Alert archive / Minnesota / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 125, NWS Grand Forks, ND

July 7, 2000Polk County, Minnesota

NWS Grand Forks, ND issued this severe thunderstorm warning at Jul 7, 2000, 11:06 AM CDT for Polk County, Minnesota. It was in force for 29 min. 1 report came from 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, with what was reported inside it.

The facts

Issued
Jul 7, 2000, 11:06 AM CDT (16:06 UTC)
Expired
Jul 7, 2000, 11:35 AM CDT
In force
29 min
Issued by
NWS Grand Forks, ND
Area
Whole counties; the outline is the Mesonet’s reconstruction

County Polk County, MN

The radar

The Fargo/Grand Forks radar (KMVX), 72 km from the middle of the area, began a volume at 16:05 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.

What was reported inside it

TimeReportWhereRemark
Jul 7, 11:10 AM CDTHail 0.88Tabor, MN

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 nearest sounding before it

International Fa, MN (KINL), launched 12:00Z, 4.1 hours before the alert went out and 266 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-pSkew-T log-p diagram, International Fa, MN at 12:00Z on 2000-07-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, International Fa, MN at 12:00Z on 2000-07-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 172 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
911 m above ground
0-6 km bulk shear
31 kt
0-1 km storm-relative helicity
172 m²/s²
0-3 km storm-relative helicity
229 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 KFGF 071606
SVRFAR
MNC119-071636-
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE EASTERN ND-GRAND FORKS
1106 AM CDT FRI JUL 7 2000

THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHWESTERN POLK COUNTY IN NORTHWEST MINNESOTA

* UNTIL 1135 AM CDT

* AT 1100 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 9 MILES WEST OF TABOR...OR ABOUT 10 MILES NORTH
  OF GRAND FORKS...MOVEMENT WAS TO THE EAST AT 45 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  TABOR AT 1110 AM CDT...
  SHERACK AT 1115 AM CDT...
  ANGUS AT 1120 AM CDT...

REMEMBER SEVERE THUNDERSTO4RMS CAN AND OCCASIONALLY DO PRODUCE
TORNADOES WITH LITTLE OR NO ADVANCE WARNING.

LAT...LON 4816 9704 4799 9701 4797 9651 4815 9654

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 7, 10:30 AM CDT, 36 minutes earlier.

Area forecast discussion, Jul 7, 10:30 AM CDT, 36 minutes before
FORECAST DISCUSSION FOR EASTERN NORTH DAKOTA AND NORTHWEST MINNESOTA
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
1030 AM CDT FRI JUL 7 2000

-14C TEMP REPORTED AT 500 HPA ACRS SRN MAN WHICH IS COOLER THAN
MODELS HAVE FCST. SAME AT 700 AND 850 HPA. COOLER AIR THAN XPCD IS
CREATING TSRA ACRS CWFA. 88D HAS TSRA OVR GFK COUNTY AND BELTRAMI
MOVG E. WL KEEP CHC TSRA FOR TDY. WL CHECK ZONES.

.FGF...NONE.
HOPPES

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 7, 2:49 AM CDTSevere Thunderstorm WarningFGFClay31 min
Jul 7, 10:26 AM CDTSevere Thunderstorm WarningFGFBeltrami29 min
Jul 7, 11:35 AM CDTSevere Thunderstorm WarningFGFPennington, Red Lake45 min
Jul 7, 12:19 PM CDTSevere Thunderstorm WarningFGFBeltrami, Clearwater, Pennington31 min
Jul 7, 12:30 PM CDTFlash Flood WarningFGFPennington, Polk, Red Lake4 hr
Jul 7, 12:51 PM CDTSevere Thunderstorm WarningFGFPolk29 min
Jul 7, 1:19 PM CDTSevere Thunderstorm WarningFGFPolk46 min
Jul 7, 5:23 PM CDTSevere Thunderstorm WarningFGFWilkin32 min
Jul 7, 5:32 PM CDTSevere Thunderstorm WarningFGFOtter Tail43 min
Jul 7, 6:10 PM CDTSevere Thunderstorm WarningFGFGrant30 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 2000Every 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.