Alert archive / North Dakota / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 55, NWS Bismarck, ND

June 23, 2002Bowman County, North Dakota

NWS Bismarck, ND issued this severe thunderstorm warning at Jun 23, 2002, 2:19 PM MDT for Bowman County, North Dakota. It was in force for 41 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: Jun 23, 2002, 2:19 PM MDT (20:19 UTC)
Expired: Jun 23, 2002, 3:00 PM MDT
In force: 41 min
Issued by: NWS Bismarck, ND
Area: Counties, with a storm outline in the text

County Bowman County, ND

The radar

The Bismarck radar (KBIS), 220 km from the middle of the area, began a volume at 20:23 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.

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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jun 23, 1:15 PM MDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Bismarck Municip, ND (KBIS), launched 12:00Z, 8.3 hours before the alert went out and 225 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: 201 J/kg
Mixed-layer CIN: -305 J/kg
Mixed-layer LCL: 1219 m above ground
0-6 km bulk shear: 43 kt
0-1 km storm-relative helicity: 59 m²/s²
0-3 km storm-relative helicity: 166 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

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

000 
WUUS53 KBIS 232019
SVRBIS
NDC011-232100-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BISMARCK ND
219 PM MDT SUN JUN 23 2002

THE NATIONAL WEATHER SERVICE IN BISMARCK HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EASTERN BOWMAN COUNTY IN SOUTHWEST NORTH DAKOTA

* UNTIL 300 PM MDT

* AT 219 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 24 MILES SOUTHWEST OF SCRANTON...OR ABOUT 15
  MILES SOUTHWEST OF BOWMAN...MOVING EAST AT 20 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  SCRANTON...GASCOYNE AT 300 PM MDT

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 700 PM MDT SUNDAY
EVENING FOR WESTERN NORTH DAKOTA.

LAT...LON 4608 10371 4595 10371 4597 10303 4625 10307

RSL

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 Jun 23, 12:00 PM MDT, 2 hours 19 minutes earlier.

Area forecast discussion, Jun 23, 12:00 PM MDT, 2 hours 19 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BISMARCK ND
100 PM CDT SUN JUN 23 2002

UPPER LOW OVER NORTHEAST MONTANA WILL BRING US ONE MORE DAY OF
SEVERE THUNDERSTORM POTENTIAL. WARM FRONTAL BOUNDARY WILL BE IN
NORTHERN SOUTH DAKOTA PROVIDING LIFT...ALONG WITH LARGE SCALE ASCENT
WITH THE UPPER SYSTEM...MAINLY IN THE NORTHERN HALF OF THE STATE.

THE ARRIVAL OF SOME H5 RIDGING MONDAY...ALONG WITH SOME DEGREE OF
LOW LEVEL DRYING WOULD SUGGEST A SUNNY DRY DAY. HOWEVER...PROG
SOUNDINGS INDICATE  1000+ CAPES WITH A CONVECTIVE TEMPERATURE OF 88
DEGREES AT BISMARCK...IF WE CAN HOLD A 60 DEWPOINT (RECENT RAINS MAY
INCREASE EVAPOTRANSPIRATION). ETA AND NGM MOS SUGGEST THAT BOTH
CRITERIA WILL BE MET...SO I WILL INCLUDE A CHANCE OF
AFTERNOON/EVENING THUNDERSTORMS IN THE CENTRAL...BUT NOT IN THE
WEST...WHERE DEWPOINTS WILL DROP INTO THE MID 50S...PRECLUDING
CONVECTION.

THE LONGER RANGE FEATURES MAJOR H5 RIDGING...WHICH WILL LEAD TO SOME
HOT WEATHER FINALLY. WEAK RIPPLES IN THE RIDGE MAY BE ENOUGH FOR
ISOLATED NOCTURNAL THUNDERSTORMS THURSDAY THROUGH SATURDAY.

.BIS...NONE.
RSL

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 22, 6:02 PM MDT	Severe Thunderstorm Warning	BIS	Dickey	58 min
Jun 22, 6:13 PM MDT	Flash Flood Warning	BIS	Dickey	3 hr
Jun 22, 8:31 PM MDT	Severe Thunderstorm Warning	BIS	Adams	59 min
Jun 22, 9:06 PM MDT	Severe Thunderstorm Warning	BIS	Hettinger	54 min
Jun 22, 9:40 PM MDT	Severe Thunderstorm Warning	BIS	Dickey	65 min
Jun 22, 9:54 PM MDT	Severe Thunderstorm Warning	BIS	Grant	66 min
Jun 22, 10:18 PM MDT	Flash Flood Warning	BIS	Dickey	3 hr
Jun 23, 2:17 PM MDT	Severe Thunderstorm Warning	BIS	Dunn	58 min
Jun 23, 3:00 PM MDT	Severe Thunderstorm Warning	BIS	Dunn, Mercer, Stark	60 min
Jun 23, 3:31 PM MDT	Severe Thunderstorm Warning	BIS	Morton	59 min
Jun 23, 4:28 PM MDT	Severe Thunderstorm Warning	BIS	Mercer, Morton, Oliver	62 min
Jun 23, 4:55 PM MDT	Severe Thunderstorm Warning	BIS	McLean	65 min
Jun 23, 5:09 PM MDT	Severe Thunderstorm Warning	BIS	Burleigh	66 min
Jun 23, 5:30 PM MDT	Severe Thunderstorm Warning	BIS	Morton, Oliver	60 min
Jun 23, 5:57 PM MDT	Severe Thunderstorm Warning	BIS	Burleigh	63 min

Nearby

Severe Thunderstorm Warnings in North Dakota, 2002 Every severe thunderstorm warning in 2002

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.