Alert archive / Minnesota / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 94, NWS Grand Forks, ND

July 15, 2001Beltrami County, Minnesota

NWS Grand Forks, ND issued this severe thunderstorm warning at Jul 15, 2001, 4:17 PM CDT for Beltrami County, Minnesota. It was in force for 58 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: Jul 15, 2001, 4:17 PM CDT (21:17 UTC)
Expired: Jul 15, 2001, 5:15 PM CDT
In force: 58 min
Issued by: NWS Grand Forks, ND
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Beltrami County, MN

The radar

The Fargo/Grand Forks radar (KMVX), 161 km from the middle of the area, began a volume at 21:21 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 nearest sounding before it

International Fa, MN (KINL), launched 12:00Z, 9.3 hours before the alert went out and 160 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: 411 J/kg
Mixed-layer CIN: -131 J/kg
Mixed-layer LCL: 659 m above ground
0-6 km bulk shear: 32 kt
0-1 km storm-relative helicity: 121 m²/s²
0-3 km storm-relative helicity: 186 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.3

Open this sounding in Storm Lab

The text

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

761 
WUUS53 KFGF 152117
SVRFAR
MNC007-152215-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE EASTERN ND-GRAND FORKS
417 PM CDT SUN JUL 15 2001

THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...

  NORTHWESTERN BELTRAMI COUNTY IN NORTH CENTRAL MINNESOTA.

* UNTIL 515 PM CDT.

* AT 415 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 10 MILES SOUTH OF JELLE...OR ABOUT 35 MILES
  EAST OF THIEF RIVER FALLS...MOVEMENT WAS TO THE NORTHEAST AT 15
  MPH.

* LARGE HAIL AND DAMAGING WINDS ARE POSSIBLE WITH THIS STORM

* THE SEVERE THUNDERSTORM WILL BE NEAR...

  JELLE AT 450 PM CDT...
  THORHULT AT 500 PM CDT AND
  MALCOLM AT 510 PM CDT.

REMEMBER SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE
TORNADOES WITH LITTLE OR NO ADVANCE WARNING.

LAT...LON 4809 9561 4797 9540 4826 9498 4841 9531


$$
BRAZZELL

NNNN

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 Grand Forks, ND wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 15, 2:25 PM CDT, 1 hour 52 minutes earlier.

Area forecast discussion, Jul 15, 2:25 PM CDT, 1 hour 52 minutes before

FORECAST DISCUSSION FOR EASTERN NORTH DAKOTA AND NORTHWEST MINNESOTA
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
225 PM CDT SUN JUL 15 2001

.CURRENT OBSERVATIONS...18Z SFC ANALYSIS SHOWED A NUMBER OF
BOUNDARIES BISECTING THE REGION. CLUSTER OF THUNDERSTORMS WHICH
MOVED THROUGH THE BISMARCK AREA IS ON TRACK TO MOVE OVER THE DEVILS
LAKE BASIN WITHIN THE NEXT FEW HOURS.

.SHORT TERM...SITUATION IS SHAPING UP FOR A HEAVY RAIN EVENT ACROSS
PORTIONS OF THE CWFA. WENT WITH ETA/AVN BLEND FOR DETAILS.
ATMOSPHERIC COLUMN CONTINUES TO MOISTEN UP OVERNIGHT WITH
PRECIPITABLE WATERS APPROACHING 1.8 INCHES FOR THE WESTERN ZONES.
STRONG NEGATIVELY TILTED 500 MB TROF TO PASS THROUGH CENTRAL ND
OVERNIGHT WITH A SERIES OF MCS CLUSTERS TO MOVE THROUGH BY 12Z
MONDAY. DUE TO LOW FLASH FLOOD GUIDANCE VALUES IN THE DEVILS LAKE
BASIN...WILL ISSUE A FLASH FLOOD WATCH FOR THIS AREA TONIGHT. OTHER
ZONES ARE IN BETTER SHAPE WITH HIGHER THRESHOLDS. HOWEVER..THEY
WILL NEED TO BE CLOSELY MONITORED TONIGHT FOR POSSIBLE SLOW MOVING
TRAINING CELLS.

.MID TERM...WARM AND UNSTABLE PATTERN TO CONTINUE THROUGH MONDAY AND
TUESDAY. REMNANT CONVECTION FROM OVERNIGHT SHOULD PASS THROUGH
NORTHEAST THROUGH THE CWA BY MID MORNING. WEAK NVA OVER THE AREA
SHOULD ALLOW A BRIEF BREAK BEFORE THE NEXT WEAK SHORTWAVE MOVES IN
FOR THE 00Z-12Z TUESDAY TIME FRAME WITH ANOTHER ROUND OF SIGNIFICANT
CONVECTION FOR THE EASTERN SECTIONS OF THE CWA. RIDGE AXIS
RETROGRADES SLIGHTLY AND CONTINUES TO BUILD WITH A CORRESPONDING
RISE IN 850 MB TEMPERATURES THROUGH THE PERIOD. THUS...SFC HIGHS
SHOULD CONTINUE TO SLOWLY RISE INTO TUESDAY.

.EXTENDED...AMPLIFIED CENTRAL NORTH AMERICAN RIDGE CONTINUES TO
REMAIN IN PLACE FOR THE REMAINDER OF THE WORK WEEK. WENT WITH A
BLEND OF MRF/CANADIAN FOR DETAILS. ACTIVE PATTERN CONTINUES AS SHORT
WAVES CONTINUE TO BE EJECTED FROM MAJOR PACIFIC NW TROF. A SLIGHT
RESPITE FROM THE HEAT AND HUMIDITY IS ON TRACK FOR THE UPCOMING
WEEKEND AS THE RIDGE FINALLY GET KNOCKED DOWN AND COOLER CANADIAN
SFC HIGH PRESSURE BUILDS IN.

COORD WITH BIS...THANKS.

.FGF...FLASH FLOOD WATCH TONIGHT FOR THE DEVILS LAKE BAySIN.
       NDZ006-007-014-015-024

BRAMER

Nearby

Severe Thunderstorm Warnings in Minnesota, 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.