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Severe Potential: April 22-25, 2015


andyhb

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30% sig-hatched added for KY and TN in the D2, mentions of strong tornadoes and a possible upgrade in risk in future outlooks (basically what I expected considering the 00z guidance). A bit surprised that it didn't get extended further south into AL/MS, although I suppose storm coverage further south is still a question.

 

D1 has two 10% hatched tornado areas for KS and E TX/Arklatex.

That outlook for day 2 sounded mighty fine!

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Quite a bit of convection ongoing across Texas this morning. Several disorganized clusters of rain and storms.

Has me concerned and is always our worst enemy next to the cap we have in North Texas everytime these events come through. FWD doesn't seem concerned and it may actually work in our favor this time. The complex south of us seems to slowly be weakening, and per meso analysis on SPC site moisture flow doesn't look distrupted. Certainly not something I wanted to see but most models had this stuff on there and still ended up showing some nice components and activity coming together.

It is muggy here in DFW that's for sure, very Florida like outside.

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After handling the overnight convection fairly well, the HRRR is actually returning impressive CAPE in excess of 2000 J/kg up and down I-35 in Texas. Based on recent performance, I think I'll lean on it a bit more as I confirm what my target area will be and head out over the next hour or so.

 

Good luck, man. Be safe!

 

Going back up to KS, the 12Z HRRR has a nice pearl popping up over central KS at 22Z.

 

hrrrFLT_prec_radar_010.gif

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Well, I've still got my eyes on central Kansas, even though the 10% hatched tornado was dropped. I can't say that I disagree with that. We're not looking at strong instability or high dews like further south, but the latest HRRR and 4km NAM runs continue to show initiation along a narrow ribbon of instability near the triple point by mid-afternoon in central Kansas. While I think there's a good probability of at least a couple of tornadoes here, the residual cloud-cover and otherwise less-than-stellar environment may mitigate the risk for strong tornado(es). 

 

We'll see how satellite and observations trends look over the next few hours. The HRRR and NAM are actually initializing and progging both temperatures and dew-points fairly well, so it's not like we're getting grossly exaggerated instability forecasts.

 

Heading to Wichita for lunch and will probably head a bit NW of there, assuming there isn't much change in evolution.

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Yeah it's not clearing and in fact appears to be getting cloudier in the immediate area, but areas to the west aren't terrible and may have just enough. Other things are promising for severe, so I wonder if cloudiness today will be enough to stop much of it anyway.

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Here we go...

 

BULLETIN - EAS ACTIVATION REQUESTED  
TORNADO WARNING  
NATIONAL WEATHER SERVICE SAN ANGELO TX  
336 PM CDT FRI APR 24 2015  
 
THE NATIONAL WEATHER SERVICE IN SAN ANGELO HAS ISSUED A  
 
* TORNADO WARNING FOR...  
  SOUTHWESTERN CALLAHAN COUNTY IN WEST CENTRAL TEXAS...  
  NORTHWESTERN COLEMAN COUNTY IN WEST CENTRAL TEXAS...  
  NORTHEASTERN RUNNELS COUNTY IN WEST CENTRAL TEXAS...  
  SOUTHEASTERN TAYLOR COUNTY IN WEST CENTRAL TEXAS...  
 
* UNTIL 400 PM CDT  
 
* AT 334 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A  
  TORNADO WAS LOCATED NEAR CREWS...AND MOVING EAST AT 45 MPH.  
 
  HAZARD...TORNADO...TENNIS BALL SIZE HAIL AND 70 MPH WIND GUSTS.  
 
  SOURCE...RADAR INDICATED ROTATION.  
 
  IMPACT...FLYING DEBRIS WILL BE DANGEROUS TO THOSE CAUGHT WITHOUT  
           SHELTER. MOBILE HOMES WILL BE DAMAGED OR DESTROYED. DAMAGE  
           TO ROOFS...WINDOWS AND VEHICLES WILL OCCUR. TREE DAMAGE IS  
           LIKELY.  
 
* THIS DANGEROUS STORM WILL BE NEAR...  
  NOVICE AROUND 350 PM CDT.

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Uh oh...

 

... A Tornado Warning remains in effect for southwestern Callahan...
northwestern Coleman... southeastern Taylor and northeastern Runnels
counties until 400 PM CDT...

At 342 PM CDT... a severe thunderstorm capable of producing a large
and extremely dangerous tornado
was located 5 miles west of Novice...
and moving east at 45 mph.

This is a particularly dangerous situation.

Hazard... damaging tornado.

Source... radar indicated rotation.

Impact... you are in a life threatening situation. Flying debris will
         be deadly to those caught without shelter. Mobile homes will
         be destroyed. Considerable damage to homes... businesses and
         vehicles is likely and complete destruction possible.

The tornado will be near...
  Novice around 350 PM CDT.
  Silver Valley and Oplin around 355 PM CDT.

Other locations in the warning include Lake Coleman.

Precautionary/preparedness actions...

To repeat... a large... extremely dangerous and potentially deadly
tornado is developing.
To protect your life... take cover now. Move to
an interior room on the lowest floor of a sturdy building. Avoid
windows. If in a Mobile home... a vehicle or outdoors... move to the
closest substantial shelter and protect yourself from flying debris.
 

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