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Severe weather analysis

Observations and analyses of the atmosphere now, from NWS, WPC and SPC. Not a forecast and not a warning: for those, see the Briefing and the Live tracker.

SPC soundings: feeds current

SPC soundings: Feed current; checked .

Checked means retrieved, not newly issued. Each graphic retains its issue, observation, initialization or valid time. Site publishing status is separate.

Soundings: what weather balloons measured

SPC’s skew-T diagram and hodograph of the sounding at Caribou, ME (CAR), 00Z. Its levels are in the table below.
Observed Sounding at Caribou, ME (CAR), for (4 h 29 min ago). SPC’s graphic; the values in its panels (CAPE, shear, the indices) are SPC’s computations from these levels. Data: NOAA/SPC.

A balloon launched about an hour before the time named, measuring as it rose and drifted with the wind: the atmosphere above one place, at one time. Model soundings, which are forecasts, are not shown here.

The levels this sounding was drawn from (59)
Caribou, ME (CAR): the surface first, then up through the atmosphere. Temperature and dew point in °C, as measured.
PressureHeightTemperatureDew pointWind
974 mb191 m8.27.8180° 3 kt
961 mb305 m7.87.2170° 18 kt
934 mb534 m7.26.8—
925 mb613 m6.86.4195° 34 kt
892 mb914 m7.77.5215° 39 kt
876 mb1062 m8.48.4—
860 mb1219 m7.97.9245° 42 kt
850 mb1311 m7.67.6250° 40 kt
828 mb1524 m6.76.6250° 41 kt
798 mb1829 m5.45.2255° 47 kt
779 mb2028 m4.64.3—
769 mb2134 m3.83.1250° 58 kt
741 mb2438 m1.5-0.2250° 70 kt
722 mb2643 m-0.1-2.4—
710 mb2777 m-0.1-3.2—
700 mb2891 m-0.1-3.7255° 65 kt
686 mb3048 m-0.5-3.9255° 66 kt
668 mb3266 m0.2-4.2—
636 mb3658 m-1.3-8.2250° 64 kt
612 mb3962 m-2.5-11.5250° 64 kt
589 mb4267 m-4.5-10.2250° 68 kt
566 mb4572 m-6.6-8.8250° 72 kt
547 mb4845 m-7.3-7.7—
524 mb5182 m-9.3-9.5250° 94 kt
504 mb5486 m-11.1-11.2250° 91 kt
500 mb5540 m-11.5-11.6250° 92 kt
477 mb5899 m-13.9-14.7—
465 mb6096 m-15.1-16.0245° 95 kt
450 mb6338 m-16.5-19.2—
428 mb6706 m-19.3-20.8250° 93 kt
411 mb7010 m-21.6-23.4250° 99 kt
400 mb7210 m-23.5-25.3250° 99 kt
378 mb7620 m-26.8-31.4245° 97 kt
367 mb7833 m-28.5-34.5—
347 mb8230 m-29.7-36.7245° 105 kt
335 mb8484 m-30.5-35.5—
319 mb8839 m-32.8-39.0245° 110 kt
306 mb9121 m-33.7-41.7—
300 mb9260 m-34.1-43.1250° 115 kt
290 mb9498 m-35.5-44.5—
280 mb9754 m-37.4-45.2250° 113 kt
267 mb10071 m-39.9-44.9—
256 mb10363 m-41.6-49.2250° 114 kt
250 mb10520 m-42.5-51.5250° 126 kt
237 mb10878 m-43.9-52.9—
225 mb11224 m-45.7-54.7—
213 mb11582 m-47.0-56.0255° 144 kt
201 mb11967 m-49.1-58.1—
200 mb12000 m-49.3-59.3255° 138 kt
190 mb12335 m-50.5-59.5—
179 mb12721 m-53.3-62.3—
169 mb13088 m-56.1-65.1—
154 mb13675 m-58.3-66.3—
150 mb13840 m-58.7-66.7255° 99 kt
139 mb14326 m-59.5-67.5255° 94 kt
126 mb14935 m-62.0-69.6255° 86 kt
115 mb15489 m-65.1-73.1—
105 mb16049 m-62.5-73.5—
100 mb16350 m-62.5-74.5250° 61 kt
Every station with a sounding (78)

SPC observed soundings checked · Data: NOAA/SPC

Montana briefing

Not an official warning service. Warnings and watches are the National Weather Service’s, outlooks and reports the Storm Prediction Center’s and the Weather Prediction Center’s (Data: NOAA/NWS, NOAA/SPC, NOAA/WPC). When a warning is issued for you, act on it, and use weather.gov or a NOAA Weather Radio for where you are.