Jun 8, 2020 0100 UTC Day 1 Convective Outlook
Updated: Mon Jun 8 00:55:27 UTC 2020 (20200608 0100Z Day 1 shapefile | 20200608 0100Z Day 1 KML)
Probabilistic to Categorical Outlook Conversion Table
Categorical Graphic
20200608 0100 UTC Day 1 Outlook Graphic
Day 1 Risk Area (sq. mi.) Area Pop. Some Larger Population Centers in Risk Area
ENHANCED 62,569 619,865 Fargo, ND...Grand Forks, ND...Moorhead, MN...Aberdeen, SD...West Fargo, ND...
SLIGHT 114,254 3,843,129 New Orleans, LA...Mobile, AL...Metairie, LA...Gulfport, MS...Kenner, LA...
MARGINAL 226,738 4,183,654 Baton Rouge, LA...Jackson, MS...Billings, MT...Duluth, MN...St. Cloud, MN...
Probabilistic Tornado Graphic
20200608 0100 UTC Day 1 Tornado Probabilities Graphic
Probability of a tornado within 25 miles of a point.
Hatched Area: 10% or greater probability of EF2 - EF5 tornadoes within 25 miles of a point.
Day 1 Tornado Risk Area (sq. mi.) Area Pop. Some Larger Population Centers in Risk Area
SIG SEVERE 10,109 154,485 Grand Forks, ND...
10 % 10,293 154,170 Grand Forks, ND...
5 % 60,371 3,530,389 New Orleans, LA...Mobile, AL...Metairie, LA...Fargo, ND...Gulfport, MS...
2 % 120,359 2,850,985 Baton Rouge, LA...Jackson, MS...Rapid City, SD...Bismarck, ND...Pensacola, FL...
Probabilistic Damaging Wind Graphic
20200608 0100 UTC Day 1 Damaging Wind Probabilities Graphic
Probability of damaging thunderstorm winds or wind gusts of 50 knots or higher within 25 miles of a point.
Hatched Area: 10% of greater probability of wind gusts 65 knots or greater within 25 miles of a point.
Day 1 Wind Risk Area (sq. mi.) Area Pop. Some Larger Population Centers in Risk Area
SIG SEVERE 49,828 560,308 Fargo, ND...Grand Forks, ND...Moorhead, MN...Aberdeen, SD...West Fargo, ND...
30 % 63,382 622,021 Fargo, ND...Grand Forks, ND...Moorhead, MN...Aberdeen, SD...West Fargo, ND...
15 % 81,741 684,000 Rapid City, SD...Bismarck, ND...Watertown, SD...Mandan, ND...Hibbing, MN...
5 % 257,112 7,260,359 New Orleans, LA...Mobile, AL...Jackson, MS...Metairie, LA...Billings, MT...
Probabilistic Large Hail Graphic
20200608 0100 UTC Day 1 Large Hail Probabilities Graphic
Probability of hail 1" or larger within 25 miles of a point.
Hatched Area: 10% or greater probability of hail 2" or larger within 25 miles of a point.
Day 1 Hail Risk Area (sq. mi.) Area Pop. Some Larger Population Centers in Risk Area
SIG SEVERE 47,642 532,549 Fargo, ND...Grand Forks, ND...Moorhead, MN...Aberdeen, SD...West Fargo, ND...
30 % 54,461 565,249 Fargo, ND...Grand Forks, ND...Moorhead, MN...Aberdeen, SD...West Fargo, ND...
15 % 88,269 726,404 Rapid City, SD...Bismarck, ND...Watertown, SD...Mandan, ND...Fergus Falls, MN...
5 % 120,340 1,589,891 Billings, MT...Duluth, MN...St. Cloud, MN...Minot, ND...Superior, WI...
   SPC AC 080055

   Day 1 Convective Outlook  
   NWS Storm Prediction Center Norman OK
   0755 PM CDT Sun Jun 07 2020

   Valid 080100Z - 081200Z

   ...THERE IS AN ENHANCED RISK OF SEVERE THUNDERSTORMS FROM CENTRAL
   SOUTH DAKOTA INTO EASTERN NORTH DAKOTA AND NORTHWEST MINNESOTA...

   ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS OVER A PORTION OF
   THE NORTHERN PLAINS AND UPPER MISSISSIPPI VALLEY AS WELL AS THE
   CENTRAL GULF COAST REGION...

   ...SUMMARY...
   Severe thunderstorms capable of producing large hail, damaging
   gusts, and a few tornadoes will persist this evening from central
   South Dakota into eastern North Dakota and northwestern Minnesota.  
   Isolated tornadoes remain possible along the north central Gulf
   coast.

   ...Central through eastern Dakotas...

   Numerous strong to severe storms will continue developing this
   evening through the central and eastern Dakotas into northwest MN.
   The atmosphere remains moderately unstable in this region with steep
   (7.5 - 8 C/km) mid level lapse rates and 2000-3000 J/kg MLCAPE. VWP
   data show unidirectional wind profiles, but with 45+ kt effective
   bulk shear supportive of organized storms including supercells.
   There may be a tendency for some storms to evolve into clusters with
   mixed storm modes. Large hail, damaging wind appear likely and a few
   tornadoes are possible. Greatest tornado threat will persist through
   mid evening from eastern ND into northwest MN where 0-1 km hodograph
   size is maximized in association with a strengthening low-level jet
   and backed surface winds near a warm front.

   ...Southeast Louisiana through southern Mississippi and southwest
   Alabama...

   Convection within outer rain bands of Cristobal continues spreading
   inland along the central Gulf Coast region. VWP data from Mobile
   show large low-level hodographs northeast of the center. Cristobal
   is forecast by the NHC to continue on a north northwesterly track
   tonight through southeast LA and into southwest MS. Threat for a
   couple of brief tornadoes will persist into the overnight as this
   feature advances inland.

   ..Dial.. 06/08/2020

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   NOTE: THE NEXT DAY 1 OUTLOOK IS SCHEDULED BY 0600Z