Alert archive / North Dakota / Flash Flood Warnings in 2011

Flash Flood Warning 8, NWS Bismarck, ND

June 18, 2011Mercer County, Morton County, Oliver County, North Dakota

NWS Bismarck, ND issued this flash flood warning at Jun 18, 2011, 5:59 PM CDT for Mercer County, Morton County, Oliver County, North Dakota. It was in force for 5 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: Jun 18, 2011, 5:59 PM CDT (22:59 UTC)
Expired: Jun 18, 2011, 11:23 PM CDT
In force: 5 hr
Issued by: NWS Bismarck, ND
Area: Storm-based polygon
Flood severity: None

Counties Mercer County, ND, Morton County, ND, Oliver County, ND

The radar

The Bismarck radar (KBIS), 77 km from the middle of the area, began a volume at 23:00 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.

The nearest sounding before it

Bismarck Municip, ND (KBIS), launched 12:00Z, 11.0 hours before the alert went out and 81 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1532 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: 82 m²/s²
0-3 km storm-relative helicity: 43 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.

916 
WGUS53 KBIS 182259
FFWBIS
NDC057-059-065-190500-
/O.NEW.KBIS.FF.W.0008.110618T2259Z-110619T0500Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE BISMARCK ND
559 PM CDT SAT JUN 18 2011

THE NATIONAL WEATHER SERVICE IN BISMARCK HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  NORTHWESTERN MORTON COUNTY IN SOUTH CENTRAL NORTH DAKOTA...
  SOUTHEASTERN MERCER COUNTY IN SOUTH CENTRAL NORTH DAKOTA...
  WESTERN OLIVER COUNTY IN SOUTH CENTRAL NORTH DAKOTA...

* UNTIL MIDNIGHT CDT SUNDAY

* AT 558 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  SLOW MOVING THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE      
  WARNED AREA. RAINFALL RATES UP TO TWO INCHES PER HOUR WITH THESE   
  THUNDERSTORMS.

* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
  OCCUR. FLASH FLOODING IS EXPECTED TO OCCUR OVER MAINLY RURAL AREAS
  OF NORTHWESTERN MORTON...SOUTHEASTERN MERCER AND WESTERN OLIVER
  COUNTIES...INCLUDING THE TOWNS OF CENTER...HANNOVER...HAZEN AND
  STANTON.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...COUNTRY ROADS...AS WELL AS FARMLAND ALONG THE
BANKS OF CREEKS AND STREAMS.

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 4708 10206 4742 10144 4731 10135 4730 10135
      4729 10132 4712 10118 4686 10190

$$

AYD

3 follow-up statements

528 
WGUS73 KBIS 190016
FFSBIS

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE BISMARCK ND
716 PM CDT SAT JUN 18 2011

NDC057-059-065-190500-
/O.CON.KBIS.FF.W.0008.000000T0000Z-110619T0500Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MERCER ND-OLIVER ND-MORTON ND-
716 PM CDT SAT JUN 18 2011

...FLASH FLOOD WARNING REMAINS IN EFFECT FOR NORTHWESTERN MORTON...
WESTERN OLIVER AND SOUTHEASTERN MERCER COUNTIES UNTIL MIDNIGHT CDT...

AT 713 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 
THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE WARNED AREA. AT 
640 PM CDT...A SPOTTER 15 MILES NORTHEAST OF HEBRON REPORTED 2.70 
INCHES OF RAIN IN ONE HOUR. TWO TO THREE INCHES OF RAIN WITH LOCALLY 
HIGHER AMOUNTS HAS LIKELY FALLEN ALONG A LINE FROM 4 TO 26 MILES 
NORTHEAST OF HEBRON. AN ADDITIONAL ONE HALF TO THREE QUARTERS OF AN 
INCH OF RAINFALL IS POSSIBLE.

RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
OCCUR. IS EXPECTED TO OCCUR OVER MAINLY RURAL AREAS OF NORTHWESTERN
MORTON...SOUTHEASTERN MERCER AND WESTERN OLIVER COUNTIES...INCLUDING 
THE TOWNS OF CENTER...HANNOVER...HAZEN AND STANTON. RAPID RISES ON 
FASTER RESPONDING CREEKS AND STREAMS ARE ALSO POSSIBLE ACROSS 
SOUTHERN MERCER AND WESTERN OLIVER COUNTY...WHICH MAY LEAD TO 
FLOODING.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

EXCESSIVE RUNOFF FROM THIS STORM WILL CAUSE FLOODING OF SMALL CREEKS
AND STREAMS...COUNTRY ROADS...NORMALLY DRY WASHES... AS WELL AS
FARMLAND ALONG THE BANKS OF CREEKS AND STREAMS.

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 4708 10206 4742 10144 4731 10135 4730 10135
      4729 10132 4712 10118 4686 10190

$$

658 
WGUS73 KBIS 190329
FFSBIS

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE BISMARCK ND
1029 PM CDT SAT JUN 18 2011

NDC057-059-065-190500-
/O.CON.KBIS.FF.W.0008.000000T0000Z-110619T0500Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MERCER ND-OLIVER ND-MORTON ND-
1029 PM CDT SAT JUN 18 2011

...FLASH FLOOD WARNING REMAINS IN EFFECT FOR NORTHWESTERN MORTON...
WESTERN OLIVER AND SOUTHEASTERN MERCER COUNTIES UNTIL MIDNIGHT CDT...

AT 1022 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 
THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE SOUTHERN PORTION 
OF THE WARNED AREA...FROM JUST NORTH OF CENTER...SOUTHWEST TO FAR 
SOUTHWEST OLIVER COUNTY...AND FAR NORTHERN PORTIONS OF MORTON 
COUNTY...NORTH OF GLEN ULLIN. DOPPLER RADAR ESTIMATES 1 TO 1.5 
INCHES OF RAIN IN THIS AREA DURING THE PAST HOUR. THIS IS ADJACENT 
TO AN AREA THAT RECEIVE HEAVY RAIN EARLIER THIS EVENING.

RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO 
OCCUR....OVER MAINLY RURAL AREAS OF NORTHWESTERN MORTON... 
SOUTHEASTERN MERCER AND WESTERN OLIVER COUNTIES...INCLUDING THE 
TOWNS OF CENTER...HANNOVER AND HAZEN.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

EXCESSIVE RUNOFF FROM THIS STORM WILL CAUSE FLOODING OF SMALL CREEKS
AND STREAMS...COUNTRY ROADS...NORMALLY DRY WASHES... AS WELL AS
FARMLAND ALONG THE BANKS OF CREEKS AND STREAMS.

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING. IF FLOODING IS OBSERVED...ACT QUICKLY. DO NOT
ENTER THE WATER. TURN AROUND AND MOVE UP TO HIGHER GROUND. DO NOT
STAY IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING.

&&

LAT...LON 4708 10206 4742 10144 4731 10135 4730 10135
      4729 10132 4712 10118 4686 10190

$$

HAMILTON

484 
WGUS73 KBIS 190423
FFSBIS

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE BISMARCK ND
1123 PM CDT SAT JUN 18 2011

NDC057-059-065-190437-
/O.CAN.KBIS.FF.W.0008.000000T0000Z-110619T0500Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MERCER ND-OLIVER ND-MORTON ND-
1123 PM CDT SAT JUN 18 2011

...THE FLASH FLOOD WARNING THAT WAS IN EFFECT FOR NORTHWESTERN
MORTON...WESTERN OLIVER AND SOUTHEASTERN MERCER COUNTIES IS
CANCELLED...

THE FLASH FLOOD WARNING HAS BEEN REPLACED BY AN OVERLAND FLOOD 
WARNING FOR ESSENTIALLY THE SAME AREA. THE OVERLAND FLOOD WARNING 
WILL CONTINUE THROUGH SUNDAY EVENING. IF FLOODING HAS BEEN 
OBSERVED...PLEASE REPORT IT TO YOUR LOCAL LAW ENFORCEMENT AGENCY.

LAT...LON 4708 10206 4742 10144 4731 10135 4730 10135
      4729 10132 4712 10118 4686 10190

$$

HAMILTON

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 18, 5:01 PM CDT	Severe Thunderstorm Warning	BIS	Mercer, Morton, Oliver	59 min
Jun 18, 5:20 PM CDT	Severe Thunderstorm Warning	BIS	Grant, Morton	44 min
Jun 18, 5:26 PM CDT	Tornado Warning	BIS	Grant, Morton	21 min
Jun 18, 6:02 PM CDT	Tornado Warning	BIS	Grant, Morton	28 min
Jun 18, 6:26 PM CDT	Flash Flood Warning	BIS	Grant, Morton	3 hr
Jun 18, 6:35 PM CDT	Severe Thunderstorm Warning	BIS	Grant, Sioux	55 min
Jun 18, 6:40 PM CDT	Severe Thunderstorm Warning	BIS	Grant, Morton	65 min

Nearby

Flash Flood Warnings in North Dakota, 2011 Every 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; radar from the NEXRAD Level II archive.