Severe thunderstorm watch issued for parts of South Dakota, Wyoming and Nebraska

 

UPDATE: A severe thunderstorm watch has been issued to parts of Nebraska, South Dakota and Wyoming.

The watch is in effect until 10 p.m. Wednesday. Tornadoes and up to lime sized hail are possible in some areas.

Additionally, wind gusts could reach up to 80 mph.

Stay tuned to NewsCenter1 for updates.


  • To start, should get a decent break this morning and early afternoon, besides a few pop ups here and there
  • Temperatures could reach the 80s, depending on the amount of sunshine that’s allowed through the morning hours

  • Right to the point though, we have yet another late afternoon/evening slight risk (2/5) for strong to severe weather
  • This area stretches from Central Wyoming up through the Black Hills, then covering most of South Dakota stretching Eastward

  • some of the same impacts that we’re used to, along with a few unique ones
  • Hail could be medium to even large sized, given the large amounts of moisture (jet fuel) available for storms to feed on, particularly in the West River plains of South Dakota
  • Straight line winds could become a problem, particularly if storms begin to “bow” out and form a dangerous line of thunderstorms
  • Flooding could become a distinct concern, given the conditions that have set up over the last week

  • Those conditions include areas that have received 2-3″ of rain just over the last 24 hours
  • The soil cannot handle more of the same, so large amounts of runoff could lead to quickly rising waters

  • With this in mind, a Flash Flood Watch has been issued for areas North of Rapid City and the Black Hills. This also includes portions of Northeastern Wyoming
  • Torrential rainfall can quickly turn areas that were safe just moments ago into a dangerous situation. Be wary of flood prone areas and do NOT drive over flooded roadways

  • Moving forward, here are some of the rainfall estimates through the 4th of July into Friday morning
  • It’s not necessarily that Hill City will specifically receive 1.5″ of rainfall, its more the point that any of these areas could receive that amount or more.

  • Timing out the rest of today, spotty thunderstorms will start popping up after the 3 PM hour, but should at least remain isolated for the time being
  • Wyoming will see action develop along the I-25 corridor and head Northeast during this time

  • By 7 PM, strong thunderstorms will start covering portions of our area
  • Several rounds of thunderstorms could train over the same area through the afternoon and evening hours

  • Storms, much like this morning, could survive overnight and still cause a racket going into Thursday morning
  • By noon on the 4th of July, thunderstorms will already be getting their act together and begin pushing East towards the Black Hills

  • By the afternoon Thursday, storms are gathering in the Black Hills, using their elevation as an anchor point to ruin BBQ’s along the foothills and creating dangerous lightning fields
  • Storms continue to pepper other areas outside the hills, particularly in Wyoming and to the South of the Black Hills

  • After the sun goes down, strong storms are likely to cross into our region and could further interrupt 4th of July plans
  • Although a few breaks are possible in between these storm events, it’s better to have a contingency plan

  • The good news is that temperatures should stay rather mild, perhaps getting to the mid 70’s by the afternoon
  • Storms will be on the increase by 3 pm, so it may be wise to get your BBQ done earlier in the day when storm chances are less likely

  • Friday and Saturday feature more chances for afternoon and evening showers and thunderstorms, some of which could be strong
  • Sunday will be our first real day of expected drier conditions, with temperatures reaching the 80s and sunshine

This week isn’t a total washout, but plan on having at least some indoor activities this week. If you’re travelling, make sure that if you encounter a flooded roadway, TURN AROUND. It’s impossible to know the integrity of the road underneath the water until you are already driving on it, the road could give way at that very moment. Also, take lightning seriously: if you can hear thunder, you are close enough to be struck. Although beautiful, these lightning shows can be dangerous if the necessary precautions are not taken. Not to sound too preachy, but we just want everyone to safely get to and from their holiday activities. Be safe out there everyone! – Brant

 

 

Categories: Local News, Weather Daily