Alert archive / North Dakota / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 176, NWS Bismarck, ND

July 23, 2011Adams County, Hettinger County, North Dakota

NWS Bismarck, ND issued this severe thunderstorm warning at Jul 23, 2011, 12:15 AM MDT for Adams County, Hettinger County, North Dakota. It was in force for 60 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 23, 2011, 12:15 AM MDT (06:15 UTC)
Expired: Jul 23, 2011, 1:15 AM MDT
In force: 60 min
Issued by: NWS Bismarck, ND
Area: Storm-based polygon
Hail: 1.5 in
Wind: 50.0 mph

Counties Adams County, ND, Hettinger County, ND

The radar

The Bismarck radar (KBIS), 139 km from the middle of the area, began a volume at 06:17 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
Jul 22, 4:35 PM MDT	Tornado Watch	SPC	8 hr

The nearest sounding before it

Bismarck Municip, ND (KBIS), launched 00:00Z, 6.3 hours before the alert went out and 142 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: 1986 J/kg
Mixed-layer CIN: -16 J/kg
Mixed-layer LCL: 1048 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: 97 m²/s²
0-3 km storm-relative helicity: 219 m²/s²
Significant tornado parameter: 1.4
Supercell composite: 7.2

Open this sounding in Storm Lab

The text

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

063 
WUUS53 KBIS 230615
SVRBIS
NDC001-041-230715-
/O.NEW.KBIS.SV.W.0176.110723T0615Z-110723T0715Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BISMARCK ND
1215 AM MDT SAT JUL 23 2011

THE NATIONAL WEATHER SERVICE IN BISMARCK HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EASTERN ADAMS COUNTY IN SOUTHWEST NORTH DAKOTA...
  SOUTHEASTERN HETTINGER COUNTY IN SOUTHWEST NORTH DAKOTA...

* UNTIL 115 AM MDT

* AT 1212 AM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING PING PONG BALL SIZE HAIL. 
  THIS STORM WAS LOCATED 5 MILES NORTH OF HAYNES...OR 16 MILES
  NORTHWEST OF LEMMON...AND MOVING NORTHEAST AT 30 MPH.

* LOCATIONS IMPACTED INCLUDE...
  MOTT...BURT AND BENTLEY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

A TORNADO WATCH REMAINS IN EFFECT UNTIL 100 AM MDT SATURDAY MORNING
FOR SOUTHERN NORTH DAKOTA. A TORNADO WATCH ALSO REMAINS IN EFFECT
UNTIL 100 AM MDT SATURDAY MORNING FOR SOUTHEAST NORTH DAKOTA.

LAT...LON 4594 10282 4595 10283 4646 10225 4637 10204
      4629 10204 4628 10200 4601 10199 4593 10201
TIME...MOT...LOC 0614Z 228DEG 26KT 4606 10244
WIND...HAIL <50MPH 1.50IN

$$

TH/TM

2 follow-up statements

606 
WWUS53 KBIS 230634
SVSBIS

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BISMARCK ND
134 AM CDT SAT JUL 23 2011

NDC001-041-230715-
/O.CON.KBIS.SV.W.0176.000000T0000Z-110723T0715Z/
ADAMS ND-HETTINGER ND-
1234 AM MDT SAT JUL 23 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHEASTERN
HETTINGER AND EASTERN ADAMS COUNTIES UNTIL 115 AM MDT...

AT 1231 AM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL.  THIS 
STORM WAS LOCATED 13 MILES NORTH OF LEMMON...MOVING NORTHEAST AT 35 
MPH.

ANOTHER SEVERE THUNDERSTORM WAS LOCATED ABOUT 5 MILES SOUTH OF 
HAYNES...MOVING NORTHEAST AT 35 MPH. THIS STORM IS CAPABLE OF 
PRODUCING QUARTER SIZE HAIL.

LOCATIONS IMPACTED INCLUDE...
  RURAL EASTERN ADAMS AND HETTINGER COUNTIES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WATCH REMAINS IN EFFECT FOR THE WARNED AREA. TORNADOES CAN
DEVELOP QUICKLY FROM SEVERE THUNDERSTORMS. ALTHOUGH NOT IMMEDIATELY
LIKELY...IF A TORNADO IS SPOTTED ACT QUICKLY AND MOVE TO A PLACE OF
SAFETY INSIDE A STURDY STRUCTURE...SUCH AS A BASEMENT OR SMALL
INTERIOR ROOM.

IF YOU ARE IN THE PATH OF THIS STORM...PREPARE IMMEDIATELY FOR LARGE
HAIL AND DEADLY CLOUD TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE
TO A SHELTER...PREFERABLY INSIDE A STRONG BUILDING AND AWAY FROM
WINDOWS.

&&

LAT...LON 4594 10282 4595 10283 4646 10225 4637 10204
      4629 10204 4628 10200 4601 10199 4593 10201
TIME...MOT...LOC 0632Z 238DEG 32KT 4613 10223
WIND...HAIL <50MPH 1.00IN

$$

TH/TM

418 
WWUS53 KBIS 230711
SVSBIS

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BISMARCK ND
211 AM CDT SAT JUL 23 2011

NDC001-041-230721-
/O.EXP.KBIS.SV.W.0176.000000T0000Z-110723T0715Z/
ADAMS ND-HETTINGER ND-
111 AM MDT SAT JUL 23 2011

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN HETTINGER AND
EASTERN ADAMS COUNTIES WILL EXPIRE AT 215 AM CDT/115 AM MDT/...

THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED AND MOVED OUT OF
THE WARNED AREA.  HOWEVER HEAVY RAIN IS STILL POSSIBLE WITH THIS
THUNDERSTORM.

LAT...LON 4594 10282 4595 10283 4646 10225 4637 10204
      4629 10204 4628 10200 4601 10199 4593 10201
TIME...MOT...LOC 0711Z 238DEG 32KT 4631 10180

$$

TH/TM

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 23, 12:14 AM MDT, 1 minute earlier.

Area forecast discussion, Jul 23, 12:14 AM MDT, 1 minute before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BISMARCK ND
114 AM CDT SAT JUL 23 2011

.UPDATE...
FORECAST UPDATED TO REMOVE SOME COUNTIES FROM TORNADO WATCH 673
AND SEVERE THUNDERSTORM WATCH 675.

&&

.DISCUSSION...
LINE OF SEVERE THUNDERSTORMS CROSSING THROUGH THE EASTERN END OF
THE COUNTY WARNING AREA WITH WARNINGS CONTINUING. OTHER STORMS
FROM NORTHWEST SOUTH DAKOTA HAVE MOVED INTO THE SOUTHWEST PART OF
NORTH DAKOTA AND ARE PROGRESSING NORTHEAST. THEY SHOULD PASS SOUTH
OF DICKINSON...AND MOVE TOWARD BISMARCK AND MANDAN.

&&

.AVIATION...
HIGH RISK OF THUNDERSTORMS...LIKELY SEVERE...AT THE KJMS TAF SITE
THROUGH 08Z. OTHER STORMS LIKELY AT KBIS TO BE BELOW SEVERE
LIMITS. AREAS OF LOW CEILINGS ARE FORECAST TO DEVELOP ACROSS THE
AREA WITH MVFR CIGS LIKELY...POSSIBLY INTO THE IFR CATEGORY.

&&

.BIS WATCHES/WARNINGS/ADVISORIES...
FLASH FLOOD WATCH UNTIL 1 PM CDT THIS AFTERNOON FOR NDZ002>005-
010>013-019>023-025-035>037-047-048-050-051.

FLASH FLOOD WATCH UNTIL 7 AM CDT /6 AM MDT/ THIS MORNING FOR
NDZ001-009-017-018-031>034-040>046.

HIGH WIND WARNING UNTIL 4 AM CDT EARLY THIS MORNING FOR
NDZ001>003-009>011-017-018.

&&

JP MARTIN

Hazardous weather outlook, Jul 22, 3:41 AM MDT, 20 hours 34 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE BISMARCK ND
441 AM CDT FRI JUL 22 2011

NDZ001>005-009>013-017>023-025-031>037-040>048-050-051-230945-
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-
441 AM CDT FRI JUL 22 2011 /341 AM MDT FRI JUL 22 2011/

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...TODAY AND TONIGHT

SEVERE THUNDERSTORMS ARE EXPECTED TO INITIATE ACROSS WESTERN AND
FAR SOUTH CENTRAL NORTH DAKOTA LATE FRIDAY AFTERNOON. VERY LARGE
HAIL IN EXCESS OF TWO INCHES IN DIAMETER...DAMAGING WINDS IN
EXCESS OF 60 MPH AND A TORNADO OR TWO MAY BE POSSIBLE WITH THESE
STORMS...IN ADDITION TO HEAVY RAINFALL.

THUNDERSTORM COVERAGE IS EXPECTED TO INCREASE ACROSS THE WEST AND
CENTRAL FRIDAY NIGHT INTO SATURDAY MORNING...WITH THE PRIMARY
THREATS TRANSITIONING TO DAMAGING WINDS AND POTENTIAL FLASH
FLOODING. WHILE LOCATIONS THAT HAVE RECEIVED SIGNIFICANT RAINFALL
OVER THE PAST WEEK ARE MOST SUSCEPTIBLE TO FLASH FLOODING...THE
THREAT OF MANY AREAS BEING IMPACTED BY MULTIPLE THUNDERSTORMS WITH
RAINFALL RATES OF ONE TO TWO INCHES PER HOUR SUGGEST FLASH
FLOODING MAY BE POSSIBLE ACROSS ALL OF WESTERN AND CENTRAL NORTH
DAKOTA FRIDAY EVENING INTO SATURDAY MORNING. A FLASH FLOOD WATCH
HAS BEEN ISSUED FOR ALL OF WESTERN AND CENTRAL NORTH DAKOTA FOR FRIDAY
EVENING AND NIGHT INTO SATURDAY MORNING.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY

THUNDERSTORMS...SOME STRONG WITH HEAVY RAINFALL...ARE LIKELY
ACROSS CENTRAL NORTH DAKOTA THROUGH SATURDAY AFTERNOON.

AN ACTIVE WEATHER PATTERN IS FORECAST TO RETURN TO WESTERN AND
CENTRAL NORTH DAKOTA MONDAY NIGHT INTO THURSDAY...WITH MULTIPLE
ROUNDS OF THUNDERSTORMS POSSIBLE DURING THIS TIME FRAME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL LIKELY BE NEEDED LATE FRIDAY AFTERNOON
INTO SATURDAY MORNING.

AYD

In the hours before

Special weather statement, Jul 22, 10:28 PM MDT, 1 hour 47 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BISMARCK ND
1128 PM CDT FRI JUL 22 2011

NDZ001>003-009>011-017-230630-
DIVIDE-BURKE-RENVILLE-WILLIAMS-MOUNTRAIL-WARD-MCKENZIE-
INCLUDING THE CITIES OF...CROSBY...BOWBELLS...MOHALL...
WILLISTON...NEW TOWN...MINOT...WATFORD CITY
1128 PM CDT FRI JUL 22 2011

...GUSTY WINDS WERE OCCURRING OVER NORTHWEST NORTH DAKOTA BEHIND
THUNDERSTORMS...

WIND SPEEDS OF 35 TO 50 MPH SHOULD BE EXPECTED OVER NORTHWEST
NORTH DAKOTA THROUGH 130 AM CDT. THIS GUSTY WIND WAS OCCURRING FAR
BEHIND A LINE OF THUNDERSTORMS THAT WAS MOVING THROUGH THE MINOT
AREA.

JP MARTIN

Local storm report, Jul 22, 10:38 PM MDT, 1 hour 37 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BISMARCK ND
1138 PM CDT FRI JUL 22 2011

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

0940 PM     TSTM WND GST     11 N ZAP                47.45N 101.92W
07/22/2011  E60 MPH          MERCER             ND   MESONET

            REPORTED BY ND ATMOSPHERIC RESOURCE BOARD OBSERVER.

&&

LHUBER

Local storm report, Jul 22, 10:45 PM MDT, 1 hour 30 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BISMARCK ND
1145 PM CDT FRI JUL 22 2011

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

1101 PM     NON-TSTM WND DMG 2 S BISMARCK            46.78N 100.79W
07/22/2011                   BURLEIGH           ND   TRAINED SPOTTER

            LARGE BRANCHES DOWN...ESTIMATED 60 TO 65 MPH. ALSO ONE
            HALF INCH HAIL.

&&

LHUBER

Local storm report, Jul 22, 10:49 PM MDT, 1 hour 26 minutes before

PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE BISMARCK ND
1149 PM CDT FRI JUL 22 2011

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

1101 PM     TSTM WND DMG     2 S BISMARCK            46.78N 100.79W
07/22/2011                   BURLEIGH           ND   TRAINED SPOTTER

            LARGE BRANCHES DOWN...ESTIMATED 60 TO 65 MPH. ALSO ONE
            HALF INCH HAIL.

&&

LHUBER

Special weather statement, Jul 22, 11:35 PM MDT, 40 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BISMARCK ND
1235 AM CDT SAT JUL 23 2011

NDZ023-025-230615-
FOSTER ND-WELLS ND-
1235 AM CDT SAT JUL 23 2011

...SPECIAL WEATHER STATEMENT FOR SOUTHEASTERN WELLS AND WESTERN
FOSTER COUNTIES UNTIL 115 AM CDT...

AT 1231 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING
A LINE OF STRONG THUNDERSTORMS 25 MILES SOUTHWEST OF NEW
ROCKFORD...OR 55 MILES SOUTHWEST OF DEVILS LAKE...MOVING EAST AT 30
MPH.

HAIL UP TO ONE-HALF INCH IN DIAMETER AND WIND GUSTS UP TO 50 MPH ARE
EXPECTED WITH THESE STORMS...ALONG WITH HEAVY RAIN.

LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE...
  EMRICK...
  SYKESTON...
  CATHAY...
  CARRINGTON...
  MELVILLE...
  BARLOW...
  BORDULAC...

THESE STORMS MAY INTENSIFY...SO BE CERTAIN TO MONITOR LOCAL RADIO
AND TV STATIONS...AS WELL AS LOCAL CABLE TV OUTLETS... FOR
ADDITIONAL INFORMATION AND POSSIBLE WARNINGS FROM THE NATIONAL
WEATHER SERVICE.

TORRENTIAL RAIN...WHICH MAY FLOOD LOW LYING AREAS SUCH AS DITCHES AND
UNDERPASSES...IS ALSO LIKELY. DO NOT DRIVE YOUR VEHICLE ON A FLOODED
ROADWAY.

TH/TM

Local storm report, Jul 22, 11:55 PM MDT, 20 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BISMARCK ND
1255 AM CDT SAT JUL 23 2011

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

1240 AM     TSTM WND GST     10 N ZEELAND            46.11N 99.83W
07/23/2011  E80 MPH          MCINTOSH           ND   PUBLIC

            WINDS GUSTED FOR ABOUT 3 TO 5 MINUTES

&&

JJT/JM

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 22, 6:15 PM MDT	Severe Thunderstorm Warning	BIS	Billings, Bowman, Golden Valley, Slope	60 min
Jul 22, 6:40 PM MDT	Severe Thunderstorm Warning	BIS	Billings, Dunn, Golden Valley, McKenzie, Williams	65 min
Jul 22, 6:48 PM MDT	Flash Flood Warning	BIS	Dunn, McKenzie	6 hr
Jul 22, 7:04 PM MDT	Flash Flood Warning	BIS	Billings, Dunn, Golden Valley, McKenzie, Stark	6 hr
Jul 22, 7:06 PM MDT	Tornado Warning	BIS	Dunn, McKenzie	39 min
Jul 22, 7:10 PM MDT	Severe Thunderstorm Warning	BIS	Billings, Dunn, Golden Valley, Stark	65 min
Jul 22, 7:15 PM MDT	Severe Thunderstorm Warning	BIS	Adams, Bowman, Hettinger, Slope	60 min
Jul 22, 7:18 PM MDT	Tornado Warning	BIS	Billings, Stark	27 min
Jul 22, 7:32 PM MDT	Severe Thunderstorm Warning	BIS	Billings, Dunn, McKenzie, McLean, Mercer, Mountrail	58 min
Jul 22, 7:41 PM MDT	Tornado Warning	BIS	Billings, Stark	34 min
Jul 22, 7:49 PM MDT	Flash Flood Warning	BIS	Dunn, McLean, Mercer, Mountrail	6 hr
Jul 22, 7:55 PM MDT	Tornado Warning	BIS	Dunn	35 min
Jul 22, 8:08 PM MDT	Tornado Warning	BIS	Hettinger, Slope, Stark	37 min
Jul 22, 8:13 PM MDT	Severe Thunderstorm Warning	BIS	Dunn, Mercer, Morton, Oliver, Stark	62 min
Jul 22, 8:15 PM MDT	Severe Thunderstorm Warning	BIS	Adams, Bowman, Grant, Hettinger	60 min
Jul 22, 8:22 PM MDT	Severe Thunderstorm Warning	BIS	Dunn, McLean, Mercer, Mountrail, Oliver, Ward	53 min
Jul 22, 8:33 PM MDT	Tornado Warning	BIS	Hettinger, Slope	27 min
Jul 22, 8:51 PM MDT	Tornado Warning	BIS	McLean, Mercer	24 min
Jul 22, 8:56 PM MDT	Tornado Warning	BIS	Adams, Grant, Hettinger	34 min
Jul 22, 9:00 PM MDT	Tornado Warning	BIS	Morton, Oliver	30 min
Jul 22, 9:12 PM MDT	Severe Thunderstorm Warning	BIS	Burleigh, Morton, Oliver	63 min
Jul 22, 9:14 PM MDT	Severe Thunderstorm Warning	BIS	Burleigh, McLean, Mercer, Oliver, Sheridan	61 min
Jul 22, 9:16 PM MDT	Severe Thunderstorm Warning	BIS	Adams, Burleigh, Emmons, Grant, Hettinger, Morton and 1 more	59 min
Jul 22, 9:25 PM MDT	Tornado Warning	BIS	Adams, Grant, Hettinger, Sioux	35 min
Jul 22, 9:27 PM MDT	Tornado Warning	BIS	Burleigh, Morton, Oliver	33 min
Jul 22, 9:51 PM MDT	Tornado Warning	BIS	Burleigh, Emmons, Morton, Sioux	24 min
Jul 22, 10:02 PM MDT	Tornado Warning	BIS	Adams, Sioux	13 min
Jul 22, 10:07 PM MDT	Severe Thunderstorm Warning	BIS	Burleigh, Foster, Kidder, Morton, Sheridan, Stutsman and 1 more	68 min
Jul 22, 10:08 PM MDT	Severe Thunderstorm Warning	BIS	McLean, Oliver, Sheridan, Wells	67 min
Jul 22, 10:11 PM MDT	Severe Thunderstorm Warning	BIS	Adams, Emmons, Grant, Logan, Morton, Sioux	64 min
Jul 22, 10:55 PM MDT	High Wind Warning	BIS	Burke, Divide, Dunn, McKenzie, Mountrail, Renville and 1 more	3 hr
Jul 22, 10:59 PM MDT	Areal Flood Advisory	BIS	Dickey, Foster, Kidder, LaMoure, Logan, McIntosh and 2 more	6 hr
Jul 22, 11:08 PM MDT	Severe Thunderstorm Warning	BIS	Dickey, Emmons, LaMoure, Logan, McIntosh, Sioux	52 min
Jul 22, 11:14 PM MDT	Flash Flood Warning	BIS	Foster, Kidder, Stutsman, Wells	6 hr
Jul 22, 11:16 PM MDT	Severe Thunderstorm Warning	BIS	Kidder, Stutsman	59 min
Jul 22, 11:21 PM MDT	Severe Thunderstorm Warning	BIS	Adams, Bowman, Hettinger	54 min
Jul 22, 11:57 PM MDT	Severe Thunderstorm Warning	BIS	Dickey, Kidder, LaMoure, Logan, McIntosh	63 min
Jul 23, 12:09 AM MDT	Severe Thunderstorm Warning	BIS	Stutsman	66 min
Jul 23, 12:28 AM MDT	Areal Flood Advisory	BIS	Adams, Hettinger	4 hr
Jul 23, 12:55 AM MDT	Severe Thunderstorm Warning	BIS	Dickey, LaMoure	50 min
Jul 23, 1:01 AM MDT	Areal Flood Warning	BIS	Dunn, McKenzie	12 hr
Jul 23, 2:04 AM MDT	Wind Advisory	BIS	Bottineau, Burke, Burleigh, Dickey, Emmons, Foster and 15 more	4 hr
Jul 23, 5:01 AM MDT	Areal Flood Warning	BIS	Foster, Kidder, Stutsman, Wells	8 hr

Nearby

Severe Thunderstorm Warnings in North Dakota, 2011 Every severe thunderstorm warning in 2011

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.