6/23/05 TALK: Northern Plains

[Edward Ballou]

MD issued for most of eastern ND. WW is soon to be issued. From the SPC:

GIVEN STRONG UPDRAFTS ARE OCCURRING...LOCAL WEAKENING OF CAP INVOF THIS CONVECTION MAY ALLOW BOUNDARY LAYER PARCELS TO BECOME ENTRAINED INTO THE UPDRAFTS. IF THIS OCCURS...POTENTIALLY MORE ROBUST ACTIVITY IS ANTICIPATED AS LOWER-MID 70S SFC DEW POINTS ARE OBSERVED DOWNSTREAM.

Tornado warning is currently going up by appropriately named: Devil's Lake.

 

[Jeff Miller]

wow

8 counties currently under tornado warnings in NE North Dakota. Latest radar shows scattered severe thunderstorms with strong rotation in the warned areas.... some with very large hail.

 

[Edward Ballou]

CAP appears to be weakening a little bit across western SD...hopefully as it comes off that boundary, it'll explode.

That stuff up in ND is crazy. For a moment, the overshooting tops resembled a smily face.


EDIT: Looks like we need to change the title of this thread. MD just issued for CO and another one for NM/AZ.

 

[Scott Olson]

AT 401 PM CDT...WEATHER SPOTTERS REPORTED A LINE OF STORMS PRODUCING
TORNADOES.

This is the southernmost line that has already had a confirmed tornado.

 

[Edward Ballou]

YES! MD issued for middle part of SD, across most of the middle of NE and down to CO and KS.

WELL-MIXED BOUNDARY LAYER AND STEEP MID LEVEL LAPSE RATES WILL SUPPORT STRONG DOWNDRAFT POTENTIAL...WITH LARGE HAIL A POSSIBILITY AS WELL. RELATIVELY MORE SUSTAINED ACTIVITY MAY TEND TO EVOLVE ACROSS SD/FAR NRN NEB AMIDST STRONGER INSTABILITY/VERTICAL SHEAR. WATCH MAY BE NEEDED SOON.

 

[mikegeukes]

Not pertaining to the Plains, here is a interesting LSR
from NWS Flagstaff, AZ, wonder if any petrified trees
were damage, LOL.

0510 PM TORNADO PETRIFIED FOREST N.P. V 34.82N 109.86W
06/23/2005 NAVAJO AZ LAW ENFORCEMENT

REPORTED NEAR I-40 MP 308 BY NAVAJO S.O.

Mike