT	Tornado Warning	BIS	Emmons, Morton, Sioux	30 min
Jul 14, 2:27 AM CDT	Severe Thunderstorm Warning	BIS	LaMoure, Logan, Stutsman	48 min
Jul 14, 2:34 AM CDT	Tornado Warning	BIS	Emmons, Logan, McIntosh	41 min
Jul 14, 2:40 AM CDT	Tornado Warning	BIS	Dickey, LaMoure, Logan, McIntosh	65 min
Jul 14, 2:42 AM CDT	Severe Thunderstorm Warning	BIS	Emmons, Grant, Morton, Sioux	63 min
Jul 14, 2:44 AM CDT	Severe Thunderstorm Warning	BIS	Adams, Grant, Hettinger, Morton, Sioux	61 min
Jul 14, 3:14 AM CDT	Severe Thunderstorm Warning	BIS	LaMoure, Stutsman	31 min
Jul 14, 3:16 AM CDT	Tornado Warning	BIS	LaMoure, Logan	34 min
Jul 14, 3:34 AM CDT	Severe Thunderstorm Warning	BIS	Emmons, Kidder, Logan	41 min
Jul 14, 3:43 AM CDT	Severe Thunderstorm Warning	BIS	LaMoure, Logan, Stutsman	47 min
Jul 14, 4:06 AM CDT	Severe Thunderstorm Warning	BIS	Kidder, LaMoure, Logan, Stutsman	54 min
Jul 14, 4:24 AM CDT	Severe Thunderstorm Warning	BIS	Dickey, LaMoure	51 min
Jul 14, 4:28 AM CDT	Tornado Warning	BIS	Emmons, Sioux	32 min

Nearby

Tornado Warnings in North Dakota, 2010 Every tornado warning in 2010 Tornadoes in 2010

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.