Alert archive / North Dakota / Flash Flood Warnings in 2011

Flash Flood Warning 1, NWS Bismarck, ND

May 30, 2011Ward County, North Dakota

NWS Bismarck, ND issued this flash flood warning at May 30, 2011, 4:03 PM CDT for Ward County, North Dakota. It was in force for 3 hr. 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 30, 2011, 4:03 PM CDT (21:03 UTC)
Expired
May 30, 2011, 7:00 PM CDT
In force
3 hr
Issued by
NWS Bismarck, ND
Area
Storm-based polygon
Flood severity
None

County Ward County, ND

The nearest sounding before it

Bismarck Municip, ND (KBIS), launched 12:00Z, 9.1 hours before the alert went out and 164 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-pSkew-T log-p diagram, Bismarck Municip, ND at 12:00Z on 2011-05-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Bismarck Municip, ND at 12:00Z on 2011-05-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 383 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
625 m above ground
0-6 km bulk shear
69 kt
0-1 km storm-relative helicity
383 m²/s²
0-3 km storm-relative helicity
991 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.6

Open this sounding in Storm Lab

The text

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

831 
WGUS53 KBIS 302103
FFWBIS
NDC101-310000-
/O.NEW.KBIS.FF.W.0001.110530T2103Z-110531T0000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE BISMARCK ND
403 PM CDT MON MAY 30 2011

THE NATIONAL WEATHER SERVICE IN BISMARCK HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SOUTHEASTERN WARD COUNTY IN NORTH CENTRAL NORTH DAKOTA...

* UNTIL 700 PM CDT

* AT 400 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  A CONTINUOUS LINE OF THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS 
  THE WARNED AREA. ADDITIONAL RAINFALL UP TO ONE INCH...COMBINED 
  WITH PREVIOUS RAINFALL NEAR ONE INCH...WILL RESULT IN FLASH 
  FLOODING.

* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
  OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  MINOT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

ADDITIONAL RAINFALL AMOUNTS AROUND ONE INCH IS POSSIBLE IN THE 
WARNED AREA.

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...HIGHWAYS AND UNDERPASSES. ADDITIONALLY...
COUNTRY ROADS AND FARMLANDS ALONG THE BANKS OF CREEKS...STREAMS AND
OTHER LOW LYING AREAS ARE SUBJECT TO FLOODING.

DO NOT ATTEMPT TO CROSS WATER COVERED BRIDGES...DIPS...OR LOW WATER 
CROSSINGS. NEVER TRY TO CROSS A FLOWING STREAM... EVEN A SMALL 
ONE...ON FOOT OR IN A VEHICLE.

&&

LAT...LON 4846 10107 4817 10107 4785 10114 4785 10157
      4845 10140

$$

HEINERT
2 follow-up statements
836 
WGUS73 KBIS 302214
FFSBIS

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE BISMARCK ND
514 PM CDT MON MAY 30 2011

NDC101-310000-
/O.CON.KBIS.FF.W.0001.000000T0000Z-110531T0000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
WARD ND-
514 PM CDT MON MAY 30 2011

...FLASH FLOOD WARNING REMAINS IN EFFECT FOR CENTRAL WARD COUNTY
UNTIL 700 PM CDT...

THIS INCLUDES THE CITY OF MINOT AND THE MINOT AIR FORCE BASE.

AT 513 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
INDICATE SHOWERS AND EMBEDDED THUNDERSTORMS WITH HEAVY RAINFALL 
ACROSS THE WARNED AREA. ADDITIONAL THUNDERSHOWERS SOUTH OF MINOT 
WILL MOVE INTO THE WARNED AREA OVER THE NEXT 1 TO 2 HOURS...BRINGING 
ANOTHER ONE HALF OF AN INCH...TO ONE INCH OF RAIN TO THE WARNED 
AREA. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

EXCESSIVE RUNOFF FROM THIS STORM WILL CAUSE FLOODING OF SMALL CREEKS
AND STREAMS...HIGHWAYS AND UNDERPASSES. ADDITIONALLY...COUNTRY ROADS
AND FARMLANDS ALONG THE BANKS OF CREEKS...STREAMS AND OTHER LOW LYING
AREAS ARE ALSO SUBJECT TO FLOODING.

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY.

&&

LAT...LON 4846 10107 4817 10107 4785 10114 4785 10157
      4845 10140

$$

HEINERT
580 
WGUS73 KBIS 310002
FFSBIS

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE BISMARCK ND
702 PM CDT MON MAY 30 2011

NDC101-310016-
/O.EXP.KBIS.FF.W.0001.000000T0000Z-110531T0000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
WARD ND-
702 PM CDT MON MAY 30 2011

...THE FLASH FLOOD WARNING THAT WAS IN EFFECT FOR CENTRAL WARD COUNTY
HAS BEEN ALLOWED TO EXPIRE...

THE FLASH FLOOD WARNING HAS BEEN REPLACED WITH AN AERIAL FLOOD 
ADVISORY. IF FLOODING HAS BEEN OBSERVED...PLEASE REPORT IT TO YOUR 
LOCAL LAW ENFORCEMENT AGENCY.

LAT...LON 4846 10107 4817 10107 4785 10114 4785 10157
      4845 10140

$$

HEINERT

The office that day

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

IssuedProductOfficeCountiesLasted
May 29, 8:35 PM CDTRiver Flood WarningBISWilliams4 days
May 30, 1:57 PM CDTHigh Wind WarningBISAdams, Billings, Bottineau, Bowman, Burke, Burleigh and 26 more29 hr
May 30, 2:42 PM CDTAreal Flood AdvisoryBISWard3 hr
May 30, 4:33 PM CDTAreal Flood AdvisoryBISBottineau, McHenry, Renville6 hr
May 30, 4:48 PM CDTAreal Flood AdvisoryBISMcLean, Mercer84 min

Nearby

Flash Flood Warnings in North Dakota, 2011Every flash flood 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.