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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 Boise, ID (BOI), 00Z. Its levels are in the table below.
Observed Sounding at Boise, ID (BOI), for (4 h 30 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 (53)
Boise, ID (BOI): the surface first, then up through the atmosphere. Temperature and dew point in °C, as measured.
PressureHeightTemperatureDew pointWind
925 mb874 m24.6-3.4170° 12 kt
911 mb1007 m22.4-3.6—
889 mb1219 m20.4-4.2160° 17 kt
850 mb1605 m16.8-5.2155° 16 kt
828 mb1829 m15.0-5.8145° 16 kt
814 mb1971 m13.8-6.2—
798 mb2134 m12.9-5.6115° 18 kt
770 mb2438 m11.4-16.8135° 17 kt
748 mb2678 m10.0-24.0—
729 mb2891 m9.2-19.8—
715 mb3048 m9.8-28.4200° 24 kt
700 mb3227 m9.0-29.0190° 22 kt
689 mb3353 m8.5-29.8190° 23 kt
664 mb3658 m7.2-31.6215° 17 kt
653 mb3799 m6.6-32.4—
616 mb4267 m3.5-32.8225° 19 kt
593 mb4572 m1.4-33.0225° 17 kt
571 mb4877 m-0.6-33.3240° 15 kt
552 mb5154 m-2.5-33.5—
540 mb5328 m-3.5-27.5—
529 mb5486 m-4.9-27.3250° 12 kt
515 mb5700 m-6.9-26.9—
500 mb5930 m-8.9-29.9230° 13 kt
489 mb6096 m-9.6-40.0225° 12 kt
469 mb6421 m-12.1-45.1—
438 mb6938 m-16.7-46.7—
426 mb7145 m-18.7-39.7—
414 mb7357 m-19.7-48.7—
400 mb7610 m-22.1-49.1230° 9 kt
390 mb7796 m-23.3-54.3—
352 mb8534 m-29.1-59.2275° 11 kt
337 mb8839 m-31.7-60.0270° 11 kt
323 mb9144 m-34.5-59.8285° 12 kt
312 mb9389 m-36.7-59.7—
300 mb9660 m-39.1-52.1265° 12 kt
289 mb9915 m-41.1-54.1—
278 mb10179 m-42.9-57.9—
264 mb10526 m-44.7-54.7—
252 mb10837 m-46.5-64.5—
250 mb10890 m-46.7-64.7265° 20 kt
240 mb11159 m-48.9-58.9—
227 mb11521 m-51.9-54.8—
209 mb12050 m-55.3-60.3—
200 mb12330 m-56.5-62.5260° 25 kt
184 mb12854 m-59.1-66.1—
168 mb13411 m-60.8-71.8270° 28 kt
152 mb14021 m-62.0-77.9265° 33 kt
150 mb14120 m-62.5-80.5260° 32 kt
138 mb14630 m-65.7-83.4255° 35 kt
125 mb15228 m-67.7-83.7260° 30 kt
113 mb15835 m-68.5-85.5—
102 mb16459 m-68.5-87.7265° 17 kt
100 mb16570 m-69.1-88.1225° 28 kt
Every station with a sounding (78)

SPC observed soundings checked · Data: NOAA/SPC

California 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.