Alert archive / North Dakota / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 150, NWS Bismarck, ND

August 13, 2000Morton County, North Dakota

NWS Bismarck, ND issued this severe thunderstorm warning at Aug 13, 2000, 11:44 PM MDT for Morton County, North Dakota. It was in force for 46 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.

The facts

Issued: Aug 13, 2000, 11:44 PM MDT (05:44 UTC)
Expired: Aug 14, 2000, 12:30 AM MDT
In force: 46 min
Issued by: NWS Bismarck, ND
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Morton County, ND

The radar

The Bismarck radar (KBIS), 83 km from the middle of the area, began a volume at 05:44 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 watch it was issued in

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

Issued	Product	Office	Lasted
Aug 13, 10:45 PM MDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Bismarck Municip, ND (KBIS), launched 00:00Z, 5.7 hours before the alert went out and 88 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: 56 J/kg
Mixed-layer CIN: -452 J/kg
Mixed-layer LCL: 2518 m above ground
0-6 km bulk shear: 53 kt
0-1 km storm-relative helicity: 159 m²/s²
0-3 km storm-relative helicity: 434 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.

266 
WUUS53 KBIS 140545
SVRBIS
NDC059-140630-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BISMARCK ND
1144 PM MDT SUN AUG 13 2000

THE NATIONAL WEATHER SERVICE IN BISMARCK HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  WESTERN MORTON COUNTY IN SOUTH CENTRAL NORTH DAKOTA

* UNTIL 1230 AM MDT

* AT 1144 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM OVER HEBRON...OR ABOUT 31 MILES EAST OF
  DICKINSON...MOVING EAST AT 25 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  HEBRON AT 1150 PM MDT
  GLEN ULLIN AT MIDNIGHT MDT

VERY LARGE HAIL IS POSSIBLE WITH THIS SEVERE THUNDERSTORM. IF YOU ARE
IN THE PATH OF THE STORM...PUT YOUR CAR IN A GARAGE AND MOVE TO A
SUBSTANTIAL SHELTER.

LAT...LON 4696 10210 4676 10209 4676 10145 4696 10147

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 13, 1:40 PM MDT, 10 hours 4 minutes earlier.

Area forecast discussion, Aug 13, 1:40 PM MDT, 10 hours 4 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BISMARCK ND
240 PM CDT SUN AUG 13 2000

12Z ETA RUN WAS OUTSTANDING WITH MORNING CONVECTION DUE WAA AND H5
VORT MAX. WITH THAT ONE WOULD BE INCLINED TO FOLLOW IT ON THE
DETAILS...BUT IF THAT IS DONE ALL POPS WOULD BE DROPPED FROM ZONES
FOR TONIGHT. NGM FOLLOWS THIS PATH AS WELL. THESE MODELS REDEVELOP
DEEP MOIST CONVECTION MONDAY MORNING CENTRAL AND SPREAD IT EAST IN
RESPONSE TO SURFACE TROF AND NEXT VORT MAX PASSING THROUGH. AVN ALSO
DID A RESPECTABLE JOB THIS AM AND IT HAS CONVECTION OVER THE CWA
TONIGHT. BASED ON ALL MODELS HAVING SURFACE FRONT ENTERING STATE
TONIGHT...ALL HAVING SOME LIFT AT H5 AS WELL AS AT H7...AN USTABLE
ATMOSPHERE...AND AT LEAST SOME AVAILABLE POTENTIAL ENERGY...I HAVE
OPTED TO KEEP POPS IN TONIGHT...AND ADD THE CHANCE OF SEVERE. ACTION
SHIFTS EAST AROUND 06Z BEFORE ANOTHER BATCH MOVES OVER CWA IN
RESPONSE TO THAT SECOND MAX I SPOKE OF EARLIER. THIS SHOULD KEEP
SOME CHANCE...LOW...OF STORMS IN CENTRAL ND THROUGH EARLY MORNING
MONDAY...AND UNTIL 18Z IN JMS ZONE. CONCERN MONDAY THEN GOES TO WIND
SPEED IN LINKAGE ALOFT AND TIGHTENING GRADIENT. LATEST RUN INDICATES
HIGHER SPEEDS THAN PREVIOUSLY FORECAST. WILL RAISE SPEEDS BY 5 AND
HOLD OFF ON WINDY WORDING. DRY WEATHER THEN PREVAILS THROUGH
TUESDAY. MRF HOLDS WITH IDEA OF THE NEXT STORM CHANCE COMING TUESDAY
NIGHT OR WEDNESDAY. TEMPS THROUGH PERIOD WILL BE DIFFICULT. CAA
MONDAY WILL ACT TO HOLD TEMPS BACK BUT THIS IS COUNTERED BY A GOOD
DEAL OF SUNSHINE...AT LEAST WEST. NUMERICAL TEMPERATURE GUIDANCE
LOOKS LOW TO ME THROUGH FORECAST PERIOD BASED ON FORECAST HEIGHTS/
THICKNESSES/TEMPS ALOFT. WILL ADJUST UPWARDS.

WILL LOOK FOR A WATCH TO BE ISSUED FOR WESTERN HALF OF CWA PERIOD
ONE IF/WHEN CONVECTION BEGINS DEVELOPING IN EASTERN MONTANA.

.BIS...NONE.

JP MARTIN

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 13, 8:13 PM MDT	Severe Thunderstorm Warning	BIS	Dunn, Stark	47 min
Aug 13, 8:32 PM MDT	Severe Thunderstorm Warning	BIS	Mercer	43 min
Aug 13, 9:12 PM MDT	Severe Thunderstorm Warning	BIS	Dunn	63 min
Aug 13, 9:19 PM MDT	Severe Thunderstorm Warning	BIS	Golden Valley	26 min
Aug 13, 10:16 PM MDT	Severe Thunderstorm Warning	BIS	McLean	59 min
Aug 14, 2:21 AM MDT	Severe Thunderstorm Warning	BIS	Stutsman	39 min

Nearby

Severe Thunderstorm Warnings in North Dakota, 2000 Every severe thunderstorm warning in 2000

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.