Alert archive / North Dakota / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 100, NWS Bismarck, ND

July 19, 2001Divide County, Williams County, North Dakota

NWS Bismarck, ND issued this severe thunderstorm warning at Jul 19, 2001, 3:03 PM CDT for Divide County, Williams County, North Dakota. It was in force for 62 min. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: Jul 19, 2001, 3:03 PM CDT (20:03 UTC)
Expired: Jul 19, 2001, 4:05 PM CDT
In force: 62 min
Issued by: NWS Bismarck, ND
Area: Whole counties

Counties Divide County, ND, Williams County, ND

What was reported inside it

Time	Report	Where	Remark
Jul 19, 4:00 PM CDT	Hail 0.75	Alkabo, ND

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

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 19, 2:30 PM CDT	Tornado Watch	SPC	5 hr

The nearest sounding before it

Glasgow Intl Airport, MT (KGGW), launched 12:00Z, 8.1 hours before the alert went out and 234 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: 6 J/kg
Mixed-layer CIN: -292 J/kg
Mixed-layer LCL: 1879 m above ground
0-6 km bulk shear: 43 kt
0-1 km storm-relative helicity: 27 m²/s²
0-3 km storm-relative helicity: 116 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.

000 
WUUS53 KBIS 192004
SVRISN

NDC023-105-192105-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE WILLISTON ND
303 PM CDT THU JUL 19 2001

THE NATIONAL WEATHER SERVICE IN WILLISTON HAS ISSUED A

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

* UNTIL 405 PM CDT

* AT 303 PM CDT...NATIONAL WEATHER SERVICE WARNING RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS FROM 30 MILES NORTHWEST OF WILLISTON
  TO 30 MILES WEST OF WILLISTON... MOVING NORTHEST AT 35 MPH.

* THE SEVERE THUNDERSTORMS WILL BE NEAR...
  ZAHL BY 350 PM CDT

GO INSIDE A STURDY BUILDING AND STAYJ AWAY FROM WINDOWS! A TORNADO
WATCH IS IN EFFECT. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO
PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING.

THOMSON

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 19, 3:45 AM CDT, 11 hours 18 minutes earlier.

Area forecast discussion, Jul 19, 3:45 AM CDT, 11 hours 18 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BISMARCK ND
345 AM CDT THU JUL 19 2001

WK SFC HIGH PRES CENTERED OVER CNTRL ND IN WAKE OF OVERNIGHT
CONVECTION. SFC LOW WL ONCE AGAIN DEVELOP OVER WRN DAKOTAS TODAY IN
RESPONSE TO PERSISTANT NWRN US UPR TROF. S/W WL WORK THROUGH MT AND
INTO WRN ND THIS AFTN. INSTABILITY IS NOT AS GREAT ACROSS THE REGION
TODAY BUT CONV INHIBITION WL BE LOWER SO EXPECT ANOTHER ROUND OF
THUNDERSTORMS. AND ONCE AGAIN INGREDIENTS ARE THERE THAT SOME MAY BE
SEVERE. ANOTHER S/W WL PROVIDE A CHANCE OF TSTMS BY LATE FRIDAY AFTN
IN THE WEST. THEN INTO SCNTRL ND BY LATE FRIDAY NITE. AS FOR TEMPS
AND WIND SEE LTL NEED TO DO MUCH ADJUSTING FROM PREV FCST.

.BIS...NONE.
TWH

In the hours before

Local storm report, Jul 19, 12:02 PM CDT, 3 hours 1 minute before

PRELIMINARY LOCAL STORM REPORT

NATIONAL WEATHER SERVICE BISMARCK ND

1202 PM CDT THU JUL 19 2001

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

           ....COUNTY LOCATION....

1104 PM    MONANGO                   ND   .75 INCH HAIL

07/18/01   DICKEY                         REPORTED BY LAW

                                          ENFORCEMENT OFFICIAL.

1111 PM    HETTINGER ARPT            ND   72 MPH TSTM GUST

07/18/01   ADAMS                          REPORTED BY ASOS.

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 18, 7:20 PM CDT	Severe Thunderstorm Warning	BIS	Stutsman	55 min
Jul 18, 8:16 PM CDT	Severe Thunderstorm Warning	BIS	Stutsman	59 min
Jul 18, 8:23 PM CDT	Severe Thunderstorm Warning	BIS	Logan, McIntosh	67 min
Jul 18, 8:25 PM CDT	Severe Thunderstorm Warning	BIS	Bowman	60 min
Jul 18, 8:52 PM CDT	Tornado Warning	BIS	LaMoure, Stutsman	38 min
Jul 18, 8:56 PM CDT	Severe Thunderstorm Warning	BIS	McIntosh	64 min
Jul 18, 9:28 PM CDT	Severe Thunderstorm Warning	BIS	Bowman	62 min
Jul 18, 9:30 PM CDT	Severe Thunderstorm Warning	BIS	Stutsman	45 min
Jul 18, 10:07 PM CDT	Severe Thunderstorm Warning	BIS	Logan, McIntosh	53 min
Jul 18, 10:30 PM CDT	Severe Thunderstorm Warning	BIS	Adams, Bowman	60 min
Jul 18, 10:49 PM CDT	Severe Thunderstorm Warning	BIS	LaMoure	56 min
Jul 18, 10:59 PM CDT	Severe Thunderstorm Warning	BIS	Dickey	31 min
Jul 18, 11:31 PM CDT	Severe Thunderstorm Warning	BIS	Adams	44 min
Jul 19, 12:16 AM CDT	Severe Thunderstorm Warning	BIS	Sioux	59 min
Jul 19, 1:39 AM CDT	Severe Thunderstorm Warning	BIS	Emmons	51 min
Jul 19, 3:35 AM CDT	Severe Thunderstorm Warning	BIS	LaMoure, Logan	55 min
Jul 19, 3:58 AM CDT	Severe Thunderstorm Warning	BIS	Stutsman	62 min
Jul 19, 4:05 PM CDT	Severe Thunderstorm Warning	BIS	Divide, Williams	60 min
Jul 19, 4:43 PM CDT	Severe Thunderstorm Warning	BIS	Burke, Mountrail	62 min
Jul 19, 5:15 PM CDT	Tornado Warning	BIS	Burke, Mountrail	45 min
Jul 19, 5:31 PM CDT	Tornado Warning	BIS	Ward	29 min
Jul 19, 6:00 PM CDT	Tornado Warning	BIS	Ward	30 min

Nearby

Severe Thunderstorm Warnings in North Dakota, 2001 Every severe thunderstorm warning in 2001

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.