SPC Feb 26, 2025 0100 UTC Day 1 Convective Outlook
SPC 0100Z Day 1 Outlook Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0625 PM CST Tue Feb 25 2025 Valid 260100Z - 261200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... A few isolated thunderstorms are possible across the northern/central Plains this evening. Severe thunderstorms are not anticipated. ...01z Update... Modifications were made to thunder to account for ongoing thunderstorm activity across South Dakota and Nebraska and to remove thunder chances across Colorado. As a shortwave impulse continues eastward this evening, cooling aloft and steep lapse rates will allow for sufficient instability for a few additional thunderstorms to develop
SPC Feb 25, 2025 1300 UTC Day 1 Convective Outlook
SPC 1300Z Day 1 Outlook Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0632 AM CST Tue Feb 25 2025 Valid 251300Z - 261200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Isolated thunderstorms are possible from the northern and central Plains today into the Mid Mississippi Valley overnight. A few isolated thunderstorms are possible across western Colorado as well. Severe thunderstorms are not anticipated. ...Synopsis and Discussion... Early morning satellite imagery reveals an active northern stream, with one shortwave trough progressing through the Upper Great Lakes/OH Valley and another moving into the northern Rockies, downstream of a cyclone moving
SPC Feb 25, 2025 Day 4-8 Severe Weather Outlook
Day 4-8 Outlook Day 4-8 Convective Outlook NWS Storm Prediction Center Norman OK 0355 AM CST Tue Feb 25 2025 Valid 281200Z - 051200Z ...DISCUSSION... A dry, continental airmass across the eastern CONUS and northern Gulf will keep severe weather potential low on D4/Fri and D5/Sat. By D6/Sun, as the mid-level low starts to translate into the southern Plains, robust low-level moisture advection is expected to occur ahead of a developing surface cyclone. After this time, severe weather may be possible any day through early next week. In general, the overall pattern suggests moisture returning to the southern Plains and
Hydrologic Outlook issued February 24 at 11:43AM MST by NWS Riverton WY
ESFRIW Low elevation snowpack of around 2 to 8 inches exists across much of the northern portion of the Bighorn Basin including mountain foothills. This snowpack contains an estimated 1 to 3 inches of Snow Water Equivalent (SWE). Temperatures are expected to be in mid-30s to around 40 degrees Monday through Wednesday. Warmer temperatures occur Thursday through Sunday (Feb 27 - Mar 2). The upcoming warm temperatures, combined with the low elevation snowpack, could result in melting and injection into local rivers and streams. Ice break up on the Bighorn and Nowood Rivers is possible as well, and could lead
Hydrologic Outlook issued February 24 at 8:43AM MST by NWS Billings MT
ESFBYZ A deep and wet snowpack exists across the forecast area. Up to an inch of snow water has melted out of this snowpack over the past few days. This still leaves 1 to 3 inches (more in some areas such as the Wolf Mountains) of water remaining. Continued warm temperatures forecast over the coming days will accelerate snowmelt, releasing this water. With the ground still frozen, water will not be able to soak in and will run off. Water flowing overland and accumulating in low lying areas may result in localized flooding. Water flowing into creeks and streams will
Hydrologic Outlook issued February 24 at 1:55PM MST by NWS Pocatello ID
ESFPIH Temperatures tonight will remain above freezing, continuing the melt cycle into Tuesday. Low and mid elevation snow melt and run off will continue. Increased runoff on top of frozen or saturated ground may lead to ponding of water or sheet flooding in low lying or poor drainage areas, along with rises on small streams and creeks. Locations most prone to rapid snowmelt include areas below 6000 ft across the Eastern Magic Valley, Lower and Upper Snake Plain, and South Hills, where snow pack still exists. A slight cooling trend is expected to begin Tuesday and continue through the remainder
SPC Feb 25, 2025 0100 UTC Day 1 Convective Outlook
SPC 0100Z Day 1 Outlook Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0644 PM CST Mon Feb 24 2025 Valid 250100Z - 251200Z ...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS ACROSS PARTS OF THE PACIFIC NORTHWEST...AND OVER SOUTH FLORIDA... ...SUMMARY... Scattered storms remain possible across the Florida Keys/far southern Florida this evening. Localized damaging gusts or a brief tornado may occur. Isolated strong wind gusts are also possible across parts of the Pacific Northwest. ...01z Update... Strong 12hr mid-level height falls are spreading across the Pacific Northwest in response to a progressive trough that will advance
SPC Feb 24, 2025 1300 UTC Day 1 Convective Outlook
SPC 1300Z Day 1 Outlook Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0630 AM CST Mon Feb 24 2025 Valid 241300Z - 251200Z ...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS OVER FAR SOUTHERN FL INCLUDING THE KEYS...AND OVER PARTS OF EASTERN OR AND WA... ...SUMMARY... Scattered strong storms will be possible across the Florida Keys and into far southern Florida from late afternoon through evening. Localized damaging gusts or a brief tornado may occur. Isolated strong winds are also expected from the Oregon Cascades into southeast Washington. ...Far Southern FL and the FL Keys... Shortwave trough
SPC Feb 24, 2025 Day 4-8 Severe Weather Outlook
Day 4-8 Outlook Day 4-8 Convective Outlook NWS Storm Prediction Center Norman OK 0354 AM CST Mon Feb 24 2025 Valid 271200Z - 041200Z ...DISCUSSION... A strong mid-level trough will amplify across the East Coast on Thursday with a strong cold front sharpening along the Appalachians and moving into the Atlantic. Given the persistent continental airmass preceding the cold front with minimal moisture recovery, instablity should be quite weak. However, forecast soundings show some weak instability which could promote a few lightning flashes across the Carolinas and vicinity. In the wake of the cold front, dry air will remain across
Hydrologic Outlook issued February 23 at 1:34PM MST by NWS Riverton WY
ESFRIW Low elevation snowpack of around 4 to 10 inches exists across much of the northern portion of the Bighorn Basin including Greybull, Lovell, Powell, and Cody. This snowpack contains an estimated 1 to 3 inches of Snow Water Equivalent (SWE). Temperatures beginning are expected to climb into the low 40s to near 50 degrees each afternoon through next weekend. Warmest temperatures look to occur Friday through Sunday (Feb 28 - Mar 2). The warm temperatures, combined with the significant low elevation snowpack, could result in significant melting and injection into local rivers and streams. Ice break up on the