Alert archive / North Dakota / Severe Thunderstorm Warnings in 2003

Severe Thunderstorm Warning 157, NWS Bismarck, ND

August 9, 2003Williams County, North Dakota

NWS Bismarck, ND issued this severe thunderstorm warning at Aug 9, 2003, 1:00 AM CDT for Williams 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: Aug 9, 2003, 1:00 AM CDT (06:00 UTC)
Expired: Aug 9, 2003, 2:00 AM CDT
In force: 60 min
Issued by: NWS Bismarck, ND
Area: Counties, with a storm outline in the text

County Williams County, ND

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 nearest sounding before it

Glasgow Intl Airport, MT (KGGW), launched 00:00Z, 6.0 hours before the alert went out and 220 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: 2301 J/kg
Mixed-layer CIN: -16 J/kg
Mixed-layer LCL: 2167 m above ground
0-6 km bulk shear: 46 kt
0-1 km storm-relative helicity: 45 m²/s²
0-3 km storm-relative helicity: 296 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 20.1

Open this sounding in Storm Lab

The text

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

612 
WUUS53 KBIS 090600
SVRISN
NDC105-090700-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE WILLISTON ND
1259 AM CDT SAT AUG 9 2003

THE NATIONAL WEATHER SERVICE IN WILLISTON HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN WILLIAMS COUNTY IN NORTHWESTERN NORTH DAKOTA

* UNTIL 200 AM CDT

* AT 1257 PM CDT...NATIONAL WEATHER SERVICE RADAR INDICATED A SEVERE
  THUNDERSTORM 6 MILES SOUTHWEST OF GRENORA... MOVING EAST AT 30
MPH.


* THE SEVERE THUNDERSTORM WILL BE NEAR...
  GRENORA AT 110 AM CDT
  HANKS AT 120 AM CDT
  ZAHL AT 130 AM CDT
  APPAM AT 140 AM CDT
  ALAMO AT 150 AM CDT

DAMAGING WINDS AND LARGE HAIL ARE LIKELY. GO INSIDE A STURDY
BUILDING AND STAY AWAY FROM WINDOWS

LAT...LON 4863 10403 4803 10403 4803 10385 4813 10372
          4815 10290 4863 10290

$$

BURKE

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 Aug 8, 2:45 PM CDT, 10 hours 15 minutes earlier.

Area forecast discussion, Aug 8, 2:45 PM CDT, 10 hours 15 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BISMARCK ND
245 PM CDT FRI AUG 8 2003

THE MAIN CONCERN FOR THE SHORT TERM IS CHANCE OF THUNDERSTORMS AND
POSSIBILITY OF THEM BECOMING SEVERE. SOLAR HEATING AND LOW LEVEL
CONVERGENCE MAY OVERCOME A MID LEVEL CAP TO CAUSE A FEW THUNDERSTORMS
BY LATE AFTERNOON. VERTICAL SHEAR AND SIGNIFICANT CAPES MAY BE ENOUGH
FOR SEVERE THUNDERSTORMS THIS EVENING. ON SATURDAY...SOLAR HEATING
WILL AGAIN DESTABILIZE THE LOWER ATMOSPHERE WHILE SPEED MAXES WILL
PROVIDE DYNAMICS ALOFT. A FEW SEVERE THUNDERSTOREMS ARE POSSIBLE.

MODELS FORECAST A WARM DRY UPPER RIDGE FOR THE REGION THE EARLY PART
OF NEXT WEEK. THEN THE RIDGE AXIS MOVES EAST AND THE FORECAST AREA
IS IN SOUTHWEST FLOW ALOFT. ENSUING SHORT WAVES WILL BRING A CHANCE
OF THUNDERSTORMS BY THURSDAY.

.BIS...NONE.

LM

Hazardous weather outlook, Aug 8, 4:40 AM CDT, 20 hours 20 minutes before

NDZ001>005-009>013-017>023-025-031>037-040>048-050-051-090945-

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE BISMARCK ND
440 AM CDT FRI AUG 8 2003

THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN AND CENTRAL NORTH
DAKOTA.

.DAY ONE...TODAY AND TONIGHT

THERE IS A SLIGHT CHANCE OF SEVERE THUNDERSTORMS LATE THIS
AFTERNOON AND TONIGHT OVER WESTERN AND CENTRAL NORTH DAKOTA.
PRIMARY THREAT WILL BE LARGE HAIL AND DAMAGING THUNDERSTORM WINDS.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY

THERE IS A SLIGHT CHANCE OF SEVERE THUNDERSTORMS SATURDAY.
PRIMARY THREAT WILL BE LARGE HAIL AND DAMAGING THUNDERSTORM WINDS.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED

TURNER

In the hours before

Local storm report, Aug 8, 7:38 PM CDT, 5 hours 22 minutes before

ZCZC BISLSRBIS ALL

TTAA00 KBIS DDHHMM

PRELIMINARY LOCAL STORM REPORT

NATIONAL WEATHER SERVICE BISMARCK ND

738 PM CDT FRI AUG 08 2003

TIME(CDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...

           ....COUNTY LOCATION....

0640 PM    12 N BLAISDELL            ND   1.75 INCH HAIL

08/08/03   MOUNTRAIL                      REPORTED BY STORM

                                          SPOTTER.

0708 PM    FLAXTON                   ND   1.75 INCH HAIL

08/08/03   BURKE                          REPORTED BY STORM

                                          SPOTTER.

NNNN

Local storm report, Aug 8, 9:31 PM CDT, 3 hours 29 minutes before

ZCZC BISLSRBIS ALL

TTAA00 KBIS DDHHMM

PRELIMINARY LOCAL STORM REPORT

NATIONAL WEATHER SERVICE BISMARCK ND

931 PM CDT FRI AUG 08 2003

TIME(CDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...

           ....COUNTY LOCATION....

0520 PM    KENMARE                   ND   1.5 INCH HAIL

08/08/03   WARD                           EVENT DURATION 10

                                          MINUTES. REPORTED BY

                                          PUBLIC.

NNNN

Special weather statement, Aug 8, 11:12 PM CDT, 1 hour 48 minutes before

NDZ001>005-009>013-017>023-031>036-040-041-090445-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BISMARCK ND
1112 PM CDT FRI AUG 8 2003

...SEVERE THUNDERSTORM WATCH NUMBER 851 ALLOWED TO EXPIRE...

THE SEVERE THUNDERSTORM WATCH THAT WAS IN EFFECT UNTIL 1100 PM CDT
(1000 PM MDT) FOR MUCH OF WESTERN AND CENTRAL NORTH DAKOTA HAS BEEN
ALLOWED TO EXPIRE.  HOWEVER...THE POTENTIAL FOR ISOLATED SEVERE
THUNDERSTORMS WILL CONTINUE ACROSS THE AREA OVERNIGHT.  STAY TUNED
TO NOAA WEATHER RADIO OR LOCAL MEDIA FOR THE LATEST WEATHER
INFORMATION.

SCHULTZ/RGT

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 8, 7:09 PM CDT	Severe Thunderstorm Warning	BIS	Burke	51 min
Aug 8, 7:19 PM CDT	Severe Thunderstorm Warning	BIS	Bowman, Slope	76 min
Aug 8, 7:41 PM CDT	Severe Thunderstorm Warning	BIS	Bottineau	64 min
Aug 8, 8:30 PM CDT	Severe Thunderstorm Warning	BIS	Billings, Golden Valley	60 min
Aug 9, 1:07 AM CDT	Severe Thunderstorm Warning	BIS	Divide	63 min
Aug 9, 3:26 AM CDT	Severe Thunderstorm Warning	BIS	Williams	59 min
Aug 9, 4:16 AM CDT	Severe Thunderstorm Warning	BIS	Bottineau	59 min
Aug 9, 5:04 AM CDT	Severe Thunderstorm Warning	BIS	Renville	56 min
Aug 9, 5:16 AM CDT	Severe Thunderstorm Warning	BIS	Bottineau	59 min
Aug 9, 5:43 AM CDT	Severe Thunderstorm Warning	BIS	Ward	62 min
Aug 9, 6:26 AM CDT	Severe Thunderstorm Warning	BIS	McHenry	64 min
Aug 9, 10:15 AM CDT	Severe Thunderstorm Warning	BIS	Emmons	60 min
Aug 9, 11:17 AM CDT	Severe Thunderstorm Warning	BIS	Emmons, McIntosh	58 min

Nearby

Severe Thunderstorm Warnings in North Dakota, 2003 Every severe thunderstorm warning in 2003

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.