Alert archive / Minnesota / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 367, NWS Grand Forks, ND

August 26, 2001Red Lake County, Minnesota

NWS Grand Forks, ND issued this severe thunderstorm warning at Aug 26, 2001, 6:42 PM CDT for Red Lake County, Minnesota. It was in force for 33 min. 2 reports 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
Aug 26, 2001, 6:42 PM CDT (23:42 UTC)
Expired
Aug 26, 2001, 7:15 PM CDT
In force
33 min
Issued by
NWS Grand Forks, ND
Area
Whole counties; the outline is the Mesonet’s reconstruction

County Red Lake County, MN

What was reported inside it

TimeReportWhereRemark
Aug 26, 6:50 PM CDTHail 0.88Plummer, MN
Aug 26, 7:00 PM CDTHail 0.75Brooks, 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, 11.7 hours before the alert went out and 219 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 2001-08-26Temperature 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 2001-08-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -24 square meters per square second.19395878Sfc1 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
2826 m above ground
0-6 km bulk shear
51 kt
0-1 km storm-relative helicity
-24 m²/s²
0-3 km storm-relative helicity
71 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.

473 
WUUS53 KFGF 262342
SVRFAR
MNC125-270015-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE EASTERN ND-GRAND FORKS
642 PM CDT SUN AUG 26 2001

THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...

  CENTRAL RED LAKE COUNTY IN NORTHWEST MINNESOTA.

* UNTIL 715 PM CDT.

* AT 638 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 3 MILES SOUTHWEST OF PLUMMER...OR ABOUT 16
  MILES SOUTH OF THIEF RIVER FALLS...MOVEMENT WAS TO THE SOUTHEAST AT
  25 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...

  BROOKS AT 655 PM.

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

LAT...LON 4796 9605 4789 9626 4777 9614 4778 9584


$$

55

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 Aug 26, 3:21 PM CDT, 3 hours 21 minutes earlier.

Area forecast discussion, Aug 26, 3:21 PM CDT, 3 hours 21 minutes before
FORECAST DISCUSSION FOR EASTERN NORTH DAKOTA AND NORTHWEST MINNESOTA
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
321 PM CDT SUN AUG 26 2001

...FORECAST PROBLEM TONIGHT IS SVR AND HEAVY RAIN POTENTIAL...

.CURRENT CONDITIONS...18Z SFC ANALYSIS SHOWED LOW CENTER OVER ABR
WITH WARM FRONT EXTENDING TO VICINITY OF AXN. INVERTED TROF HAS
JUST PUSHED EAST OF DVL AND JMS AND APPEARS TO HAVE SLOWED DOWN.
BEST 3 HOUR PRESSURE FALLS WOULD HAVE LOW CENTER TRACK INTO FFM
VICINITY BY 00Z. SATELLITE AND RADAR IMAGERY SHOWING TCU LINE
FORMING ALONG INVERTED TROF ATTM.

.SHORT TERM...TSTMS EXPECTED TO FIRE ALONG INVERTED TROF WITH A
SPLIT SVR REGIME. LARGE HAIL IS LIKELY ALONG THE INTERNATIONAL
BORDER WHERE FREEZING LEVELS HAVE COME DOWN SLIGHTLY. A TORNADIC
THREAT STILL REMAINS IN THE VICINITY OF THE WARM FRONT ALONG THE
SOUTHERN TIER OF THE FA WHERE GOOD SPEED AND DIRECTIONAL SHEAR HAVE
PRODUCED HELICITY VALUES IN THE 300-500 M2/S2 RANGE. AS THE TROF
MOVES EASTWARD TONIGHT...THE SVR THREAT SHOULD END DURING THE
03Z-05Z TIME FRAME. HEAVY RAINFALL OVER SATURATED GROUND REMAINS A
THREAT FOR THE SOUTHERN ZONES. DUE TO THE TROF MOVEMENT...WILL TRIM
FAR WESTERN ZONES FROM THE WATCH AND END THE WATCH AT 04Z. RAPIDLY
FALLING SFC DEW POINTS ARE AGAIN ENTERING CENTRAL ND AND SHOULD
SPREAD EASTWARD OVERNIGHT.

.MID TERM...QUIET PERIOD EXPECTED THROUGH TUESDAY AS HIGH PRESSURE
DOMINATES THE ENTIRE NORTHERN PLAINS. 850 MB COLD ADVECTION IS NOT
REAL STRONG OVER THE FA...THUS TEMPERATURES THROUGH THE PERIOD SHOULD
REMAIN NEAR NORMAL. RETURN FLOW BEGINS TO INCREASE ON TUESDAY AHEAD
OF STRONGER COLD FRONT PUSHING DOWN TUESDAY NIGHT. SIGNIFICANT TSTM
EVENT EXPECTED WITH FROPA AS IT MOVES THROUGH.

.EXTENDED...
MODELS AGAIN HAVE GOOD CONTINUITY AND ARE CONSISTENT WITH OVERALL
DETAILS. FRONTAL PASSAGE STILL LOOKS ON TARGET FOR TUE
NIGHT/WED...ALONG WITH ANOTHER ROUND OF CONVECTION.
THEREAFTER...HIGH PRESSURE SHOULD BUILD IN AS TEMPS COOL TO NEAR OR
SLIGHTLY BELOW NORMAL. BY NEXT WEEKEND...HIGH SHIFTS EAST UNDER REX
TYPE BLOCK CONFIGURATION...AS TEMPS WARM TO NEAR OR SLIGHTLY ABOVE
NORMAL WITH DRY WEATHER PERSISTING.

COORD WITH SPC...THANKS.

.FGF...FLASH FLOOD WATCH THIS EVENING FOR NDZ030-039-053 AND
       MNZ002-003-027>032-040

BRAMER/KELLENBENZ

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 26, 9:14 AM CDTSevere Thunderstorm WarningFGFWilkin46 min
Aug 26, 9:18 AM CDTSevere Thunderstorm WarningFGFClay, Norman42 min
Aug 26, 4:56 PM CDTSevere Thunderstorm WarningFGFMarshall49 min
Aug 26, 5:50 PM CDTSevere Thunderstorm WarningFGFPennington40 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 2001Every 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.