Alert archive / North Dakota / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 164, NWS Bismarck, ND

July 22, 20116 counties in North Dakota

NWS Bismarck, ND issued this severe thunderstorm warning at Jul 22, 2011, 8:22 PM MDT for 6 counties in North Dakota. It was in force for 53 min. 4 reports 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 22, 2011, 8:22 PM MDT (02:22 UTC)
Expired: Jul 22, 2011, 9:15 PM MDT
In force: 53 min
Issued by: NWS Bismarck, ND
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Dunn County, ND, McLean County, ND, Mercer County, ND, Mountrail County, ND, Oliver County, ND, Ward County, ND

What was reported inside it

Time	Report	Where	Remark
Jul 22, 8:30 PM MDT	HAIL 1.25	Zap, ND	HAIL UP TO THE SIZE OF HALF DOLLARS...WITH HEAVY RAIN
Jul 22, 8:31 PM MDT	HAIL 0.25	10 Ne Halliday, ND
Jul 22, 8:40 PM MDT	TSTM WND GST 60	11 N Zap, ND	REPORTED BY ND ATMOSPHERIC RESOURCE BOARD OBSERVER.
Jul 22, 8:40 PM MDT	HAIL 1.25	11 N Zap, ND	ND ATMOSPHERIC RESOURCE BOARD OBSERVER REPORTS 1.25 INCH HAIL WITH STRONG WINDS.

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 3 storm reports to this severe thunderstorm warning; the first came 8 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 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, 2.4 hours before the alert went out and 169 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.

624 
WUUS53 KBIS 230222
SVRBIS
NDC025-055-057-061-065-101-230315-
/O.NEW.KBIS.SV.W.0164.110723T0222Z-110723T0315Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BISMARCK ND
922 PM CDT FRI JUL 22 2011

THE NATIONAL WEATHER SERVICE IN BISMARCK HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHEASTERN DUNN COUNTY IN SOUTHWEST NORTH DAKOTA...
  WESTERN MCLEAN COUNTY IN SOUTH CENTRAL NORTH DAKOTA...
  MERCER COUNTY IN SOUTH CENTRAL NORTH DAKOTA...
  SOUTHERN MOUNTRAIL COUNTY IN NORTHWEST NORTH DAKOTA...
  NORTHWESTERN OLIVER COUNTY IN SOUTH CENTRAL NORTH DAKOTA...
  SOUTH CENTRAL WARD COUNTY IN NORTH CENTRAL NORTH DAKOTA...

* UNTIL 1015 PM CDT/915 PM MDT/

* AT 917 PM CDT/817 PM MDT/...NATIONAL WEATHER SERVICE DOPPLER RADAR
  INDICATED A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING
  QUARTER SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THESE
  STORMS WERE LOCATED ALONG A LINE EXTENDING FROM NEW TOWN TO INDIAN
  HILLS RECREATION AREA TO DODGE...AND MOVING EAST AT 40 MPH.

* LOCATIONS IMPACTED INCLUDE...
  INDIAN HILLS RECREATION AREA...GOLDEN VALLEY...PARSHALL BAY
  RECREATION AREA...RAUB...ZAP...PARSHALL...WHITE SHIELD...DAKOTA
  WATERS RECREATION AREA...BEULAH...BEULAH BAY RECREATION AREA...
  ROSEGLEN...PLAZA...EMMET...HAZEN BAY RECREATION AREA...HAZEN...
  MAKOTI...RYDER...LAKE SAKAKAWEA STATE PARK...PICK CITY AND FORT
  STEVENSON STATE PARK.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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

&&

A TORNADO WATCH REMAINS IN EFFECT UNTIL 200 AM CDT SATURDAY
MORNING/100 AM MDT SATURDAY MORNING/ FOR NORTH DAKOTA. A TORNADO
WATCH ALSO REMAINS IN EFFECT UNTIL 200 AM CDT SATURDAY MORNING/100 AM
MDT SATURDAY MORNING/ FOR SOUTHEAST NORTH DAKOTA.

LAT...LON 4812 10145 4763 10108 4720 10109 4720 10243
      4759 10244 4788 10266 4800 10256 4804 10261
      4805 10267 4809 10268 4809 10275 4812 10273
      4813 10277
TIME...MOT...LOC 0222Z 267DEG 35KT 4803 10244 4761 10212
          4726 10212
WIND...HAIL 60MPH 1.00IN

$$

TM/AYD

1 follow-up statement

323 
WWUS53 KBIS 230254
SVSBIS

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BISMARCK ND
954 PM CDT FRI JUL 22 2011

NDC025-055-057-061-065-101-230315-
/O.CON.KBIS.SV.W.0164.000000T0000Z-110723T0315Z/
MCLEAN ND-MERCER ND-MOUNTRAIL ND-OLIVER ND-WARD ND-DUNN ND-
954 PM CDT FRI JUL 22 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHEASTERN
DUNN...SOUTH CENTRAL WARD...NORTHWESTERN OLIVER...SOUTHEASTERN
MOUNTRAIL...MERCER AND WESTERN MCLEAN COUNTIES UNTIL 1015 PM CDT/915
PM MDT/...

AT 952 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER SIZE
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THESE STORMS WERE
LOCATED ALONG A LINE EXTENDING FROM PLAZA TO EMMET TO HAZEN...MOVING
EAST AT 40 MPH.

LOCATIONS IMPACTED INCLUDE...
  PLAZA...EMMET...HAZEN BAY RECREATION AREA...HAZEN...MAKOTI...
  RYDER...LAKE SAKAKAWEA STATE PARK...PICK CITY...FORT STEVENSON
  STATE PARK...GARRISON...STANTON...RIVERDALE...DOUGLAS...RICE
  LAKE...FORT CLARK...COLEHARBOR...MAX...UNDERWOOD AND FALKIRK.

AT 930 PM CDT...HALF DOLLAR SIZE HAIL WAS REPORTED IN ZAP WITH THESE 
STORMS. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WATCH REMAINS IN EFFECT FOR THE WARNED AREA. TORNADOES CAN 
DEVELOP QUICKLY FROM SEVERE THUNDERSTORMS. 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.

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

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

&&

LAT...LON 4722 10224 4760 10224 4790 10245 4811 10258
      4812 10145 4763 10108 4720 10109
TIME...MOT...LOC 0253Z 267DEG 35KT 4805 10199 4763 10167
          4728 10167
WIND...HAIL 60MPH 1.00IN

$$

MERRIMAN/AYD

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 22, 6:18 PM MDT, 2 hours 4 minutes earlier.

Area forecast discussion, Jul 22, 6:18 PM MDT, 2 hours 4 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BISMARCK ND
718 PM CDT FRI JUL 22 2011

.UPDATE...
TORNADO WATCHES 673 AND 674 ARE IN EFFECT FOR LARGE PARTS OF THE
COUNTY WARNING AREA UNTIL 2 AM CDT SATURDAY. SEE PRODUCT BISWCNBIS
REDEFINING STATEMENT FOR DETAILS.

&&

.DISCUSSION...
ISOLATED SEVERE THUNDERSTORMS HAVE DEVELOPED OVER WESTERN NORTH
DAKOTA. A LINE OF SEVERE STORMS IN EASTERN MONTANA WAS ADVANCING
TOWARD THE NORTH DAKOTA BORDER WITH WINDS 65 TO 75 MPH REPORTED
THROUGH EASTERN MONTANA.

THUNDERSTORM CHANCES ARE VERY HIGH THIS EVENING WEST...INCREASING
CENTRAL AFTER 9 PM CDT.

&&
.AVIATION...
TAFS REFLECT TIMING OF EXPECTED STORMS. AVIATION INTERESTS NEED
TO BE AWARE THAT THERE WILL BE SEVERE STORMS THIS EVENING AND
POSSIBLY OVERNIGHT...SPREADING WEST TO EAST. STORMS WILL BE
CAPABLE OF PRODUCING HIGH WINDS...LARGE HAIL...VERY HEAVY
RAIN...AND TORNADOES.

&&

.BIS WATCHES/WARNINGS/ADVISORIES...
FLASH FLOOD WATCH FROM 1 AM CDT SATURDAY THROUGH SATURDAY
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/ SATURDAY FOR NDZ001-
009-017-018-031>034-040>046.

&&

JP MARTIN

Hazardous weather outlook, Jul 22, 3:41 AM MDT, 16 hours 41 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

Local storm report, Jul 22, 7:41 PM MDT, 41 minutes before

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

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

0839 PM     TSTM WND GST     KILLDEER                47.37N 102.75W
07/22/2011  M59 MPH          DUNN               ND   CO-OP OBSERVER

&&

LHUBER

Local storm report, Jul 22, 7:45 PM MDT, 37 minutes before

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

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

0835 PM     TORNADO          BELFIELD                46.89N 103.20W
07/22/2011                   STARK              ND   TRAINED SPOTTER

            TRAINED WEATHER SPOTTER REPORTED DEBRIS ON THE SOUTH SIDE
            OF CITY...NO VISIBLE FUNNEL...

&&

LHUBER

Local storm report, Jul 22, 8:02 PM MDT, 20 minutes before

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

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

0846 PM     HEAVY RAIN       6 N KILLDEER            47.46N 102.75W
07/22/2011  M1.50 INCH       DUNN               ND   TRAINED SPOTTER

            45 MINUTE STORM TOTAL.

&&

LHUBER

Local storm report, Jul 22, 8:17 PM MDT, 5 minutes before

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

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

0912 PM     HEAVY RAIN       12 NW HALLIDAY          47.48N 102.52W
07/22/2011  E1.24 INCH       DUNN               ND   TRAINED SPOTTER

            FELL WITHIN LAST 25 MINUTES.

&&

LHUBER

Local storm report, Jul 22, 8:20 PM MDT, 2 minutes before

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

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

0912 PM     HAIL             RHAME                   46.23N 103.65W
07/22/2011  M0.75 INCH       BOWMAN             ND   MESONET

            ND ATMOSPHERIC RESOURCE BOARD OBSERVER REPORTED PENNY
            SIZED HAIL...

&&

LHUBER

Local storm report, Jul 22, 8:21 PM MDT, 1 minute before

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

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

0830 PM     HEAVY RAIN       GRASSY BUTTE            47.39N 103.25W
07/22/2011  M1.13 INCH       MCKENZIE           ND   CO-OP OBSERVER

            FELL IN A HALF HOUR. PEA SIZE HAIL.

&&

LHUBER

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, 8:33 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, 12:15 AM MDT	Severe Thunderstorm Warning	BIS	Adams, Hettinger	60 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive.