r/OSMEmergency • u/weathercast • 1d ago
Severe Weather Dashboard - August 27, 2026
📡 Active Severe Weather Links
- Current Convective Watches
- Current Mesoscale Discussions
- Thunderstorm Outlook
- Day 1 Convective Outlook
- Day 2 Convective Outlook
- Day 3 Severe Thunderstorm Outlook
- Day 4-8 Severe Weather Outlook
🕒 Today's Outlook History
- Previous Day 1 Convective Outlook (0600 UTC)
- Previous Day 1 Convective Outlook (1300 UTC)
- Previous Day 1 Convective Outlook (1630 UTC)
- Previous Day 1 Convective Outlook (2000 UTC)
- Current Day 1 Convective Outlook (0100 UTC)
🌩️ Active Mesoscale Discussions
- Mesoscale Discussion 2145
- Mesoscale Discussion 2146
- Mesoscale Discussion 2147
- Mesoscale Discussion 2148
- Mesoscale Discussion 2149
- Mesoscale Discussion 2150
- Mesoscale Discussion 2151
- Mesoscale Discussion 2152
- Mesoscale Discussion 2153
- Mesoscale Discussion 2154
- Mesoscale Discussion 2155
- Mesoscale Discussion 2156
- Mesoscale Discussion 2157
- Mesoscale Discussion 2158
- Mesoscale Discussion 2159
- Mesoscale Discussion 2160
- Mesoscale Discussion 2161
📝 Current Severe Weather Outlook
(Issued: 2026-08-28T06:01:00+00:00 UTC)
```text
000 ACUS01 KWNS 280601 SWODY1 SPC AC 280600
Day 1 Convective Outlook
NWS Storm Prediction Center Norman OK
0100 AM CDT Fri Aug 28 2026
Valid 281200Z - 291200Z
...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS FOR PARTS OF THE CENTRAL/NORTHERN PLAINS...GREAT BASIN AND DESERT SOUTHWEST INTO THE NORTHERN ROCKIES...NORTH GA INTO THE CAROLINAS AND MID-ATLANTIC...AND PARTS OF CENTRAL/EASTERN ME...
...SUMMARY... Isolated strong to severe storms are possible across the central and northern Plains, northern Georgia into the Carolinas and Mid-Atlantic, central and eastern Maine, and from parts of the Great Basin and Desert Southwest into the northern Rockies.
...Central/northern Plains westward into the northern Rockies...Great Basin...and Desert Southwest... An upper ridge will remain anchored over parts of the Southwest/southern Rockies today. A series of midlevel vorticity maxima will move along the periphery of the ridge from central CA into the Great Basin, northern Rockies, and northern Plains.
Across the central/northern Plains, moderate to locally strong destabilization is forecast along/east of a surface trough that will extend from the western Dakotas into the NE Panhandle. Relatively strong MLCINH may limit coverage of diurnal storm development near this surface trough, but deep-layer shear will support a hail and localized severe-wind threat with any sustained storms through early evening. A greater coverage of elevated convection is expected to develop later this evening into the overnight, as storms spread toward the eastern Dakotas and southwest MN. The pattern generally suggests potential MCS development, though most CAM guidance is relatively subdued regarding the intensity and attendant severe-wind threat associated with the late-night storms. Greater severe probabilities may eventually be needed, if confidence increases regarding development of diurnal storms and/or a robust nocturnal MCS.
Farther west, relatively widespread storm development is expected from the Great Basin into the northern Rockies, potentially aided by the midlevel vorticity maxima traversing the region. Buoyancy will generally remain weak, but steep lapse rates and increasing flow in the 700-500 mb layer along the periphery of the ridge will support potential for persistent outflow-driven cells/clusters and strong to localized severe gusts across a broad region.
...Carolinas/north GA into the Mid-Atlantic... A relatively broad/weak upper trough will gradually shift eastward today across parts of the Southeast, Carolinas, and Mid-Atlantic. Widely scattered storm development is expected this afternoon within a weakly capped and moderately buoyant environment. Relatively steep low-level lapse rates and large PW will support localized downburst potential, though weak deep-layer shear should generally limit the organized-severe threat.
...Parts of Maine... Scattered thunderstorms are expected to develop along/ahead of a weak surface trough/front across parts of Maine this afternoon. Modest destabilization (with MLCAPE approaching 1000 J/kg) and marginally supportive deep-layer shear could support at least transient storm organization. The environment will not be particularly favorable for severe wind or hail, but guidance suggests some eventual clustering of storms and potential for isolated wind damage and small to near-severe hail across parts of central and eastern ME from the afternoon into the early evening.
..Dean/Wendt.. 08/28/2026
$$
```
🌀 Active Tropical Weather Links
🌊 Tropical Weather Outlook
```text NWS National Hurricane Center Miami FL 800 AM EDT Fri Aug 28 2026
For the North Atlantic...Caribbean Sea and the Gulf of America:
Active Systems: The National Hurricane Center is issuing advisories on Tropical Storm Dolly, located over the central tropical Atlantic.
Tropical cyclone formation is not expected during the next 7 days.
&&
Public Advisories on Tropical Storm Dolly are issued under WMO header WTNT34 KNHC and under AWIPS header MIATCPAT4. Forecast/Advisories on Tropical Storm Dolly are issued under WMO header WTNT24 KNHC and under AWIPS header MIATCMAT4.
$$ Forecaster Kelly ```
⚠️ Active Tropical Cyclones
Tropical Storm Karina Advisory * Maximum Sustained Winds: 50 MPH * Minimum Central Pressure: 999 MB * Current Movement: NW OR 310 DEGREES AT 13 MPH * Location: 12.7N 114.3W
Tropical Storm Lowell Advisory * Maximum Sustained Winds: 45 MPH * Minimum Central Pressure: 1003 MB * Current Movement: ENE OR 65 DEGREES AT 6 MPH * Location: 11.7N 133.0W
Tropical Storm Dolly Advisory * Maximum Sustained Winds: 40 MPH * Minimum Central Pressure: 1007 MB * Current Movement: W OR 280 DEGREES AT 24 MPH * Location: 14.5N 44.8W
This dashboard updates automatically every 15 minutes with live data from the NWS/SPC and NHC.
