Alert archive / North Dakota / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 47, NWS Bismarck, ND

June 22, 2002McHenry County, North Dakota

NWS Bismarck, ND issued this severe thunderstorm warning at Jun 22, 2002, 7:14 AM CDT for McHenry County, North Dakota. It was in force for 61 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 22, 2002, 7:14 AM CDT (12:14 UTC)
Expired: Jun 22, 2002, 8:15 AM CDT
In force: 61 min
Issued by: NWS Bismarck, ND
Area: Counties, with a storm outline in the text

County McHenry 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

Bismarck Municip, ND (KBIS), launched 12:00Z, 0.2 hours before the alert went out and 158 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: 1721 J/kg
Mixed-layer CIN: -377 J/kg
Mixed-layer LCL: 1049 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: 273 m²/s²
0-3 km storm-relative helicity: 275 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 221214
SVRBIS
NDC049-221315-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BISMARCK ND
712 AM CDT SAT JUN 22 2002

THE NATIONAL WEATHER SERVICE IN BISMARCK HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CENTRAL MCHENRY COUNTY IN NORTH CENTRAL NORTH DAKOTA

* UNTIL 815 AM CDT

* AT 712 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM OVER BERGEN...OR ABOUT 28 MILES SOUTHEAST OF
  MINOT...MOVING NORTHEAST AT 30 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  KARLSRUHE AT 720 AM CDT
  DENBIGH AT 735 AM CDT
  TOWNER AT 750 AM CDT

IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER FROM THE WEATHER IN A STRONG
BUILDING. DAMAGING WIND...LARGE HAIL...VERY HEAVY RAIN...AND DEADLY
LIGHTNING ARE ALL POSSIBLE IN SEVERE THUNDERSTORMS. STAY INSIDE AWAY
FROM WINDOWS UNTIL THE STORM HAS PASSED.

LAT...LON 4809 10097 4791 10070 4809 10027 4839 10030
          4855 10055

VINING

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 22, 2:00 AM CDT, 5 hours 14 minutes earlier.

Area forecast discussion, Jun 22, 2:00 AM CDT, 5 hours 14 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BISMARCK ND
200 AM CDT SAT JUN 22 2002

PROBLEMS TODAY ARE SEVERE CONVECTION AND HEAVY RAIN POSSIBILITY. AVN
GENERALLY AGREES WITH ETA FIRST FEW PERIODS...BUT BY SUNDAY AVN
OPENS UP H500 LOW INTO A WEAK SHORTWAVE. YESTERDAYS MODEL RUNS KEPT
THIS FEATURE A CLOSED LOW OVER ND...JUST WHAT THE ETA AND NGM ARE
DOING TODAY. THINK AVN HAS A HANDLE ON FIRST COUPLE OF PERIODS...BUT
THEN SOLNS DIVERGE. WILL FOLLOW ETA FOR FORECAST TODAY.

YESTERDAY EVENINGS SOUNDINGS INDICATED CAPPING OVER SD/ND WITH H700
TEMPS OF 10 TO 12 DEGREES C. MODEL PROGS INDICATE THIS CAP NOT
WEAKENING UNTIL SAT AFTERNOON/EVENING...BUT ANY UPPER LEVEL IMPULSE
WILL DISRUPT CAP. ALSO...NORTHERN NORTH DAKOTA NOT IN A CAPPED
ENVIRONMENT. MODELS SHOW VORT CENTERS/SHORTWAVES OVER ERN
MONTANA/NORTH DAKOTA INTENSIFYING FROM 06Z TO 12Z TODAY...AND
PRESENT CONVECTION IN ERN MONTANA HAS BEEN INCREASING IN AREAL
COVERAGE PAST FEW HOURS. CONVECTION ALSO IN NRN NORTH DAKOTA NORTH
OF CAP. EXPECT THIS ENERGY TO MOVE EAST/NORTHEAST ACROSS THE STATE
THIS MORNING. FORECAST SOUNDINGS INDICATED K INDICES OF 30 OR MORE
WITH CAPE VALUES OVER 3000. AS SURFACE LOW MOVES INTO SOUTH DAKOTA
AND H700 CAP BREAKS DOWN WITH H500 TROUGH APPROACHING THE
DAKOTAS...EXPECT ANOTHER ROUND OF CONVECTION LATE THIS
AFTERNOON/EVENING IN THE WEST...AND THIS EVENING/OVERNIGHT CENTRAL.
CHANCE OF THUNDERSTORMS CONTINUES THROUGH MONDAY AS UPPER LEVEL LOW
REMAINS IN THE NORTHERN PLAINS.

.BIS...NONE.
VINING

In the hours before

Special weather statement, Jun 22, 1:49 AM CDT, 5 hours 25 minutes before

NDZ001-009-017-220845-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE WILLISTON ND
150 AM CDT (1250 AM MDT) SAT JUN 22 2002

SCATTERED THUNDERSTORMS SHOWERS HAVE MOVED INTO NORTHEASTERN MONTANA
AND ARE MOVING EAST AT 25 MPH. THIS ACTIVITY IS EXPECTED TO CONTINUE
EAST INTO WESTERN DIVIDE...WILLIAMS AND MCKENZIE COUNTIES AND
CONTINUE EAST OUT OF THE COUNTIES EARLY THIS MORNING. MODERATE TO
HEAVY PRECIPITATION GUSTY WINDS CAN BE EXPECTED WITH THIS STORM. USE
CAUTION AND REMAIN INDOORS TO ASSURE SAFETY.

KROLAK

Special weather statement, Jun 22, 5:00 AM CDT, 2 hours 14 minutes before

NDZ001>005-009>013-017>023-025-031>037-040>048-050-051-221400-

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE BISMARCK ND
500 AM CDT SAT JUN 22 2002

...A GOOD CHANCE OF SEVERE THUNDERSTORMS TODAY AND TONIGHT...

A LOW PRESSURE CENTER OVER WYOMING AND THE DAKOTAS WILL ALLOW
MOISTURE CONVERGENCE AND LIFT...WHILE UPPER LEVEL IMPULSES SET OF
THUNDERSTORMS TODAY AND TONIGHT. THE ATMOSPHERE IS ALREADY
UNSTABLE...AND SEVERE THUNDERSTORMS WILL BE POSSIBLE TODAY AND
TONIGHT.

SEVERE WEATHER STORM SPOTTERS WILL PROBABLY BE ACTIVATED TODAY AND
TONIGHT.

VINING

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 22, 2:54 AM CDT	Severe Thunderstorm Warning	BIS	Billings, Dunn	66 min
Jun 22, 3:31 AM CDT	Severe Thunderstorm Warning	BIS	Golden Valley	59 min
Jun 22, 4:01 AM CDT	Severe Thunderstorm Warning	BIS	Billings	59 min
Jun 22, 4:13 AM CDT	Severe Thunderstorm Warning	BIS	Dunn	62 min
Jun 22, 4:27 AM CDT	Severe Thunderstorm Warning	BIS	McHenry	63 min
Jun 22, 5:16 AM CDT	Severe Thunderstorm Warning	BIS	Dunn	59 min
Jun 22, 5:27 AM CDT	Severe Thunderstorm Warning	BIS	McLean, Mountrail, Ward	63 min
Jun 22, 5:40 AM CDT	Severe Thunderstorm Warning	BIS	Pierce	50 min
Jun 22, 6:29 AM CDT	Severe Thunderstorm Warning	BIS	McLean, Ward	61 min
Jun 22, 6:05 PM CDT	Severe Thunderstorm Warning	BIS	Dickey	55 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.